subject:(Spray cooling)

1. Pelissari, Julio Rafael. Efeito da encapsulação de licopeno na sua estabilidade e biodisponibilidade.

Degree: Mestrado, Ciências da Engenharia de Alimentos, 2014, University of São Paulo

URL: http://www.teses.usp.br/teses/disponiveis/74/74132/tde-26092014-090346/ ;

► Licopeno, um pigmento natural considerado o mais potente antioxidante dentre os carotenoides, é oque tem maior incidência no soro humano. Seu consumo regular está relacionado… (more)

▼ Licopeno, um pigmento natural considerado o mais potente antioxidante dentre os carotenoides, é oque tem maior incidência no soro humano. Seu consumo regular está relacionado principalmente com a prevenção do câncer de próstata. Porém, estudos também demonstram sua relação com a prevenção de câncer de pâncreas e bexiga, doenças cardiovasculares como a aterosclerose e doenças neurodegenerativas. Todavia, por ser altamente insaturado o licopeno é susceptível à degradação, sendo degradado na presença de luz, oxigênio e se exposto a altas temperaturas. A microencapsulação entra como uma alternativa para tentar garantir maior estabilidade a este carotenoide. A técnica de spray-chilling, por dispensar o emprego de altas temperaturas e solventes durante o processo de atomização, representa uma alternativa promissora na encapsulação do licopeno. Os objetivos deste trabalho foram encapsular uma solução oleosa de licopeno (10%) através da técnica de spray-chilling,utilizando gordura vegetal low trans como carreador, caracterizar as micropartículas obtidas e avaliar a biodisponibilidade do licopeno livre e encapsulado em ratos wistars. Foram formulados seis tratamentos, que diferiam pela concentração de solução comercial de licopeno, sendo T1 com 20%, T2 com 23,1%, T3 com 28,6%, T4 com 33,3%, T5 com 17,9% mais 10% de goma arábica e T6 com 19,2% mais 5% de carboximetilcelulose (CMC). As micropartículas obtidas destes tratamentos foram avaliadas quanto a tamanho e distribuição, morfologia por microscopia eletrônica de varredura (MEV), espectroscopia de infravermelho com transformadas de Fourier (FT-IR), difração de raios-X (DRX). A estabilidade do licopeno encapsulado foi avaliada em diferentes condições de armazenamento (sob vácuo, umidade relativa de 33%, temperatura de refrigeração e ambiente) e também foi determinada por meio de quantificações periódicas de licopeno, bem como através da análise análise da cor instrumental. A biodisponibilidade foi avaliada utilizando-se 68 animais divididos em grupos, para os quais se administrou por gavagem o licopeno livre e o encapsulado. O tamanho das micropartículas obtidas ficou em torno de 60-110 µm e a distribuição foi polidispersa, independente da concentração de licopeno. A microscopia revelou micropartículas esféricas, com superfície rugosa, com alguns poros e tamanhos variados. No FT-IR verificou-se que não houve formação de ligações distintas na solução oleosa de licopeno e nas amostras atomizadas. Nos difratogramas observou-se a presença da forma polimórfica β para o agente carreador e para as micropartículas. Na estabilidade a adição da goma arábica e o armazenamento sob temperatura de refrigeração e vácuo, foram as melhores condições para retardar a degradação do licopeno. Os resultados dos ensaios de biodisponibilidade foram inconclusivos. Desta forma, conclui-se que é possível encapsular licopeno através da técnica de spray-chilling, porém, para trabalhos futuros, seriam necessários aprimoramentos na técnica de encapsulação e/ou na formulação para conferir maior… Advisors/Committee Members: Fávaro-Trindade, Carmen Silvia.

Subjects/Keywords: Spray-chilling; Spray-chilling; Spray-cooling; Spray-cooling; Carotenoid; Carotenoide; Estabilidade; Microencapsulação; Microencapsulation; Stability

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Pelissari, J. R. (2014). Efeito da encapsulação de licopeno na sua estabilidade e biodisponibilidade. (Masters Thesis). University of São Paulo. Retrieved from http://www.teses.usp.br/teses/disponiveis/74/74132/tde-26092014-090346/ ;

Chicago Manual of Style (16^th Edition):

Pelissari, Julio Rafael. “Efeito da encapsulação de licopeno na sua estabilidade e biodisponibilidade.” 2014. Masters Thesis, University of São Paulo. Accessed January 18, 2021. http://www.teses.usp.br/teses/disponiveis/74/74132/tde-26092014-090346/ ;.

MLA Handbook (7^th Edition):

Pelissari, Julio Rafael. “Efeito da encapsulação de licopeno na sua estabilidade e biodisponibilidade.” 2014. Web. 18 Jan 2021.

Vancouver:

Pelissari JR. Efeito da encapsulação de licopeno na sua estabilidade e biodisponibilidade. [Internet] [Masters thesis]. University of São Paulo; 2014. [cited 2021 Jan 18]. Available from: http://www.teses.usp.br/teses/disponiveis/74/74132/tde-26092014-090346/ ;.

Council of Science Editors:

Pelissari JR. Efeito da encapsulação de licopeno na sua estabilidade e biodisponibilidade. [Masters Thesis]. University of São Paulo; 2014. Available from: http://www.teses.usp.br/teses/disponiveis/74/74132/tde-26092014-090346/ ;

2. Oliveira, Daniela Lara Pedroso de. Produção e avaliação de micropartículas lipídicas contendo Lactobacillus acidophilus ou Bifidobacterium lactis produzidas por spray chiling.

Degree: Mestrado, Ciências da Engenharia de Alimentos, 2011, University of São Paulo

URL: http://www.teses.usp.br/teses/disponiveis/74/74132/tde-17112011-101818/ ;

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Lactobacillus acidophilus e Bifidobacterium lactis são microrganismos probióticos frequentemente utilizados em alimentos funcionais. No entanto, estes microrganismos devem resistir ao processamento, à estocagem do alimento,… (more)

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Lactobacillus acidophilus e Bifidobacterium lactis são microrganismos probióticos frequentemente utilizados em alimentos funcionais. No entanto, estes microrganismos devem resistir ao processamento, à estocagem do alimento, e sobreviver à passagem pelo trato-gastrointestinal, para chegarem ativos ao intestino e exercerem seus efeitos benéficos. Uma vez que os probióticos são sensíveis a uma série de fatores, tais como meio ácido, sais biliares e presença de oxigênio, a microencapsulação tem sido estudada com objetivo de protegê-los aos efeitos adversos do ambiente, além de promover a liberação controlada no local de ação do microrganismo, melhorando sua eficiência. Este trabalho teve como objetivo a produção e avaliação de micropartículas lipídicas contendo B. lactis ou L. acidophilus, produzidas por spray chilling, utilizando gorduras de baixo ponto de fusão, tais como gordura de palma e manteiga de cacau, como agente encapsulante. O diâmetro médio e a morfologia das partículas foram avaliados. Ensaios de sobrevivência foram conduzidos com objetivo de avaliar a resistência dos microrganismos ao processo encapsulação, resistência in vitro aos fluidos gástrico e intestinal simulados e estabilidade das células durante 90 dias de armazenamento a -18, 7 e 20 ou 37°C, dependendo da gordura utilizada. As micropartículasapresentaram-se em formato esféricoe com diâmetro médio que pode permitir o fácil escoamento no alimento, sem proporcionar impacto tecnológico negativo.A tecnologia de encapsulação por spray chilling, utilizando gordura de palma e manteiga de cacau, como agentes encapsulantes, proporcionou a obtenção de micropartículas eficientes na proteção dos probióticos frente ao processo de encapsulação e na manutenção da estabilidade das células quando estocados sob congelamento. Entretanto, aeficiência das micropartículas frente aos fluidos gastrointestinais e a estabilidade das células quando estocadas a 7 e 20 ou 37°C variaram de acordo com a gordura utilizada e com o microrganismo encapsulado. As micropartículas lipídicas obtidas são, portanto, uma matriz inovadora para a aplicação de probióticos, de baixo custo e com grande possibilidade de obtenção em escala industrial. O desafio futuro para o presente estudo é a seleção de um agente encapsulante que aumente a estabilidade das células, nas temperaturas ambiente e de refrigeração, a fim de aumentar as possibilidades de aplicação destas microcápsulas em produtos alimentícios.

L. acidophilus and Bifidobacterium lactis are probiotic microorganisms frequently used in food product. However they must remain viable during processing, entire shelf life of product and passing-through the gastrointestinal tract to provide beneficial effects on human health. Since theses microorganisms are sensitive to a series of factors, especially presence of oxygen and acid medium, microencapsulation has been studied as an alternative to increase probiotic cells viability and to provide the controlled release in the site of action, improving their efficiency. The aim of this study was…

Advisors/Committee Members: Fávaro-Trindade, Carmen Silvia.

Subjects/Keywords: Spray cooling; Encapsulação; Encapsulation; Probióticos; Probiotics; Spray cooling; Viabilidade; Viability

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APA (6^th Edition):

Oliveira, D. L. P. d. (2011). Produção e avaliação de micropartículas lipídicas contendo Lactobacillus acidophilus ou Bifidobacterium lactis produzidas por spray chiling. (Masters Thesis). University of São Paulo. Retrieved from http://www.teses.usp.br/teses/disponiveis/74/74132/tde-17112011-101818/ ;

Chicago Manual of Style (16^th Edition):

Oliveira, Daniela Lara Pedroso de. “Produção e avaliação de micropartículas lipídicas contendo Lactobacillus acidophilus ou Bifidobacterium lactis produzidas por spray chiling.” 2011. Masters Thesis, University of São Paulo. Accessed January 18, 2021. http://www.teses.usp.br/teses/disponiveis/74/74132/tde-17112011-101818/ ;.

MLA Handbook (7^th Edition):

Oliveira, Daniela Lara Pedroso de. “Produção e avaliação de micropartículas lipídicas contendo Lactobacillus acidophilus ou Bifidobacterium lactis produzidas por spray chiling.” 2011. Web. 18 Jan 2021.

Vancouver:

Oliveira DLPd. Produção e avaliação de micropartículas lipídicas contendo Lactobacillus acidophilus ou Bifidobacterium lactis produzidas por spray chiling. [Internet] [Masters thesis]. University of São Paulo; 2011. [cited 2021 Jan 18]. Available from: http://www.teses.usp.br/teses/disponiveis/74/74132/tde-17112011-101818/ ;.

Council of Science Editors:

Oliveira DLPd. Produção e avaliação de micropartículas lipídicas contendo Lactobacillus acidophilus ou Bifidobacterium lactis produzidas por spray chiling. [Masters Thesis]. University of São Paulo; 2011. Available from: http://www.teses.usp.br/teses/disponiveis/74/74132/tde-17112011-101818/ ;

3. Gavory, Cécile. Microencapsulation d’un adhésif sensible à la pression par des procédés d’atomisation : Microencapsulation of a pressure sensitive adhesive by methods based on atomization.

Degree: Docteur es, Chimie. Procédés, 2012, Université Claude Bernard – Lyon I

URL: http://www.theses.fr/2012LYO10189

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L'objectif de ce travail de thèse consiste en l'étude de l'encapsulation, par des procédés d'atomisation, d'un adhésif sensible à la pression se présentant sous la… (more)

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L'objectif de ce travail de thèse consiste en l'étude de l'encapsulation, par des procédés d'atomisation, d'un adhésif sensible à la pression se présentant sous la forme d'une émulsion aqueuse. Des microparticules de diamètres moyens inférieurs à 50 μm et à base d'éthylcellulose plastifiée ont été élaborées par spray-drying ; la proportion d'adhésif incorporé a pu atteindre 25% en masse. L'encapsulation a également été réalisée par spraycooling avec des matières d'enrobage fusibles, notamment avec une huile de palme totalement hydrogénée. Un plan de criblage a été réalisé et a permis d'identifier des conditions optimales avec 50% d'adhésif et 2% d'un tensioactif lipophile : des tailles équivalentes aux précédentes et une adhésion maximale de l'ordre de 6 N après rupture des particules ont été obtenues. Le polymorphisme relatif aux matières grasses a été mis en évidence et des analyses couplées ont permis de mettre au point un traitement thermique adéquat pour s'en affranchir. Des tests de résistance mécaniques de microparticules unitaires de diamètres inférieures à 20 μm ont été menés et ont montré pour les deux types de particules des niveaux de forces de rupture de quelques centaines de micronewtons et une relation quasi linéaire entre ces forces et les tailles de particules

The aim of this work was to microencapsulate a water-based pressure sensitive adhesive by mechanical methods based on atomization. Microparticles having a mean diameter inferior to 50 μm have been produced by spray-drying with a wall material made up of plastified ethylcellulose; the proportion of adhesive incorporated reached 25% w/w. Besides, the microencapsulation of the adhesive was achieved by spray-cooling with fusible wall materials. A totally hydrogenated palm oil was especially selected. An experimental screening design was carried out: optimal formulation conditions were identified, namely 50% adhesive and 2% of a lipophilic emulsifier. Mean diameter size of the microparticles collected was equivalent to the spray-dried one and their adhesive forces reached 6 N after crushing. Polymorphism inherent in fats subjected to quenching was brought to light and coupled analyses enabled to set an appropriate thermal treatment to overcome it. Mechanical tests performed on unitary microparticles having diameters inferior to 20 μm and elaborated by both spray methods revealed that the order of magnitude of the crushing forces was about few hundreds micronewtons and the forces raised almost linearly with the particles size

Advisors/Committee Members: Fessi, Hatem (thesis director).

