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You searched for +publisher:"Texas A&M University" +contributor:("Fraim, Michael"). Showing records 1 – 2 of 2 total matches.

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Texas A&M University

1. D'Lima, Michelle Lynn. Development of a Thermodynamic Model for Fluids Confined in Spherical Pores.

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

The thermodynamic properties of a fluid confined in extremely small pores can be substantially different from those observed of the same bulk fluid. These differences in behavior could have technical applications in adsorption-based separations; may pose a challenge with regards to the extraction of oil entrapped in the small cavities of reservoir rocks; or could even be utilized in complex heterogeneous catalytic systems such as those used in gas-to liquid fuel conversions. This thesis describes the use of the generalized van der Waals theory to extend cubic equations of state, such as Peng-Robinson, that are widely applied in the oil and gas industry to model the behavior of pure fluids as well as mixtures confined in spherical pores. Empirical expressions were developed for the coordination number in spherical pores as a function of the molecule to pore size ratio, for the distribution of molecules along the pore radius as function of temperature, and of the interaction potential between the molecules and the pore wall. Despite their relative simplicity, the expressions capture the limiting behaviors expected at high and low temperatures. The model parameters were then fitted to experimental data for the adsorption of light hydrocarbons and gases in common adsorbents. Finally, the calculated results were compared to the experimental results in order to assess the performance of the model, through adsorption equilibrium calculations. Advisors/Committee Members: Castier, Marcelo (advisor), Hall, Kenneth (committee member), Fraim, Michael (committee member).

Subjects/Keywords: Confinement; Adsorption; Peng-Robinson; Equation of State; Spherical pores

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

APA (6th Edition):

D'Lima, M. L. (2014). Development of a Thermodynamic Model for Fluids Confined in Spherical Pores. (Masters Thesis). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/153385

Chicago Manual of Style (16th Edition):

D'Lima, Michelle Lynn. “Development of a Thermodynamic Model for Fluids Confined in Spherical Pores.” 2014. Masters Thesis, Texas A&M University. Accessed December 01, 2020. http://hdl.handle.net/1969.1/153385.

MLA Handbook (7th Edition):

D'Lima, Michelle Lynn. “Development of a Thermodynamic Model for Fluids Confined in Spherical Pores.” 2014. Web. 01 Dec 2020.

Vancouver:

D'Lima ML. Development of a Thermodynamic Model for Fluids Confined in Spherical Pores. [Internet] [Masters thesis]. Texas A&M University; 2014. [cited 2020 Dec 01]. Available from: http://hdl.handle.net/1969.1/153385.

Council of Science Editors:

D'Lima ML. Development of a Thermodynamic Model for Fluids Confined in Spherical Pores. [Masters Thesis]. Texas A&M University; 2014. Available from: http://hdl.handle.net/1969.1/153385


Texas A&M University

2. Khazndar, Aoubai M. An Investigation of Using Isochoric Data Points in the Development of Natural Gas Equation of State.

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

Access to energy is essential for the survival of humans, and the need for energy rises continuously because of population increase and economic progress. Fossil fuels continue to play the major role in satisfying energy demand. Among the fossil fuels, natural gas is the cleanest, most available, and most useful of the energy sources. It finds extensive use in residential, commercial, electric power generation and industrial applications. Moreover, the international energy outlook report released in 2011 indicates that yearly world natural gas consumption should increase from 111 trillion cubic feet in 2008 to 169 trillion cubic feet in 2035. Recently, new natural gas reservoirs have been discovered in many places throughout the world. In 2012, the total world supplies of proved natural gas reserves were estimated to be 6,746.8 trillion cubic feet. Thus, studies on natural gas are significant to advance the technique of natural gas processing, transportation and storage. In these three sectors, an accurate knowledge of the thermodynamic properties of natural gas is essential for engineering and technical processes. Developing accurate equations of state is important, and can provide us with accurate thermodynamic properties for natural gas. In addition, developing new techniques to produce mathematical models is important to create more accurate results and to enrich this field with new ideas, which might provide progress in the future. The aim of this thesis is to demonstrate a new approach for developing an equation of state. This technique relies upon isochoric data of carbon dioxide pure component to develop mathematical models. This thesis contains nine models based upon experimental and generated data. The generated data come from REFPROP, which also provides an accurate means to adjust experimental data to true isochores. Within this thesis, a regression analysis was performed - using Polymath 6.1 - to provide mathematical structure of the equation for carbon dioxide. Results indicate that models covering vapor phase has less deviation than models covering liquid or both phases, and models developed by the generated data has less deviation than models developed by the experimental data. The deviation obtained by most of the models was less than the random error imposed upon the data. In this study, we conclude that modeling an equation of state from isochores appears to provide sufficient advantages to encourage additional studies on pure fluids and multi-component mixtures. Advisors/Committee Members: Hall, Kenneth R (advisor), Atilhan , Mert (advisor), Castier, Marcelo (committee member), Fraim , Michael (committee member).

Subjects/Keywords: Energy; Natural gas; isochores; Equation of state; Carbon dioxide

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

APA (6th Edition):

Khazndar, A. M. (2014). An Investigation of Using Isochoric Data Points in the Development of Natural Gas Equation of State. (Masters Thesis). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/152489

Chicago Manual of Style (16th Edition):

Khazndar, Aoubai M. “An Investigation of Using Isochoric Data Points in the Development of Natural Gas Equation of State.” 2014. Masters Thesis, Texas A&M University. Accessed December 01, 2020. http://hdl.handle.net/1969.1/152489.

MLA Handbook (7th Edition):

Khazndar, Aoubai M. “An Investigation of Using Isochoric Data Points in the Development of Natural Gas Equation of State.” 2014. Web. 01 Dec 2020.

Vancouver:

Khazndar AM. An Investigation of Using Isochoric Data Points in the Development of Natural Gas Equation of State. [Internet] [Masters thesis]. Texas A&M University; 2014. [cited 2020 Dec 01]. Available from: http://hdl.handle.net/1969.1/152489.

Council of Science Editors:

Khazndar AM. An Investigation of Using Isochoric Data Points in the Development of Natural Gas Equation of State. [Masters Thesis]. Texas A&M University; 2014. Available from: http://hdl.handle.net/1969.1/152489

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