Subjects/Keywords: Microencapsulation; Adhésif; Spray-drying; Spray-cooling; Résistance mécanique; Microencapsulation; Adhesive; Spray-drying; Spray-cooling; Strength; 660.2

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APA (6^th Edition):

Gavory, C. (2012). Microencapsulation d’un adhésif sensible à la pression par des procédés d’atomisation : Microencapsulation of a pressure sensitive adhesive by methods based on atomization. (Doctoral Dissertation). Université Claude Bernard – Lyon I. Retrieved from http://www.theses.fr/2012LYO10189

Chicago Manual of Style (16^th Edition):

Gavory, Cécile. “Microencapsulation d’un adhésif sensible à la pression par des procédés d’atomisation : Microencapsulation of a pressure sensitive adhesive by methods based on atomization.” 2012. Doctoral Dissertation, Université Claude Bernard – Lyon I. Accessed January 18, 2021. http://www.theses.fr/2012LYO10189.

MLA Handbook (7^th Edition):

Gavory, Cécile. “Microencapsulation d’un adhésif sensible à la pression par des procédés d’atomisation : Microencapsulation of a pressure sensitive adhesive by methods based on atomization.” 2012. Web. 18 Jan 2021.

Vancouver:

Gavory C. Microencapsulation d’un adhésif sensible à la pression par des procédés d’atomisation : Microencapsulation of a pressure sensitive adhesive by methods based on atomization. [Internet] [Doctoral dissertation]. Université Claude Bernard – Lyon I; 2012. [cited 2021 Jan 18]. Available from: http://www.theses.fr/2012LYO10189.

Council of Science Editors:

Gavory C. Microencapsulation d’un adhésif sensible à la pression par des procédés d’atomisation : Microencapsulation of a pressure sensitive adhesive by methods based on atomization. [Doctoral Dissertation]. Université Claude Bernard – Lyon I; 2012. Available from: http://www.theses.fr/2012LYO10189

Texas A&M University

4. Yang, Yuxuan. Suppression and Enhancement of Boiling Associated with Multiple Droplet Impingement.

Degree: MS, Mechanical Engineering, 2014, Texas A&M University

URL: http://hdl.handle.net/1969.1/152450

► Spray cooling has proven to be efficient in managing thermal load in high power applications. Reliability of electronic products lies on the thermal management and… (more)

▼ Spray cooling has proven to be efficient in managing thermal load in high power applications. Reliability of electronic products lies on the thermal management and understanding of heat transfer mechanisms of the most commonly used thermal management schemes such as spray cooling. Many experiments have been done to understand the heat transfer mechanisms associated with spray cooling. However, most of them have relied on comprehensive spray cooling experiments where multiple physical variables are at play simultaneously. Furthermore, experiments with single streams of droplets have not been able to elucidate the effects of the onset of boiling (ONB) during the droplet impingement process. Therefore, efforts have been undertaken to consider the effects of using three droplet streams arranged in a triangulated fashion. The effects of using triangulated multiple droplet impingements on the suppression or enhancement of boiling on heated surfaces has been investigated. Moreover, the effects of using screen laminated on the suppression of ONB during the droplet impingement process has been studied in detail. The main goal of this project is to study the effects of multiple droplet impingement on the flat heater surface in the spray cooling with and without the use of metallic screen laminates. Single and triple droplet impingement experiments have been performed to understand the droplet behavior in spray cooling systems where multiple droplets simultaneously impact a heated surface. The experiments consisted of using a stainless steel screen laminate over a sample surface to observe the suppression or enhancement of pool boiling which tends to occur at the periphery of each droplet impingement zone. An infrared-based imaging technique was used to measure surface temperature during droplet impingement. The heat transfer performance has been evaluated in terms of heat flux, droplet frequency and volume flow rate. The results indicate that droplet stream spacing and the use of copper meshes can enhance surface cooling significantly. Specifically, droplet stream spacing of 1000 µm with copper meshes with a 6 mm hole and gap of 0.2 mm lead to enhanced surface cooling during the multiple droplet impingement process. It is expected that the results and conclusions of this study will be useful in understanding the physics of spray cooling which should help design better spray cooling system. Advisors/Committee Members: Alvarado, Jorge (advisor), Pate, Michael (committee member), Yassin, Hassan A. (committee member).

Subjects/Keywords: Spray Cooling; Multiple Stream Droplets; Screen Laminates

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Yang, Y. (2014). Suppression and Enhancement of Boiling Associated with Multiple Droplet Impingement. (Masters Thesis). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/152450

Chicago Manual of Style (16^th Edition):

Yang, Yuxuan. “Suppression and Enhancement of Boiling Associated with Multiple Droplet Impingement.” 2014. Masters Thesis, Texas A&M University. Accessed January 18, 2021. http://hdl.handle.net/1969.1/152450.

MLA Handbook (7^th Edition):

Yang, Yuxuan. “Suppression and Enhancement of Boiling Associated with Multiple Droplet Impingement.” 2014. Web. 18 Jan 2021.

Vancouver:

Yang Y. Suppression and Enhancement of Boiling Associated with Multiple Droplet Impingement. [Internet] [Masters thesis]. Texas A&M University; 2014. [cited 2021 Jan 18]. Available from: http://hdl.handle.net/1969.1/152450.

Council of Science Editors:

Yang Y. Suppression and Enhancement of Boiling Associated with Multiple Droplet Impingement. [Masters Thesis]. Texas A&M University; 2014. Available from: http://hdl.handle.net/1969.1/152450

University of Florida

5. Dong, Jun. An Experimental and Modeling Study of Fundamental Spray Cooling Heat Transfer for Terrestrial and In-Space Cryogenic Storage Tank Chilldown.

Degree: PhD, Mechanical Engineering - Mechanical and Aerospace Engineering, 2019, University of Florida

URL: https://ufdc.ufl.edu/UFE0054247

► The extension of human space exploration from a low earth orbit to a high earth orbit, then to Moon, Mars, and possibly asteroids and moons… (more)

Subjects/Keywords: boiling – chilldown – cryogenic – heat-transfer – spray-cooling

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APA (6^th Edition):

Dong, J. (2019). An Experimental and Modeling Study of Fundamental Spray Cooling Heat Transfer for Terrestrial and In-Space Cryogenic Storage Tank Chilldown. (Doctoral Dissertation). University of Florida. Retrieved from https://ufdc.ufl.edu/UFE0054247

Chicago Manual of Style (16^th Edition):

Dong, Jun. “An Experimental and Modeling Study of Fundamental Spray Cooling Heat Transfer for Terrestrial and In-Space Cryogenic Storage Tank Chilldown.” 2019. Doctoral Dissertation, University of Florida. Accessed January 18, 2021. https://ufdc.ufl.edu/UFE0054247.

MLA Handbook (7^th Edition):

Dong, Jun. “An Experimental and Modeling Study of Fundamental Spray Cooling Heat Transfer for Terrestrial and In-Space Cryogenic Storage Tank Chilldown.” 2019. Web. 18 Jan 2021.

Vancouver:

Dong J. An Experimental and Modeling Study of Fundamental Spray Cooling Heat Transfer for Terrestrial and In-Space Cryogenic Storage Tank Chilldown. [Internet] [Doctoral dissertation]. University of Florida; 2019. [cited 2021 Jan 18]. Available from: https://ufdc.ufl.edu/UFE0054247.

Council of Science Editors:

Dong J. An Experimental and Modeling Study of Fundamental Spray Cooling Heat Transfer for Terrestrial and In-Space Cryogenic Storage Tank Chilldown. [Doctoral Dissertation]. University of Florida; 2019. Available from: https://ufdc.ufl.edu/UFE0054247

Universidade Estadual de Campinas

6. Santos, Camilia Aoyagui dos, 1984-. Obtenção e caracterização de sementes de cristalização a base de "hardfat" adicionado de D-limoneno ou óleo de canola e aplicação em chocolate : avaliação dos efeitos tecnológicos: Production and characterization of seed crystals based on "hardfat" added with D-limonene or canola oil and application in chocolate : evaluation of technological effects.

Degree: 2018, Universidade Estadual de Campinas

URL: http://repositorio.unicamp.br/jspui/handle/REPOSIP/333789

► Abstract: Among the techniques used to promote and direct the crystallization of lipid systems are seeding. Such technique consists in the addition of crystalline lipid… (more)

▼ Abstract: Among the techniques used to promote and direct the crystallization of lipid systems are seeding. Such technique consists in the addition of crystalline lipid material (seed crystals), which acts as nucleating agent or crystalline surface for crystal growth, besides inducing specific polymorphic habit. The present study aimed to obtain ß-stable crystal seeds by "spray cooling" system, to accelerate or eliminate the pre-crystallization stage of dark chocolate. For the production of solid lipid microparticles (SLMs), a low cost industrial raw material was used - the soybean oil hardfat (HS). D-limonene (5%) or canola oil (7.5%) were added to obtain SLMs of HS in the polymorphism of higher stability, ß, which allowed to obtain SLMs with spherical geometry, mean diameters (D50) between 150 and 200 µm and ß polymorphism after only 18 hours of storage at 25°C. There was no agglomeration of SLMs during storage at 25°C for up to 30 days, monitored by scanning electron microscopy (SEM) analysis. The application of these SLMs in dark chocolate led to a 32% reduction in the time of the pre-crystallization stage, representing a gain in productivity. In the accelerated shelf-life test (20°C / 12 hours and 32°C / 12 hours), the seeding was shown not to delay or accelerate the appearance of fat bloom in chocolate. The values of D90 (diameter of 90% of the chocolate particles) of all samples were within the range considered ideal (< 35 µm) for dark chocolate. The chocolates were sensorially evaluated (acceptability test with 146 evaluators) resulting in optimum acceptability in texture, appearance, taste, aroma and overall impression attributes. Due to the results obtained, the incorporation of ß-stable crystal seeds into dark chocolate could be considered successful. The application of the crystal seeds obtained in other lipid systems can be explored, providing good study opportunities Advisors/Committee Members: UNIVERSIDADE ESTADUAL DE CAMPINAS (CRUESP), Efraim, Priscilla, 1978- (advisor), Universidade Estadual de Campinas. Faculdade de Engenharia de Alimentos (institution), Programa de Pós-Graduação em Tecnologia de Alimentos (nameofprogram), Chiu, Ming Chih (committee member), Maximo, Guilherme José (committee member), Mascarenhas, Maria Cristina Chiarinelli Nucci (committee member), Basso, Rodrigo Corrêa (committee member).

Subjects/Keywords: Micropartículas lípidicas; Cristalização; Polimorfismo; Chocolate; Spray cooling; Lipid microparticles; Crystallization; Polymorphism; Chocolate; Spray cooling

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APA (6^th Edition):

Santos, Camilia Aoyagui dos, 1. (2018). Obtenção e caracterização de sementes de cristalização a base de "hardfat" adicionado de D-limoneno ou óleo de canola e aplicação em chocolate : avaliação dos efeitos tecnológicos: Production and characterization of seed crystals based on "hardfat" added with D-limonene or canola oil and application in chocolate : evaluation of technological effects. (Thesis). Universidade Estadual de Campinas. Retrieved from http://repositorio.unicamp.br/jspui/handle/REPOSIP/333789

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Santos, Camilia Aoyagui dos, 1984-. “Obtenção e caracterização de sementes de cristalização a base de "hardfat" adicionado de D-limoneno ou óleo de canola e aplicação em chocolate : avaliação dos efeitos tecnológicos: Production and characterization of seed crystals based on "hardfat" added with D-limonene or canola oil and application in chocolate : evaluation of technological effects.” 2018. Thesis, Universidade Estadual de Campinas. Accessed January 18, 2021. http://repositorio.unicamp.br/jspui/handle/REPOSIP/333789.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Santos, Camilia Aoyagui dos, 1984-. “Obtenção e caracterização de sementes de cristalização a base de "hardfat" adicionado de D-limoneno ou óleo de canola e aplicação em chocolate : avaliação dos efeitos tecnológicos: Production and characterization of seed crystals based on "hardfat" added with D-limonene or canola oil and application in chocolate : evaluation of technological effects.” 2018. Web. 18 Jan 2021.

Vancouver:

Santos, Camilia Aoyagui dos 1. Obtenção e caracterização de sementes de cristalização a base de "hardfat" adicionado de D-limoneno ou óleo de canola e aplicação em chocolate : avaliação dos efeitos tecnológicos: Production and characterization of seed crystals based on "hardfat" added with D-limonene or canola oil and application in chocolate : evaluation of technological effects. [Internet] [Thesis]. Universidade Estadual de Campinas; 2018. [cited 2021 Jan 18]. Available from: http://repositorio.unicamp.br/jspui/handle/REPOSIP/333789.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Santos, Camilia Aoyagui dos 1. Obtenção e caracterização de sementes de cristalização a base de "hardfat" adicionado de D-limoneno ou óleo de canola e aplicação em chocolate : avaliação dos efeitos tecnológicos: Production and characterization of seed crystals based on "hardfat" added with D-limonene or canola oil and application in chocolate : evaluation of technological effects. [Thesis]. Universidade Estadual de Campinas; 2018. Available from: http://repositorio.unicamp.br/jspui/handle/REPOSIP/333789

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

NSYSU

7. Chen, Jia-Wei. Characterization of Water Spray Temperature Distribution and Liquid Film Growth Processes.

Degree: Master, Mechanical and Electro-Mechanical Engineering, 2011, NSYSU

URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0907111-155440

► The aim of this study was to explore the properties of thermal field in spray cooling via experiments. The nozzle diameter (dj) used herein was… (more)

Subjects/Keywords: spray cooling; Î¼LIF; spray; liquid film thickness; droplets

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Chen, J. (2011). Characterization of Water Spray Temperature Distribution and Liquid Film Growth Processes. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0907111-155440

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Chen, Jia-Wei. “Characterization of Water Spray Temperature Distribution and Liquid Film Growth Processes.” 2011. Thesis, NSYSU. Accessed January 18, 2021. http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0907111-155440.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Chen, Jia-Wei. “Characterization of Water Spray Temperature Distribution and Liquid Film Growth Processes.” 2011. Web. 18 Jan 2021.

Vancouver:

Chen J. Characterization of Water Spray Temperature Distribution and Liquid Film Growth Processes. [Internet] [Thesis]. NSYSU; 2011. [cited 2021 Jan 18]. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0907111-155440.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Chen J. Characterization of Water Spray Temperature Distribution and Liquid Film Growth Processes. [Thesis]. NSYSU; 2011. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0907111-155440

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Stellenbosch University

8. Roux, Daniel. Evaluation and performance enhancement of cooling tower spray zones.

Degree: MScEng, Mechanical and Mechatronic Engineering, 2012, Stellenbosch University

URL: http://hdl.handle.net/10019.1/71944

►

ENGLISH ABSTRACT: The performance of wet cooling towers can be improved by installing spray nozzles that distribute the cooling water uniformly onto the fill whilst… (more)

▼

ENGLISH ABSTRACT: The performance of wet cooling towers can be improved by installing spray nozzles that distribute the cooling water uniformly onto the fill whilst operating at a low pressure head. In this thesis, three commercial spray nozzles are experimentally evaluated in terms of flow and pressure loss characteristics as well as water distribution patterns. The results of the evaluation process highlight the need for spray nozzles with enhanced performance characteristics. The theory required to implement the results of the evaluation process in the design of a cooling tower is presented and discussed. A systematic approach to enhance the performance of a spray nozzle through minor alterations is applied to one of the commercial spray nozzles that was evaluated. The fluid dynamics of an orifice nozzle, such as the effect of a change in pressure head, spray angle, spray height, orifice diameter and wall thickness on drop diameter and spray distance, is experimentally investigated and a model with which a spray nozzle can be designed is finally presented. Two prototype spray nozzles show that it is possible to enhance the performance of spray nozzles and thus wet cooling towers by means of the methods presented.

AFRIKAANSE OPSOMMING: Die werkverrigting van natkoeltorings kan verbeter word deur sproeiers te installeer wat die verkoelingswater uniform versprei op die pakking teen 'n lae pomp drukhoogte. In hierdie tesis word drie kommersiële sproeiers eksperimenteel geëvalueer in terme van vloei en drukverlies eienskappe sowel as water verdelings patrone. Die resultate van die evaluasie proses beklemtoon die behoefte aan sproeiers met verbeterde werkverrigtingseienskappe. Die teorie wat benodig word om die resultate van die evaluasie proses te implementeer in die ontwerp van 'n natkoeltoring word bespreek. 'n Stelselmatige benadering om die werkverrigtings van 'n sproeier te verhoog deur klein veranderinge aan die ontwerp aan te bring, word toegepas op een van die sproeiers wat getoets is. Die vloeidinamika van 'n plaatmondstuk, soos die effek van 'n verandering in drukhoogte, sproeihoek, sproeihoogte, gatdiameter en wanddikte op druppel diameter en sproeiafstand, is eksperimenteel ondersoek en 'n model word aangebied waarmee 'n sproeier ontwerp kan word. Twee prototipe sproeiers wys dat dit moontlik is om die werkverrigting van sproeiers, en dus ook natkoeltorings, te verbeter deur die metodes wat in die tesis aangebied word, toe te pas.

Advisors/Committee Members: Reuter, H. C. R., Stellenbosch University. Faculty of Engineering. Dept. of Mechanical and Mechatronic Engineering..

Subjects/Keywords: Water distribution; Spray patterns; Cooling towers; Spray nozzles; Mechanical & Mechatronic Engineering

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Roux, D. (2012). Evaluation and performance enhancement of cooling tower spray zones. (Masters Thesis). Stellenbosch University. Retrieved from http://hdl.handle.net/10019.1/71944

Chicago Manual of Style (16^th Edition):

Roux, Daniel. “Evaluation and performance enhancement of cooling tower spray zones.” 2012. Masters Thesis, Stellenbosch University. Accessed January 18, 2021. http://hdl.handle.net/10019.1/71944.

MLA Handbook (7^th Edition):

Roux, Daniel. “Evaluation and performance enhancement of cooling tower spray zones.” 2012. Web. 18 Jan 2021.

Vancouver:

Roux D. Evaluation and performance enhancement of cooling tower spray zones. [Internet] [Masters thesis]. Stellenbosch University; 2012. [cited 2021 Jan 18]. Available from: http://hdl.handle.net/10019.1/71944.

Council of Science Editors:

Roux D. Evaluation and performance enhancement of cooling tower spray zones. [Masters Thesis]. Stellenbosch University; 2012. Available from: http://hdl.handle.net/10019.1/71944

NSYSU

9. Liu, Hao-hsiang. Spray Heat Transfer with Different Nanofluids.

Degree: Master, Mechanical and Electro-Mechanical Engineering, 2015, NSYSU

URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0621115-133426

► This study aims to establish a spray cooling system with nanofluids and investigate its heat transfer performance. In previous study of spray cooling, nozzle diameter… (more)

Subjects/Keywords: nanofluid; spray cooling; cooling curve; boiling curve; critical heat flux

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Liu, H. (2015). Spray Heat Transfer with Different Nanofluids. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0621115-133426

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Liu, Hao-hsiang. “Spray Heat Transfer with Different Nanofluids.” 2015. Thesis, NSYSU. Accessed January 18, 2021. http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0621115-133426.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Liu, Hao-hsiang. “Spray Heat Transfer with Different Nanofluids.” 2015. Web. 18 Jan 2021.

Vancouver:

Liu H. Spray Heat Transfer with Different Nanofluids. [Internet] [Thesis]. NSYSU; 2015. [cited 2021 Jan 18]. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0621115-133426.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Liu H. Spray Heat Transfer with Different Nanofluids. [Thesis]. NSYSU; 2015. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0621115-133426

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Maryland

10. Popli, Sahil. Performance enhancement of heat exchanger coolers with evaporative cooling.

Degree: Mechanical Engineering, 2014, University of Maryland

URL: http://hdl.handle.net/1903/15957

► Air or water cooled heat exchangers (HX) are typically utilized as condensers or coolers for air-conditioning, refrigeration or process cooling applications in both commercial and… (more)

Subjects/Keywords: Mechanical engineering; Energy; Theoretical mathematics; deluge cooling; evaporative cooling; spray cooling; wavy fin heat exchanger

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APA (6^th Edition):

Popli, S. (2014). Performance enhancement of heat exchanger coolers with evaporative cooling. (Thesis). University of Maryland. Retrieved from http://hdl.handle.net/1903/15957

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Popli, Sahil. “Performance enhancement of heat exchanger coolers with evaporative cooling.” 2014. Thesis, University of Maryland. Accessed January 18, 2021. http://hdl.handle.net/1903/15957.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Popli, Sahil. “Performance enhancement of heat exchanger coolers with evaporative cooling.” 2014. Web. 18 Jan 2021.

Vancouver:

Popli S. Performance enhancement of heat exchanger coolers with evaporative cooling. [Internet] [Thesis]. University of Maryland; 2014. [cited 2021 Jan 18]. Available from: http://hdl.handle.net/1903/15957.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Popli S. Performance enhancement of heat exchanger coolers with evaporative cooling. [Thesis]. University of Maryland; 2014. Available from: http://hdl.handle.net/1903/15957

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Universidade Estadual de Campinas

11. Pilarski, Emmanuelle, 1979-. Obtenção de micropartículas lipídicas contendo bicarbonato de sódio por spray cooling e de bicarbonato de sódio aglomerado por melt agglomeration em leito vibrofluidizado: The obtaining of lipid microparticles containing sodium bicarbonate by spray cooling and the obtaining of sodium bicarbonate agglomerated by melt agglomeration in vibrofluidized bed.

Degree: 2012, Universidade Estadual de Campinas

URL: http://repositorio.unicamp.br/jspui/handle/REPOSIP/256349

► Abstract: This work had the objective of developing: (i) lipid microparticles containing sodium bicarbonate obtained by spray cooling process, and (ii) sodium bicarbonate agglomeration, obtained… (more)

▼ Abstract: This work had the objective of developing: (i) lipid microparticles containing sodium bicarbonate obtained by spray cooling process, and (ii) sodium bicarbonate agglomeration, obtained by melt agglomeration process in a vibrofluidized bed. These technologies were applied with the objective of improving the material stability, since it decomposes in the presence of humidity and/or higher temperatures. A lipid mixture composed of 57.5 % fully hydrogenated palm fat and 42.5 % refined palm oil, whose melting point is 55 ºC, was used. In the spray cooling process, a Central Composite Rotatable Design (CCRD) was applied, with 11 trials for each of the three nozzle atomizer diameters (?) studied (??= 1.0, 1.2 and 1.5 mm). Thirty three experiments were conducted with the objective of evaluating inlet temperature on the dispersion (65 to 85 ºC) and pressure atomization (1.0 to 2.0 kgf/cm2) on the following dependent variables: (i) microencapsulation efficiency (% CO2), (ii) amount of sodium bicarbonate on the surface (% CO2) and (iii) yield (%). The microparticles presented spherical shape and irregular surface. Statistical analysis showed that for ??= 1.0 mm and increases in levels of temperature on the dispersion and pressure atomization, the microencapsulation efficiency dropped. For ??= 1.2 mm, an increase in temperature on the dispersion led to an improvement in this response, however, when pressure atomization was increased, the microencapsulation efficiency fell. For ??= 1.5 mm, these two variables presented smaller effects, on the other hand, an increase in pressure atomization favored the microencapsulation efficiency. Increasing temperature on the dispersion, reduced the microencapsulation efficiency. Temperature on the dispersion presented a positive effect on yield for ??= 1.0 mm (this had no effect on the response for 1.2 and 1.5 mm diameters), while pressure atomization had a positive effect for d = 1.0 and 1.5 mm (linear term), its quadratic term had a negative effect on yield. By combining of dependent variables, it was found for ??= 1.5 mm, test 4, higher temperature on the dispersion and pressure atomization, presented the best performance (3.18 % higher efficiency, 0.17 % lower amount of surface sodium bicarbonate pressure and 80.0 % yield) when compared with the other diameters. In the vibrofluidized bed process, a CCRD was conducted, totaling 17 trials, to assess the effect of these independent variables: (i) atomization pressure (5.0 to 15.0 Psig), (ii) vibration frequency (186 to 354 rpm) and (iii) vibration amplitude (0.40 to 2.00 cm) on the dependent variables: (i) yield (%), (ii) agglomeration efficiency (% CO2), for the particle size fractions of 300, 600 and 840 µm (iii) particle growth (%) and (iv) lump. The agglomerated material presented ample size distribution and the nucleation mechanism occurred by immersion. The agglomeration efficiency presented different values for each fractions tested (300 µm <600 µm <840 µm). However, a comparison of agglomeration efficiency and particle… Advisors/Committee Members: UNIVERSIDADE ESTADUAL DE CAMPINAS (CRUESP), Collares-Queiroz, Fernanda Paula, 1966- (advisor), Queiroz, Fernanda Paula Collares (advisor), Rocha, Sandra Cristina dos Santos, 1957- (coadvisor), Universidade Estadual de Campinas. Faculdade de Engenharia de Alimentos (institution), Programa de Pós-Graduação em Tecnologia de Alimentos (nameofprogram), Grosso, Carlos Raimundo Ferreira (committee member), Nabeshima, Elizabeth Harumi (committee member), Alvim, Izabel Dutra (committee member), Grimaldi, Renato (committee member).

Subjects/Keywords: Bicarbonato de sódio; Microencapsulação; Spray cooling; Leito fluidizado; Aglomeração; Sodium bicarbonate; Microencapsulation; Spray cooling; Fluidized bed; Melt agglomeration

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Pilarski, Emmanuelle, 1. (2012). Obtenção de micropartículas lipídicas contendo bicarbonato de sódio por spray cooling e de bicarbonato de sódio aglomerado por melt agglomeration em leito vibrofluidizado: The obtaining of lipid microparticles containing sodium bicarbonate by spray cooling and the obtaining of sodium bicarbonate agglomerated by melt agglomeration in vibrofluidized bed. (Thesis). Universidade Estadual de Campinas. Retrieved from http://repositorio.unicamp.br/jspui/handle/REPOSIP/256349

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Pilarski, Emmanuelle, 1979-. “Obtenção de micropartículas lipídicas contendo bicarbonato de sódio por spray cooling e de bicarbonato de sódio aglomerado por melt agglomeration em leito vibrofluidizado: The obtaining of lipid microparticles containing sodium bicarbonate by spray cooling and the obtaining of sodium bicarbonate agglomerated by melt agglomeration in vibrofluidized bed.” 2012. Thesis, Universidade Estadual de Campinas. Accessed January 18, 2021. http://repositorio.unicamp.br/jspui/handle/REPOSIP/256349.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Pilarski, Emmanuelle, 1979-. “Obtenção de micropartículas lipídicas contendo bicarbonato de sódio por spray cooling e de bicarbonato de sódio aglomerado por melt agglomeration em leito vibrofluidizado: The obtaining of lipid microparticles containing sodium bicarbonate by spray cooling and the obtaining of sodium bicarbonate agglomerated by melt agglomeration in vibrofluidized bed.” 2012. Web. 18 Jan 2021.

Vancouver:

Pilarski, Emmanuelle 1. Obtenção de micropartículas lipídicas contendo bicarbonato de sódio por spray cooling e de bicarbonato de sódio aglomerado por melt agglomeration em leito vibrofluidizado: The obtaining of lipid microparticles containing sodium bicarbonate by spray cooling and the obtaining of sodium bicarbonate agglomerated by melt agglomeration in vibrofluidized bed. [Internet] [Thesis]. Universidade Estadual de Campinas; 2012. [cited 2021 Jan 18]. Available from: http://repositorio.unicamp.br/jspui/handle/REPOSIP/256349.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Pilarski, Emmanuelle 1. Obtenção de micropartículas lipídicas contendo bicarbonato de sódio por spray cooling e de bicarbonato de sódio aglomerado por melt agglomeration em leito vibrofluidizado: The obtaining of lipid microparticles containing sodium bicarbonate by spray cooling and the obtaining of sodium bicarbonate agglomerated by melt agglomeration in vibrofluidized bed. [Thesis]. Universidade Estadual de Campinas; 2012. Available from: http://repositorio.unicamp.br/jspui/handle/REPOSIP/256349

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

NSYSU

12. Lin, Ming-siang. Flow/Heat Transfer Characteristics Analysis of Spray Cooling.

Degree: Master, Mechanical and Electro-Mechanical Engineering, 2016, NSYSU

URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0731116-085423

► Spray cooling has been proven to be efficient in managing high power thermal load. Due to the MEMS technology, the spray nozzle plate has been… (more)

▼ Spray cooling has been proven to be efficient in managing high power thermal load. Due to the MEMS technology, the spray nozzle plate has been reduced to minute size or even microscale with low power consumption. However, several of the key heat transfer mechanisms are still not well understood. The main goal of this study is to observe the velocity characteristics of the spray field, droplets distribution along the downstream, the boiling/cooling curves and the cooling performance. In this study, we use a commercial PZT nozzle plate with three different nozzle diameters of dj = 7 Î¼m, 10 Î¼m and 35 Î¼m. The corresponding volumetric rate is 3.47 ml/min, 6.53 ml/min and 50 ml/min, respectively. The PZT atomizer is composed of Ni-Co alloy nozzle plate bounded to the PZT ring actuator. The approximate numbers of micro nozzles on a circular Ni-Co plate are 2288 and 1071 corresponding to dj = 7 Î¼m and 35 Î¼m, respectively. We use DI water as working fluid spraying on a copper flat heater which the target surface area is 2x2 cm2 and with a 14.5 mm thickness. The main experimental parameters are the spray height, H (30, 40, 50, 70, 90 mm), the initial temperature of the heater surface, Ts (300, 200, 100 ÂºC), and nozzle diameter, dj (7, 10, 35 Î¼m). Both a transient and steady boiling curve are obtained as well as the quenching cooling curve. The results show that the average heat transfer coefficient (HTC) and the associated critical heat flux(CHF) could be over 2W/cm-K(HTC) and 200W/cm2(CHF), respectively. Furthermore, by using micro particle image velocimetry (Î¼PIV) and Interferometric particle Imaging (IPI) systems, we could image and analyze the velocity and droplet size of the spray field. Besides, we also study the droplets dynamics to understand the droplet-surface interactions relevant to spray cooling. Advisors/Committee Members: C. J. Ho (chair), Shou-Shing Hsieh (committee member), Chao-Kuang Chen (chair), Chi-Hui Chien (committee member).

Subjects/Keywords: PZT nozzle plate; Droplet characteristics; IPI; Î¼PIV; boiling/cooling curve; Spray cooling

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Lin, M. (2016). Flow/Heat Transfer Characteristics Analysis of Spray Cooling. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0731116-085423

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Lin, Ming-siang. “Flow/Heat Transfer Characteristics Analysis of Spray Cooling.” 2016. Thesis, NSYSU. Accessed January 18, 2021. http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0731116-085423.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Lin, Ming-siang. “Flow/Heat Transfer Characteristics Analysis of Spray Cooling.” 2016. Web. 18 Jan 2021.

Vancouver:

Lin M. Flow/Heat Transfer Characteristics Analysis of Spray Cooling. [Internet] [Thesis]. NSYSU; 2016. [cited 2021 Jan 18]. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0731116-085423.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Lin M. Flow/Heat Transfer Characteristics Analysis of Spray Cooling. [Thesis]. NSYSU; 2016. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0731116-085423

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

NSYSU

13. Tsai, Huand-Hsiu. An Experimental Study of Jet Impingement and Spray Cooling.

Degree: PhD, Mechanical and Electro-Mechanical Engineering, 2006, NSYSU

URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0720106-130031

► An experimental investigation was carried out to examine the jet impingement and spray cooling. There are three parts in this study. The first part was… (more)

Subjects/Keywords: rotational; impingement cooling; CSC; spray cooling

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APA (6^th Edition):

Tsai, H. (2006). An Experimental Study of Jet Impingement and Spray Cooling. (Doctoral Dissertation). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0720106-130031

Chicago Manual of Style (16^th Edition):

Tsai, Huand-Hsiu. “An Experimental Study of Jet Impingement and Spray Cooling.” 2006. Doctoral Dissertation, NSYSU. Accessed January 18, 2021. http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0720106-130031.

MLA Handbook (7^th Edition):

Tsai, Huand-Hsiu. “An Experimental Study of Jet Impingement and Spray Cooling.” 2006. Web. 18 Jan 2021.

Vancouver:

Tsai H. An Experimental Study of Jet Impingement and Spray Cooling. [Internet] [Doctoral dissertation]. NSYSU; 2006. [cited 2021 Jan 18]. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0720106-130031.

Council of Science Editors:

Tsai H. An Experimental Study of Jet Impingement and Spray Cooling. [Doctoral Dissertation]. NSYSU; 2006. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0720106-130031

NSYSU

14. Lu, Chin-Yuan. Design and Performance Analysis of a Miniature Spray Cooling System.

Degree: Master, Mechanical and Electro-Mechanical Engineering, 2012, NSYSU

URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0827112-210757

► The aim of this study is to design and build a miniature spray cooling system, in which the manufactured and adopted chamber, pump and heat… (more)

Subjects/Keywords: Miniature spray cooling system; Nanofludics; Boiling curve; Cooling curve; Critical heat flux

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Lu, C. (2012). Design and Performance Analysis of a Miniature Spray Cooling System. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0827112-210757

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Lu, Chin-Yuan. “Design and Performance Analysis of a Miniature Spray Cooling System.” 2012. Thesis, NSYSU. Accessed January 18, 2021. http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0827112-210757.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Lu, Chin-Yuan. “Design and Performance Analysis of a Miniature Spray Cooling System.” 2012. Web. 18 Jan 2021.

Vancouver:

Lu C. Design and Performance Analysis of a Miniature Spray Cooling System. [Internet] [Thesis]. NSYSU; 2012. [cited 2021 Jan 18]. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0827112-210757.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Lu C. Design and Performance Analysis of a Miniature Spray Cooling System. [Thesis]. NSYSU; 2012. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0827112-210757

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

NSYSU

15. Yeh, Yi-Fan. Spray Cooling Thermal and Flow Characteristics for High Power Electronic Devices.

Degree: Master, Mechanical and Electro-Mechanical Engineering, 2017, NSYSU

URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0711117-201256

► The purpose of this experiment is to use the piezoelectric atomizer film as a nozzle, set up a high-power electronic devices (â¥ 100W COB LED)… (more)

Subjects/Keywords: LED cooling; Î¼PIV; Î¼IPI; High powered electronic devices; Spray cooling; Piezoelectric atomizer film

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APA (6^th Edition):

Yeh, Y. (2017). Spray Cooling Thermal and Flow Characteristics for High Power Electronic Devices. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0711117-201256

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Yeh, Yi-Fan. “Spray Cooling Thermal and Flow Characteristics for High Power Electronic Devices.” 2017. Thesis, NSYSU. Accessed January 18, 2021. http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0711117-201256.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Yeh, Yi-Fan. “Spray Cooling Thermal and Flow Characteristics for High Power Electronic Devices.” 2017. Web. 18 Jan 2021.

Vancouver:

Yeh Y. Spray Cooling Thermal and Flow Characteristics for High Power Electronic Devices. [Internet] [Thesis]. NSYSU; 2017. [cited 2021 Jan 18]. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0711117-201256.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Yeh Y. Spray Cooling Thermal and Flow Characteristics for High Power Electronic Devices. [Thesis]. NSYSU; 2017. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0711117-201256

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of North Texas

16. Yaddanapudi, Satvik Janardhan. Spray Cooling with HFC-134a and HFO-1234yf for Thermal Management of Automotive Power Electronics.

Degree: 2015, University of North Texas

URL: https://digital.library.unt.edu/ark:/67531/metadc822762/

► This study aims to experimentally investigate the spray cooling characteristics for active two-phase cooling of automotive power electronics. Tests are conducted on a small-scale, closed… (more)

Subjects/Keywords: thermal management; power electronics; spray cooling; heat transfer; Automobiles – Electronic equipment – Cooling.; Spraying.

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Yaddanapudi, S. J. (2015). Spray Cooling with HFC-134a and HFO-1234yf for Thermal Management of Automotive Power Electronics. (Thesis). University of North Texas. Retrieved from https://digital.library.unt.edu/ark:/67531/metadc822762/

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Yaddanapudi, Satvik Janardhan. “Spray Cooling with HFC-134a and HFO-1234yf for Thermal Management of Automotive Power Electronics.” 2015. Thesis, University of North Texas. Accessed January 18, 2021. https://digital.library.unt.edu/ark:/67531/metadc822762/.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Yaddanapudi, Satvik Janardhan. “Spray Cooling with HFC-134a and HFO-1234yf for Thermal Management of Automotive Power Electronics.” 2015. Web. 18 Jan 2021.

Vancouver:

Yaddanapudi SJ. Spray Cooling with HFC-134a and HFO-1234yf for Thermal Management of Automotive Power Electronics. [Internet] [Thesis]. University of North Texas; 2015. [cited 2021 Jan 18]. Available from: https://digital.library.unt.edu/ark:/67531/metadc822762/.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Yaddanapudi SJ. Spray Cooling with HFC-134a and HFO-1234yf for Thermal Management of Automotive Power Electronics. [Thesis]. University of North Texas; 2015. Available from: https://digital.library.unt.edu/ark:/67531/metadc822762/

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Queens University

17. Armitage, Grant. An Experimental and Numerical Investigation of Evaporative Spray Cooling for a 45 degree Bend near a Gas Turbine Exhaust .

Degree: Mechanical and Materials Engineering, 2014, Queens University

URL: http://hdl.handle.net/1974/8541

► The research performed in this work investigated evaporative spray cooling systems using water near a 45 degree bends in gas turbine exhaust piping systems. Both… (more)

▼ The research performed in this work investigated evaporative spray cooling systems using water near a 45 degree bends in gas turbine exhaust piping systems. Both experimental data and numerical data were generated with the goal of evaluating the ability of Fluent 6.3.26 to predict the performance of these systems for the purpose of design using only modest computational resources. Three cases were investigated in this research: single phase exhaust flow with no water injection, injecting water before the bend and injecting water after the bend. Various probes were used to measure dry bulb temperature, total pressure and water mass flux of the two phase flow at the exit of the pipe. Seven hole probes and pitot static probes were used to measure single phase flow properties. Numerical simulations were performed using mass flow boundary conditions which were generated from experimental results. A turbulence model was selected for the simulations based on comparisons of single phase simulations with experimental data and convergence ability. Using Fluent’s discrete phase model, different wall boundary conditions for the discrete phase were used in order to find the model which would best match the evaporation rates of the experimental data. Mass flux values through the exit plane of the pipe were found to be the most reliable of all the two phase data collected. Results from numerical simulations revealed the shortcomings of the available discrete phase wall boundary conditions to accurately predict the interaction of the liquid phase with the wall. Experimental results for both cases showed extensive areas of the wall which had liquid film layers running down the length of the pipe. Simulations resulted in particles either failing to impact the wall and create a liquid film, or creating a liquid film which was much smaller than the film present in experimental results. This led to 8% and 15% discrepancy in evaporation amounts between numerical and experimental results for water injection upstream and downstream of the bend respectively. Under-prediction of areas wetted with a wall film in the simulations also led to gross over predictions of wall temperature in numerical results.

Subjects/Keywords: Computational vs Experimental ; spray cooling ; exhaust bend ; gas turbine exhaust ; evaporative cooling ; CFD

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Armitage, G. (2014). An Experimental and Numerical Investigation of Evaporative Spray Cooling for a 45 degree Bend near a Gas Turbine Exhaust . (Thesis). Queens University. Retrieved from http://hdl.handle.net/1974/8541

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Armitage, Grant. “An Experimental and Numerical Investigation of Evaporative Spray Cooling for a 45 degree Bend near a Gas Turbine Exhaust .” 2014. Thesis, Queens University. Accessed January 18, 2021. http://hdl.handle.net/1974/8541.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Armitage, Grant. “An Experimental and Numerical Investigation of Evaporative Spray Cooling for a 45 degree Bend near a Gas Turbine Exhaust .” 2014. Web. 18 Jan 2021.

Vancouver:

Armitage G. An Experimental and Numerical Investigation of Evaporative Spray Cooling for a 45 degree Bend near a Gas Turbine Exhaust . [Internet] [Thesis]. Queens University; 2014. [cited 2021 Jan 18]. Available from: http://hdl.handle.net/1974/8541.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Armitage G. An Experimental and Numerical Investigation of Evaporative Spray Cooling for a 45 degree Bend near a Gas Turbine Exhaust . [Thesis]. Queens University; 2014. Available from: http://hdl.handle.net/1974/8541

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

18. Victor Figueiredo Roriz. Refrigeração evaporativa por aspersão em telhas de fibrocimento: estudo teórico e experimental.

Degree: 2007, Universidade Federal de São Carlos

URL: http://www.bdtd.ufscar.br/htdocs/tedeSimplificado//tde_busca/arquivo.php?codArquivo=1765

►

Esta pesquisa enfoca a refrigeração evaporativa por aspersão de água sobre telhas onduladas de fibrocimento, na cidade de São Carlos, SP, visando sua utilização para… (more)

▼

Esta pesquisa enfoca a refrigeração evaporativa por aspersão de água sobre telhas onduladas de fibrocimento, na cidade de São Carlos, SP, visando sua utilização para redução dos ganhos de calor em edificações. Um modelo teórico foi desenvolvido, baseado em equações clássicas da mecânica dos fluidos, aplicadas em cálculos iterativos dos fluxos de calor sobre a superfície superior da telha, considerada como superfície de controle. No desenvolvimento do trabalho, este modelo foi progressivamente ajustado a dados experimentais obtidos em uma célula de teste, exposta às condições climáticas locais, sendo monitoradas temperaturas superficiais de ambas as faces em duas telhas, uma mantida seca e outra sob aspersão intermitente de água. Os resultados da pesquisa indicaram que, apesar de ainda ser passível de aprimoramento, o modelo teórico já apresenta aproximação bastante satisfatória com os dados medidos. Aplicando-se um ajuste estatístico ao modelo proposto de cálculo iterativo dos fluxos de calor, obteve-se um coeficiente de correlação entre temperaturas medidas e estimadas de 0,999 e um desvio padrão de 0,35 C. Durante os experimentos, o fluxo médio de calor por evaporação foi de 409 W/m2. O volume médio de água evaporado foi de 0,7 l/(m.h), correspondendo a uma diferença média de temperaturas entre as telhas comparadas, para o período diurno, de 5,12 K. Frente à crescente necessidade de redução de consumo de energia, esta parece uma boa opção para redução da carga térmica dos edifícios, se comparada aos sistemas convencionais de condicionamento de ar

This research focuses the evaporative cooling by water aspersion on wavy cement fiber tiles in the city of São Carlos, SP, seeking to use it to reduce the buildings heat gains. A theoretical model was developed, based on classic equations of fluids mechanic, applied to iterative calculations of heat flows on the tile superior surface, considered as control surface. In the work development, this model was progressively adjusted to experimental data obtained in a test cell, exposed to the local climatic conditions, with the monitoring of superficial temperatures of both faces in two tiles, one maintained dry and other under intermittent aspersion of water. The research results indicated that, despite of still being susceptible to improvement, the theoretical model already presents quite satisfactory approach with the measured data. Applying a statistical adjustment to the proposed model of iterative heat flows calculation, it was obtained a correlation coefficient between measured and estimated temperatures of 0,999 and a standard deviation of 0,35 C. During the experiments, the average evaporative heat flow was 409 W/m2. Theaverage water volume evaporated was 0,7 l/(m.h), corresponding to an average difference of temperatures among the compared tiles of 5,12 K, for the daylight period. Due to the growing need of energy consumption reduction, this procedure seems to be a good option to reduce buildings thermal load, if compared to conventional air conditioning systems

Advisors/Committee Members: Maurício Roriz.

Subjects/Keywords: Conforto térmico; Refrigeração evaporativa; Arquitetura bioclimática; CONSTRUCAO CIVIL; Evaporative Cooling; Passive Cooling Systems; Bioclimatic Architecture; Evaporative Heat Flow; Water Spray Cooling

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Roriz, V. F. (2007). Refrigeração evaporativa por aspersão em telhas de fibrocimento: estudo teórico e experimental. (Thesis). Universidade Federal de São Carlos. Retrieved from http://www.bdtd.ufscar.br/htdocs/tedeSimplificado//tde_busca/arquivo.php?codArquivo=1765

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Roriz, Victor Figueiredo. “Refrigeração evaporativa por aspersão em telhas de fibrocimento: estudo teórico e experimental.” 2007. Thesis, Universidade Federal de São Carlos. Accessed January 18, 2021. http://www.bdtd.ufscar.br/htdocs/tedeSimplificado//tde_busca/arquivo.php?codArquivo=1765.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Roriz, Victor Figueiredo. “Refrigeração evaporativa por aspersão em telhas de fibrocimento: estudo teórico e experimental.” 2007. Web. 18 Jan 2021.

Vancouver:

Roriz VF. Refrigeração evaporativa por aspersão em telhas de fibrocimento: estudo teórico e experimental. [Internet] [Thesis]. Universidade Federal de São Carlos; 2007. [cited 2021 Jan 18]. Available from: http://www.bdtd.ufscar.br/htdocs/tedeSimplificado//tde_busca/arquivo.php?codArquivo=1765.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Roriz VF. Refrigeração evaporativa por aspersão em telhas de fibrocimento: estudo teórico e experimental. [Thesis]. Universidade Federal de São Carlos; 2007. Available from: http://www.bdtd.ufscar.br/htdocs/tedeSimplificado//tde_busca/arquivo.php?codArquivo=1765

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

NSYSU

19. Li, Yi-Fang. Analysis of Flow and Heat Transfer Characteristics of Spray Cooling with Dielectric Fluids Using Piezoelectric Atomizer.

Degree: Master, Mechanical and Electro-Mechanical Engineering, 2018, NSYSU

URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0101118-111804

► The purpose of this study is to analyze the flow and heat transfer characteristics of spray cooling with two dielectric fluids (HFE-7100 and HFE-7300) using… (more)

Subjects/Keywords: IPI; piezoelectric atomizer; dielectric fluid; Î¼PIV; Spray cooling

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Li, Y. (2018). Analysis of Flow and Heat Transfer Characteristics of Spray Cooling with Dielectric Fluids Using Piezoelectric Atomizer. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0101118-111804

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Li, Yi-Fang. “Analysis of Flow and Heat Transfer Characteristics of Spray Cooling with Dielectric Fluids Using Piezoelectric Atomizer.” 2018. Thesis, NSYSU. Accessed January 18, 2021. http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0101118-111804.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Li, Yi-Fang. “Analysis of Flow and Heat Transfer Characteristics of Spray Cooling with Dielectric Fluids Using Piezoelectric Atomizer.” 2018. Web. 18 Jan 2021.

Vancouver:

Li Y. Analysis of Flow and Heat Transfer Characteristics of Spray Cooling with Dielectric Fluids Using Piezoelectric Atomizer. [Internet] [Thesis]. NSYSU; 2018. [cited 2021 Jan 18]. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0101118-111804.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Li Y. Analysis of Flow and Heat Transfer Characteristics of Spray Cooling with Dielectric Fluids Using Piezoelectric Atomizer. [Thesis]. NSYSU; 2018. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0101118-111804

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Windsor

20. Jafari, Masoumeh. Analysis of heat transfer in spray cooling systems using numerical simulations.

Degree: MA, Mechanical, Automotive, and Materials Engineering, 2014, University of Windsor

URL: http://scholar.uwindsor.ca/etd/5028

► The impingement of sprays onto dry and wet walls and the associated heat transfer occurs in many engineering applications. These applications include internal combustion… (more)

▼ The impingement of sprays onto dry and wet walls and the associated heat transfer occurs in many engineering applications. These applications include internal combustion engines, gas turbines, spray drying, spray coating and spray cooling. The fluid dynamics and heat transfer characteristics of liquid films created by spray impingement are very complex and determining the underlying physics requires fundamental studies. In this study, an efficient and practical approach is devised for tackling many aspects of the spray cooling process. The computational fluid dynamics (CFD) methodology used here includes numerous droplets and it is designed to predict the spray-wall impact outcome based on reliable correlations. Even though it is not an exact representation of the interaction between the spray and the liquid layer due to computational considerations, it provides an acceptable picture of the transport phenomena. The STAR-CCM+ CFD code has been used to solve continuity, momentum, and energy equations coupled with a Lagrangian-Eulerian solver capable of simulating droplets as well as thin fluid film. The model is validated against relevant experimental data available in the literature and good agreement is observed for heat transfer coefficient (HTC) values for cases involving spray impact and fluid film formation over a flat solid surface. The effect of mass flux and spray Reynolds number on the spray behaviour has been studied. The model is extended to predict the cooling performance of sealed cans containing hot liquids when the cans are cooled by the impingement of spray formed from a cold liquid. The CFD results are compared with field data obtained at Heinz Canada, Leamington, ON. The effect of the can rotational speed on the cool-down behaviour is investigated. The results show that there is an optimum rotational speed beyond which the heat transfer enhancement will not be as significant. This research is the first study which solves the transport phenomena of fluid and heat outside, through and inside a sealed solid can containing a hot liquid while being cooled by the spray of a cold liquid. Advisors/Committee Members: Balachandar, Ramaswami, Barron, Ronald M..

Subjects/Keywords: Applied sciences; Heat transfer; Rotation; Spray cooling; Engineering; Mechanical Engineering

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Jafari, M. (2014). Analysis of heat transfer in spray cooling systems using numerical simulations. (Masters Thesis). University of Windsor. Retrieved from http://scholar.uwindsor.ca/etd/5028

Chicago Manual of Style (16^th Edition):

Jafari, Masoumeh. “Analysis of heat transfer in spray cooling systems using numerical simulations.” 2014. Masters Thesis, University of Windsor. Accessed January 18, 2021. http://scholar.uwindsor.ca/etd/5028.

MLA Handbook (7^th Edition):

Jafari, Masoumeh. “Analysis of heat transfer in spray cooling systems using numerical simulations.” 2014. Web. 18 Jan 2021.

Vancouver:

Jafari M. Analysis of heat transfer in spray cooling systems using numerical simulations. [Internet] [Masters thesis]. University of Windsor; 2014. [cited 2021 Jan 18]. Available from: http://scholar.uwindsor.ca/etd/5028.

Council of Science Editors:

Jafari M. Analysis of heat transfer in spray cooling systems using numerical simulations. [Masters Thesis]. University of Windsor; 2014. Available from: http://scholar.uwindsor.ca/etd/5028

NSYSU

21. Chang, Wei-Che. Thin Film Roughened Surface Effect On Spray Cooling Heat Transfer.

Degree: Master, Mechanical and Electro-Mechanical Engineering, 2017, NSYSU

URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0715117-093212

► The objective of this study was to investigate the effect of coated thin films (several nanometers thick) made from different materials on enhancing the cooling… (more)

Subjects/Keywords: Thin film surface; roughness; piezoelectric plate; spray cooling; boiling curves

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APA (6^th Edition):

Chang, W. (2017). Thin Film Roughened Surface Effect On Spray Cooling Heat Transfer. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0715117-093212

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Chang, Wei-Che. “Thin Film Roughened Surface Effect On Spray Cooling Heat Transfer.” 2017. Thesis, NSYSU. Accessed January 18, 2021. http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0715117-093212.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Chang, Wei-Che. “Thin Film Roughened Surface Effect On Spray Cooling Heat Transfer.” 2017. Web. 18 Jan 2021.

Vancouver:

Chang W. Thin Film Roughened Surface Effect On Spray Cooling Heat Transfer. [Internet] [Thesis]. NSYSU; 2017. [cited 2021 Jan 18]. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0715117-093212.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Chang W. Thin Film Roughened Surface Effect On Spray Cooling Heat Transfer. [Thesis]. NSYSU; 2017. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0715117-093212

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Universidade Estadual de Campinas

22. Lopes, Julice Dutra, 1979-. Produção e caracterização de micropartículas lipídicas, obtidas por spray cooling, para utilização como agentes de nucleação na produção de chocolates: Production and characterization of lipid microparticles, obtained by spray cooling, for use as nucleating agents in chocolate production.

Degree: 2015, Universidade Estadual de Campinas

URL: http://repositorio.unicamp.br/jspui/handle/REPOSIP/255419

► Abstract: Fats crystallization is a complex phenomenon which, when controlled, can be applied in several chemical and food industries sectors. In chocolate production, the use… (more)

▼ Abstract: Fats crystallization is a complex phenomenon which, when controlled, can be applied in several chemical and food industries sectors. In chocolate production, the use of nucleating agents can occur by the incorporation of high melting point triglycerides, melted or in solid form. The seeds can be added directly in the chocolate mass or in the cocoa butter, resulting in a large number of well-defined crystallization nuclei, which are the basis for the structural arrangement of the fat crystal network. In this way, the seeds can improve and/or accelerate the chocolate tempering step. Based on these facts, the objective of this research was to produce and to characterize solid lipid microparticles (SLM) from fully hydrogenated oils (hardfats) of palm (FHPO), cottonseed (FHCO), soybean (FHSO) and crambe (FHCrO), using the spray cooling (SC) technique in order to study the influence of the addition of these SLM as nucleating agents in dark chocolate tempering process. The SLM were produced by varying the process parameters: hardfats maintenance temperature (70 to 85 °C), SLM solidification temperature (0 to 24 °C), nozzle diameter (0.7 to 1 mm) and atomiser air pressure (1.25 to 1.75 kgf/cm2). The SLM produced presented ? polymorphism, spherical shape and mean diameter between 56.12 and 2514.32 µm, depending on the hardfats and process conditions used. The polymorphic transition kinetics of SLM stored at 25, 35 and 45 °C was investigated by 141 days evaluating the visual configuration, the thermal melting behavior and the SLM polymorphism. The full transition from SLM to polymorphism of their respective hardfats occurred more quickly at 45 °C, with full transition of SLM observed in the SLM of FHSO, FHPO and FHCO after 24 hours, without altering the visual aspect. At 35 °C, the SLM transition of FHPO and FHCO occurred after 4 days, and at 25 °C the complete transition was observed only in the SLM of FHCO. For SLM of FHCrO, ? polymorphism was predominant in the treatments at 25 and 35 °C and there was only polymorphic transition in the treatment at 45 °C after 15 days. It was observed time reduction on the tempering chocolates steps with the addition of SLM of FHSO with ? polymorphism, which showed similar rupture tension and color to the chocolate subjected to the conventional way of tempering. The results indicate that SC technique is suitable for the SLM production of the studied hardfats. However, for use of these SLM as crystallization agents is required to induce the polymorphic transition for the most stable polymorph, preferably non-static way in order to avoid the agglomerates formation Advisors/Committee Members: UNIVERSIDADE ESTADUAL DE CAMPINAS (CRUESP), Efraim, Priscilla, 1978- (advisor), Ribeiro, Ana Paula Badan, 1979- (coadvisor), Universidade Estadual de Campinas. Faculdade de Engenharia de Alimentos (institution), Programa de Pós-Graduação em Tecnologia de Alimentos (nameofprogram), Alvim, Izabela Dutra (committee member), Gandra, Kelly Moreira Bezerra (committee member), Basso, Rodrigo Corrêa (committee member), Luccas, Valdecir (committee member).

Subjects/Keywords: Chocolate; Polimorfismo; Micropartículas lípidicas; Spray cooling; Lipid microparticles; Polymorphism; Chocolate

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APA (6^th Edition):

Lopes, Julice Dutra, 1. (2015). Produção e caracterização de micropartículas lipídicas, obtidas por spray cooling, para utilização como agentes de nucleação na produção de chocolates: Production and characterization of lipid microparticles, obtained by spray cooling, for use as nucleating agents in chocolate production. (Thesis). Universidade Estadual de Campinas. Retrieved from http://repositorio.unicamp.br/jspui/handle/REPOSIP/255419

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Lopes, Julice Dutra, 1979-. “Produção e caracterização de micropartículas lipídicas, obtidas por spray cooling, para utilização como agentes de nucleação na produção de chocolates: Production and characterization of lipid microparticles, obtained by spray cooling, for use as nucleating agents in chocolate production.” 2015. Thesis, Universidade Estadual de Campinas. Accessed January 18, 2021. http://repositorio.unicamp.br/jspui/handle/REPOSIP/255419.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Lopes, Julice Dutra, 1979-. “Produção e caracterização de micropartículas lipídicas, obtidas por spray cooling, para utilização como agentes de nucleação na produção de chocolates: Production and characterization of lipid microparticles, obtained by spray cooling, for use as nucleating agents in chocolate production.” 2015. Web. 18 Jan 2021.

Vancouver:

Lopes, Julice Dutra 1. Produção e caracterização de micropartículas lipídicas, obtidas por spray cooling, para utilização como agentes de nucleação na produção de chocolates: Production and characterization of lipid microparticles, obtained by spray cooling, for use as nucleating agents in chocolate production. [Internet] [Thesis]. Universidade Estadual de Campinas; 2015. [cited 2021 Jan 18]. Available from: http://repositorio.unicamp.br/jspui/handle/REPOSIP/255419.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Lopes, Julice Dutra 1. Produção e caracterização de micropartículas lipídicas, obtidas por spray cooling, para utilização como agentes de nucleação na produção de chocolates: Production and characterization of lipid microparticles, obtained by spray cooling, for use as nucleating agents in chocolate production. [Thesis]. Universidade Estadual de Campinas; 2015. Available from: http://repositorio.unicamp.br/jspui/handle/REPOSIP/255419

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

NSYSU

23. Lin, Jhen. Analysis of Flow Field and Heat Transfer Characteristics of Spray Cooling through A Twin-fluid Nozzle.

Degree: Master, Mechanical and Electro-Mechanical Engineering, 2018, NSYSU

URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0715118-082448

► This experiment mainly discusses the twin-fluid nozzle with the diameter of 1.6 mm by changing different experimental parameters, such as the spray height (H=40 mm,… (more)

Subjects/Keywords: Twin-fluid nozzle; Spray cooling; Critical heat flux; Î¼PIV; IPI

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APA (6^th Edition):

Lin, J. (2018). Analysis of Flow Field and Heat Transfer Characteristics of Spray Cooling through A Twin-fluid Nozzle. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0715118-082448

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Lin, Jhen. “Analysis of Flow Field and Heat Transfer Characteristics of Spray Cooling through A Twin-fluid Nozzle.” 2018. Thesis, NSYSU. Accessed January 18, 2021. http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0715118-082448.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Lin, Jhen. “Analysis of Flow Field and Heat Transfer Characteristics of Spray Cooling through A Twin-fluid Nozzle.” 2018. Web. 18 Jan 2021.

Vancouver:

Lin J. Analysis of Flow Field and Heat Transfer Characteristics of Spray Cooling through A Twin-fluid Nozzle. [Internet] [Thesis]. NSYSU; 2018. [cited 2021 Jan 18]. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0715118-082448.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Lin J. Analysis of Flow Field and Heat Transfer Characteristics of Spray Cooling through A Twin-fluid Nozzle. [Thesis]. NSYSU; 2018. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0715118-082448

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Illinois – Chicago

24. Sinha Ray, Suman. Mechanics of Micro- and Nano-Textured Systems: Nanofibers, Nanochannels, Nanoparticles and Slurries.

Degree: 2012, University of Illinois – Chicago

URL: http://hdl.handle.net/10027/9610

► The first chapter of this work deals with bundles of microscopically long carbon nanochannels, which were assembled as a nanofluidic device to study bi-layer flows… (more)

▼ The first chapter of this work deals with bundles of microscopically long carbon nanochannels, which were assembled as a nanofluidic device to study bi-layer flows of n-decane and air. These experiments were accompanied and supported by theoretical considerations. The study paradoxically showed that it is possible to deliver more liquid through the nanochannels if they are partially filled with liquid in comparison to those which are completely filled with liquid. In the following chapter these nanochannels were used to produce thermoresponsive nanoparticles (~400 nm in diameter) at a very high production rate of 107 particles/sec. These nanoparticles were loaded with a low molecular weight dye to study the thermoresponsive release profile experimentally. The experiments were accompanied and guided by theoretical work. In the third part of the work, a rigorous electron microscopy revealed the 2-nm islands of thermoresponsive hydrogels nanofibers produced by electrospinning and cross-linking of electropun PNIPAM-containing nanofibers. These islands were found to be responsible for positive thermosensitivity in dye release experiments. In the following chapters meltblowing was studied both experimentally and theoretically. The role of air turbulence in this process was elucidated experimentally by blowing a solid flexible threadline in high-speed gas flow. Using this information, theoretical understanding of polymer jet/gas jet turbulent interactions was achieved and a theory of small (linearized)and large (nonlinear) bending perturbations of polymer jets was developed. This theory was extended to simulate numerically multiple polymer jets being deposited on a screen moving normally to the blowing direction. In the subsequent chapter, a novel method, solution blowing, for producing monolithic and core-shell nanofibers was developed. The core-shell fibers were also converted into hollow carbon nanotubes. The carbon nanofiber mats produced by this method were used as an electrode in a microbial fuel cell, which showed a higher current density in comparison to standard polycrystalline graphite rods. In addition, solution blowing was used to form soy-protein-containing biodegradable nanofibers. In the next chapter, a novel method of intercalating wax and butter en masse into carbon nanotubes was demonstrated. It was shown that by manipulating the intercalated solute the working temperature range of phase-change materials (PCM) can be significantly widened, while the response time reduced to minimum. In the final part of the work the elongational rheology of gypsum slurries was also studied and corroborated using the data from the corresponding shear rheological studies. It was shown that the gypsum slurries approximately follow the tensorial Ostwald-de-Waele (power law) constitutive equation. Advisors/Committee Members: Yarin, Alexander L. (advisor), Megaridis, Constantine M. (committee member), Mashayek, Farzad (committee member), Nicholls, Alan W. (committee member), Brezinsky, Kenneth (committee member).

Subjects/Keywords: Nanochannels; Nanoparticles; Nanofibers; Phase Change Materials; Spray Cooling; Gypsum Slurries.

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APA (6^th Edition):

Sinha Ray, S. (2012). Mechanics of Micro- and Nano-Textured Systems: Nanofibers, Nanochannels, Nanoparticles and Slurries. (Thesis). University of Illinois – Chicago. Retrieved from http://hdl.handle.net/10027/9610

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Sinha Ray, Suman. “Mechanics of Micro- and Nano-Textured Systems: Nanofibers, Nanochannels, Nanoparticles and Slurries.” 2012. Thesis, University of Illinois – Chicago. Accessed January 18, 2021. http://hdl.handle.net/10027/9610.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Sinha Ray, Suman. “Mechanics of Micro- and Nano-Textured Systems: Nanofibers, Nanochannels, Nanoparticles and Slurries.” 2012. Web. 18 Jan 2021.

Vancouver:

Sinha Ray S. Mechanics of Micro- and Nano-Textured Systems: Nanofibers, Nanochannels, Nanoparticles and Slurries. [Internet] [Thesis]. University of Illinois – Chicago; 2012. [cited 2021 Jan 18]. Available from: http://hdl.handle.net/10027/9610.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Sinha Ray S. Mechanics of Micro- and Nano-Textured Systems: Nanofibers, Nanochannels, Nanoparticles and Slurries. [Thesis]. University of Illinois – Chicago; 2012. Available from: http://hdl.handle.net/10027/9610

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Illinois – Urbana-Champaign

25. Zhang, Feini. Experimental study of the thermal-hydraulic performance of a brazed aluminum heat exchanger under wet-surface conditions.

Degree: MS, 0133, 2012, University of Illinois – Urbana-Champaign

URL: http://hdl.handle.net/2142/31930

► Using an open-loop wind tunnel and a full-cone water spray nuzzle, the air-side performance of a liquid-to-air heat exchanger is studied experimentally for wet-surface conditions.… (more)

Subjects/Keywords: evaporative cooling; spray; louver-fin heat exchanger; wet surface; fouling; experiment

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APA (6^th Edition):

Zhang, F. (2012). Experimental study of the thermal-hydraulic performance of a brazed aluminum heat exchanger under wet-surface conditions. (Thesis). University of Illinois – Urbana-Champaign. Retrieved from http://hdl.handle.net/2142/31930

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Zhang, Feini. “Experimental study of the thermal-hydraulic performance of a brazed aluminum heat exchanger under wet-surface conditions.” 2012. Thesis, University of Illinois – Urbana-Champaign. Accessed January 18, 2021. http://hdl.handle.net/2142/31930.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Zhang, Feini. “Experimental study of the thermal-hydraulic performance of a brazed aluminum heat exchanger under wet-surface conditions.” 2012. Web. 18 Jan 2021.

Vancouver:

Zhang F. Experimental study of the thermal-hydraulic performance of a brazed aluminum heat exchanger under wet-surface conditions. [Internet] [Thesis]. University of Illinois – Urbana-Champaign; 2012. [cited 2021 Jan 18]. Available from: http://hdl.handle.net/2142/31930.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Zhang F. Experimental study of the thermal-hydraulic performance of a brazed aluminum heat exchanger under wet-surface conditions. [Thesis]. University of Illinois – Urbana-Champaign; 2012. Available from: http://hdl.handle.net/2142/31930

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

26. Jafari, Masoumeh. Analysis of heat transfer in spray cooling systems using numerical simulations.

Degree: MA, Mechanical, Automotive, and Materials Engineering, 2014, University of Windsor

URL: https://scholar.uwindsor.ca/etd/5028

► The impingement of sprays onto dry and wet walls and the associated heat transfer occurs in many engineering applications. These applications include internal combustion… (more)

▼ The impingement of sprays onto dry and wet walls and the associated heat transfer occurs in many engineering applications. These applications include internal combustion engines, gas turbines, spray drying, spray coating and spray cooling. The fluid dynamics and heat transfer characteristics of liquid films created by spray impingement are very complex and determining the underlying physics requires fundamental studies. In this study, an efficient and practical approach is devised for tackling many aspects of the spray cooling process. The computational fluid dynamics (CFD) methodology used here includes numerous droplets and it is designed to predict the spray-wall impact outcome based on reliable correlations. Even though it is not an exact representation of the interaction between the spray and the liquid layer due to computational considerations, it provides an acceptable picture of the transport phenomena. The STAR-CCM+ CFD code has been used to solve continuity, momentum, and energy equations coupled with a Lagrangian-Eulerian solver capable of simulating droplets as well as thin fluid film. The model is validated against relevant experimental data available in the literature and good agreement is observed for heat transfer coefficient (HTC) values for cases involving spray impact and fluid film formation over a flat solid surface. The effect of mass flux and spray Reynolds number on the spray behaviour has been studied. The model is extended to predict the cooling performance of sealed cans containing hot liquids when the cans are cooled by the impingement of spray formed from a cold liquid. The CFD results are compared with field data obtained at Heinz Canada, Leamington, ON. The effect of the can rotational speed on the cool-down behaviour is investigated. The results show that there is an optimum rotational speed beyond which the heat transfer enhancement will not be as significant. This research is the first study which solves the transport phenomena of fluid and heat outside, through and inside a sealed solid can containing a hot liquid while being cooled by the spray of a cold liquid. Advisors/Committee Members: Balachandar, Ramaswami, Barron, Ronald M..

Subjects/Keywords: Applied sciences; Heat transfer; Rotation; Spray cooling; Engineering; Mechanical Engineering

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APA (6^th Edition):

Jafari, M. (2014). Analysis of heat transfer in spray cooling systems using numerical simulations. (Masters Thesis). University of Windsor. Retrieved from https://scholar.uwindsor.ca/etd/5028

Chicago Manual of Style (16^th Edition):

Jafari, Masoumeh. “Analysis of heat transfer in spray cooling systems using numerical simulations.” 2014. Masters Thesis, University of Windsor. Accessed January 18, 2021. https://scholar.uwindsor.ca/etd/5028.

MLA Handbook (7^th Edition):

Jafari, Masoumeh. “Analysis of heat transfer in spray cooling systems using numerical simulations.” 2014. Web. 18 Jan 2021.

Vancouver:

Jafari M. Analysis of heat transfer in spray cooling systems using numerical simulations. [Internet] [Masters thesis]. University of Windsor; 2014. [cited 2021 Jan 18]. Available from: https://scholar.uwindsor.ca/etd/5028.

Council of Science Editors:

Jafari M. Analysis of heat transfer in spray cooling systems using numerical simulations. [Masters Thesis]. University of Windsor; 2014. Available from: https://scholar.uwindsor.ca/etd/5028

Queens University

27. Begg, Nathon. Experimental and Computational Analysis of Evaporative Spray Cooling for Gas Turbine Exhaust Ejectors .

Degree: Mechanical and Materials Engineering, 2011, Queens University

URL: http://hdl.handle.net/1974/6517

► This research studied the effects of evaporative spray cooling on air-air ejector performance. Experimental data was collected for the purpose of validating computational simulations. This… (more)

▼ This research studied the effects of evaporative spray cooling on air-air ejector performance. Experimental data was collected for the purpose of validating computational simulations. This was done by modifying an existing air-air ejector to accommodate four spray flow nozzles which were used to atomize cooling water. The only parameter that was varied throughout the study was the mass flow rate of cooling water. One single phase (air) case and four spray flow cases where performed and analyzed. The purpose of the single phase experiment was to have a baseline for the air-air ejector performance and isolate the sources of experimental error contributed by spray flow. Three specialized multiphase flow instruments were designed and fabricated by the author to measure, gas phase temperatures, spray mass flow rates, and mixture total pressures. A computational study was performed using the collected experimental data for inlet continuous phase and spray mass flow as boundary conditions for equivalent simulations. A temperature gradient modified turbulence model was written by the author to better predict the mixing rates found experimentally which was used for the duration of this research. Secondary droplet breakup was modeled by the author using empirical correlations following preliminary simulations recognizing the deficiencies of commercially available breakup models. Comparison of experimental and computational cases produced mixed results. It was found that the experimental gas temperature instrument performed poorly for the local droplet fluxes encountered during testing. The spray sampling probe showed more promising results with two integrated mass flows agreeing within 6% of computational simulations. The total pressure probe solved the issue of pressure port clogging, but measurements were representative of mixture density which made an inferred velocity calculation difficult. It was found that evaporation of spray flow before the nozzle exit plane caused a reduction in dynamic pressure and a reduction in back pressure. A full scale simulation was performed to determine the effects of scaling on evaporative spray cooling performance. It was found that for the geometrically similar full scale model, the total droplet surface area and particle residence times scaled up with the model which increased cooling performance.

Subjects/Keywords: Evaporative ; Spray ; Ejector ; Air-Air ; Naval ; Cooling ; Droplet ; Computational ; CFD ; Analysis

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APA (6^th Edition):

Begg, N. (2011). Experimental and Computational Analysis of Evaporative Spray Cooling for Gas Turbine Exhaust Ejectors . (Thesis). Queens University. Retrieved from http://hdl.handle.net/1974/6517

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Begg, Nathon. “Experimental and Computational Analysis of Evaporative Spray Cooling for Gas Turbine Exhaust Ejectors .” 2011. Thesis, Queens University. Accessed January 18, 2021. http://hdl.handle.net/1974/6517.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Begg, Nathon. “Experimental and Computational Analysis of Evaporative Spray Cooling for Gas Turbine Exhaust Ejectors .” 2011. Web. 18 Jan 2021.

Vancouver:

Begg N. Experimental and Computational Analysis of Evaporative Spray Cooling for Gas Turbine Exhaust Ejectors . [Internet] [Thesis]. Queens University; 2011. [cited 2021 Jan 18]. Available from: http://hdl.handle.net/1974/6517.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Begg N. Experimental and Computational Analysis of Evaporative Spray Cooling for Gas Turbine Exhaust Ejectors . [Thesis]. Queens University; 2011. Available from: http://hdl.handle.net/1974/6517

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

28. Riofrío almeida, María Cristina. Etude des écoulements diphasiques pour le refroidissement des composants électroniques en systèmes embarqués : Study of two-phase flow for cooling electronic components in embedded systems.

Degree: Docteur es, Mécanique des fluides Energétique, Procédés, 2019, Université Grenoble Alpes (ComUE)

URL: http://www.theses.fr/2019GREAI022

►

Cette étude concerne l’étude des écoulements diphasiques dans le cadre du refroidissement des composants électroniques en systèmes embarqués. L’étude bibliographique a permis de sélectionner le… (more)

▼

Cette étude concerne l’étude des écoulements diphasiques dans le cadre du refroidissement des composants électroniques en systèmes embarqués. L’étude bibliographique a permis de sélectionner le refroidissement par spray comme technique prometteuse pour dissiper des flux de chaleur au-delà de 100 W/cm2. Une étude hydraulique, utilisant de l’eau et du HFE7100 comme fluides de refroidissement, nous a permis de valider des modèles permettant de déterminer la taille et la vitesse de gouttes provenant d’une sélection de buses de spray. Pour la partie thermique, nous avons conçu une section d’essais (évaporateur) permettant de pulvériser en spray afin d’étudier le refroidissement avec une boucle fermée diphasique.Vu la complexité du système de spray influencé par plusieurs paramètres et phénomènes physiques, nous avons isolé le phénomène d’ébullition nucléée dans une configuration en ébullition nucléée avec un élément chauffant identique à celui employé avec le refroidissement par spray. Pour améliorer les échanges thermiques, 6 surfaces avec différentes structurations (macroscopiques, microscopiques et hybrides) ont été sélectionnées. Les résultats de tests avec ces surfaces ont été comparés avec une surface lisse tant pour le refroidissement par spray que pour le refroidissement en vase.D’une part, avec un refroidissement par spray, les surfaces macrostructurées nous ont permis de dissiper des puissances thermiques de l’ordre de 140 W/cm2 avec d’importants coefficients de transfert thermique. D’autre part, avec un système de refroidissement par immersion, une des surfaces hybrides a montré être la plus performante.Les résultats reportés dans cette thèse ont permis d’approfondir la compréhension des mécanismes de transfert de chaleur en refroidissement par spray. De même, ils ouvrent la voie à l’étude des améliorations et optimisations du système permettant de l’employer en systèmes embarqués.

This dissertation concerns the study of two-phase flow cooling of electronic components in embedded systems. From a literature review, Spray Cooling was selected as a promising technique for dissipating heat fluxes above 100 W/cm2. A hydraulic study, using water and HFE7100 as coolants, has validate models for determining the size and speed of drops from a selection of spray nozzles. Regarding the thermal study, we have designed a test section (evaporator) to study cooling in a two-phase closed loop system.Given the complexity of Spray Cooling systems, which are influenced by several parameters and involve several physical phenomena, the nucleate boiling phenomenon has been isolated in a Pool Boling system with an identical heating element as Spray Cooling experiment. To improve heat exchange, 6 surfaces with different structures (macroscopic, microscopic and hybrid) were selected. The boiling test results with these surfaces have been compared with a smooth surface for both Spray Cooling and Pool Boiling.On one hand, in Spray Cooling tests, the macrostructured surfaces dissipated heat flux up to 140 W/cm2 with significant heat…

Advisors/Committee Members: Caney, Nadia (thesis director).

Subjects/Keywords: Écoulements diphasiques; Refroidissement composants électroniques; Composants électroniques; Spray cooling; Micro-Canaux; Two-Phase flow; Microelectronic cooling; Electronic components; Spray cooling; Microchannels; 620

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APA (6^th Edition):

Riofrío almeida, M. C. (2019). Etude des écoulements diphasiques pour le refroidissement des composants électroniques en systèmes embarqués : Study of two-phase flow for cooling electronic components in embedded systems. (Doctoral Dissertation). Université Grenoble Alpes (ComUE). Retrieved from http://www.theses.fr/2019GREAI022

Chicago Manual of Style (16^th Edition):

Riofrío almeida, María Cristina. “Etude des écoulements diphasiques pour le refroidissement des composants électroniques en systèmes embarqués : Study of two-phase flow for cooling electronic components in embedded systems.” 2019. Doctoral Dissertation, Université Grenoble Alpes (ComUE). Accessed January 18, 2021. http://www.theses.fr/2019GREAI022.

MLA Handbook (7^th Edition):

Riofrío almeida, María Cristina. “Etude des écoulements diphasiques pour le refroidissement des composants électroniques en systèmes embarqués : Study of two-phase flow for cooling electronic components in embedded systems.” 2019. Web. 18 Jan 2021.

Vancouver:

Riofrío almeida MC. Etude des écoulements diphasiques pour le refroidissement des composants électroniques en systèmes embarqués : Study of two-phase flow for cooling electronic components in embedded systems. [Internet] [Doctoral dissertation]. Université Grenoble Alpes (ComUE); 2019. [cited 2021 Jan 18]. Available from: http://www.theses.fr/2019GREAI022.

Council of Science Editors:

Riofrío almeida MC. Etude des écoulements diphasiques pour le refroidissement des composants électroniques en systèmes embarqués : Study of two-phase flow for cooling electronic components in embedded systems. [Doctoral Dissertation]. Université Grenoble Alpes (ComUE); 2019. Available from: http://www.theses.fr/2019GREAI022

Queens University

29. Wadey, Alexander. Evaporative Spray Cooling of Hot Air Flow from a Round Nozzle: Experiments and CFD .

Degree: Mechanical and Materials Engineering, Queens University

URL: http://hdl.handle.net/1974/27907

► Evaporative spray cooling is a technique that utilizes the latent heat of evaporation of a cold liquid spray to rapidly cool a hot gaseous source.… (more)

▼ Evaporative spray cooling is a technique that utilizes the latent heat of evaporation of a cold liquid spray to rapidly cool a hot gaseous source. During evaporation the liquid droplets are fixed at their boiling point, ensuring a large temperature differential between liquid and gas, and promoting high heat transfer rates. The application of note for this research is the infrared radiation (IR) suppression of naval vessel exhaust streams which have a distinctive radiative signature due to the hot carbon dioxide and water vapour within the exhaust. Cooling of the exhaust stream greatly reduces this signature and limits the possibility of tracking by hostile sources [1]. Despite extensive and historical use in fields such as fire suppression, the detailed mechanics of evaporative sprays are incredibly complex and predictive simulation of these flows has only been made possible with the rapid increase in computational power over the last two decades [2]. This research presents a dual approach in which results from optical measurements of a scale naval vessel exhaust system equipped with evaporative spray cooling are compared with the findings of multi-phase spray flow computational fluid dynamics (CFD). Spray flow experiments were run at the Grant Timmins research facility on the Hot Gas Wind Tunnel (HGWT), a rig capable of emulating a scale naval vessel exhaust system. With previous research focussing on direct spray measurement, an optical approach was undertaken utilizing a laser sheet to produce overall spray images and high-speed droplet imagery. In conjunction with experimentation a spray flow CFD study was constructed within the ANSYS suite of software tools. Given the complexity of real-world spray mechanics, simplified models form the bulk of the droplet-gas interaction within CFD and ensuring these models perform well together forms the crux of these simulations. The CFD results produced compare well with droplet velocity measurements, but spray spread and evaporation rates do not match experiment. Despite this, it is likely that a robust predictive CFD methodology may yet be created in the same software suite given further inquiry.

Subjects/Keywords: Evaporative Spray Cooling ; IR Suppression ; CFD ; Spray

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APA (6^th Edition):

Wadey, A. (n.d.). Evaporative Spray Cooling of Hot Air Flow from a Round Nozzle: Experiments and CFD . (Thesis). Queens University. Retrieved from http://hdl.handle.net/1974/27907

Note: this citation may be lacking information needed for this citation format:
No year of publication.
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Wadey, Alexander. “Evaporative Spray Cooling of Hot Air Flow from a Round Nozzle: Experiments and CFD .” Thesis, Queens University. Accessed January 18, 2021. http://hdl.handle.net/1974/27907.

Note: this citation may be lacking information needed for this citation format:
No year of publication.
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Wadey, Alexander. “Evaporative Spray Cooling of Hot Air Flow from a Round Nozzle: Experiments and CFD .” Web. 18 Jan 2021.

Note: this citation may be lacking information needed for this citation format:
No year of publication.

Vancouver:

Wadey A. Evaporative Spray Cooling of Hot Air Flow from a Round Nozzle: Experiments and CFD . [Internet] [Thesis]. Queens University; [cited 2021 Jan 18]. Available from: http://hdl.handle.net/1974/27907.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
No year of publication.

Council of Science Editors:

Wadey A. Evaporative Spray Cooling of Hot Air Flow from a Round Nozzle: Experiments and CFD . [Thesis]. Queens University; Available from: http://hdl.handle.net/1974/27907

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
No year of publication.

30. Soriano, Guillermo Enrique. Study of the Physics of Droplet Impingement Cooling.

Degree: PhD, Mechanical Engineering, 2012, Texas A&M University

URL: http://hdl.handle.net/1969.1/ETD-TAMU-2011-05-9154

► Spray cooling is one of the most promising technologies in applications which require large heat removal capacity in very small areas. Previous experimental studies have… (more)

▼ Spray cooling is one of the most promising technologies in applications which require large heat removal capacity in very small areas. Previous experimental studies have suggested that one of the main mechanisms of heat removal in spray cooling is forced convection with strong mixing due to droplet impingement. These mechanisms have not been completely understood mainly due to the large number of physical variables, and the inability to modulate and control variables such as droplet frequency and droplet size. Our approach consists of minimizing the number of experimental variables by controlling variables such as droplet direction, velocity and diameter. A study of heat transfer for single and multiple droplet impingements using HFE- 7100 as the cooling fluid under constant heat flux conditions is presented. Monosized single and multiple droplet trains were produced using a piezoelectric droplet generator with the ability to adjust droplet frequency, diameter, velocity, and spacing between adjacent droplets. In this study, heaters consisting of a layer of Indium Tin Oxide (ITO) as heating element, and ZnSe substrates were used. Surface temperature at the liquid-solid interface was measured using Infrared Thermography. Heat transfer behavior was characterized and critical heat flux was measured. Film thickness was measured using a non-invasive optical technique inside the crown formation produced by the impinging droplets. Hydrodynamic phenomena at the droplet impact zone was studied using high speed imaging. Impact regimes of the impinging droplets were identified, and their effect on heat transfer performance were discussed. The results and effects of droplet frequency, droplet diameter, droplet velocity, and fluid flow rate on heat flux behavior, critical heat flux, and film morphology were elucidated. The study showed that forced heat convection is the main heat transfer mechanism inside the crown formation formed by droplet impingement and impact regimes play an important role on heat transfer behavior. In addition, this study found that spacing among adjacent droplets is the most important factor for multiple droplet stream heat transfer behavior. The knowledge generated through the study provides tools and know-how necessary for the design and development of enhanced spray cooling systems. Advisors/Committee Members: Alvarado, Jorge L. (advisor), Hassan, Yassin (committee member), Banerjee, Debjyoti (committee member), Lau, Sai (committee member).

Subjects/Keywords: Heat transfer; spray cooling; droplet impingement cooling

…III Jet Cooling Review . . . . . . . . . . . . . . . . . Spray Cooling Review… …applications such as spray cooling which is routinely used in miniaturized packaging electronic… …on spray cooling phenomena. The experimental results and analysis will help in the design… …of better spray and droplet cooling systems. A. Motivation Thermal management of… …include: spray cooling, jet cooling, single and multipledroplet cooling, vapor compression…

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APA (6^th Edition):

Soriano, G. E. (2012). Study of the Physics of Droplet Impingement Cooling. (Doctoral Dissertation). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/ETD-TAMU-2011-05-9154

Chicago Manual of Style (16^th Edition):

Soriano, Guillermo Enrique. “Study of the Physics of Droplet Impingement Cooling.” 2012. Doctoral Dissertation, Texas A&M University. Accessed January 18, 2021. http://hdl.handle.net/1969.1/ETD-TAMU-2011-05-9154.

MLA Handbook (7^th Edition):

Soriano, Guillermo Enrique. “Study of the Physics of Droplet Impingement Cooling.” 2012. Web. 18 Jan 2021.

Vancouver:

Soriano GE. Study of the Physics of Droplet Impingement Cooling. [Internet] [Doctoral dissertation]. Texas A&M University; 2012. [cited 2021 Jan 18]. Available from: http://hdl.handle.net/1969.1/ETD-TAMU-2011-05-9154.

Council of Science Editors:

Soriano GE. Study of the Physics of Droplet Impingement Cooling. [Doctoral Dissertation]. Texas A&M University; 2012. Available from: http://hdl.handle.net/1969.1/ETD-TAMU-2011-05-9154

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Open Access Theses and Dissertations