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You searched for subject:(Steam accumulator). Showing records 1 – 3 of 3 total matches.

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University of Texas – Austin

1. -4976-2658. Modeling and integration of steam accumulators in nuclear steam supply systems.

Degree: Mechanical Engineering, 2016, University of Texas – Austin

Nuclear power plants in deregulated markets need to leverage thermal energy storage to take advantage of peak demand pricing to improve their profitability in an increasingly competitive landscape. Substantial research has been conducted to integrate steam accumulators into concentrated solar power plants and they present a viable solution for the commercial nuclear fleet. Prior work in this field has concentrated mainly on the installation of separate turbine-generators to generate electricity from the stored thermal energy. This work demonstrates that the use of stored thermal energy to augment feedwater heaters and moisture separator reheaters, in lieu of using separate electrical generating equipment, can result in sizable increases in electrical power production for a signifcant period of time provided that a suitably sized main steam turbine, main generator, and support systems are present. Additionally, a model was constructed using prior work to reliably demonstrate the time response of an accumulator to charge and discharge operations. Advisors/Committee Members: Schneider, Erich A. (advisor).

Subjects/Keywords: Steam accumulator; Nuclear

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

APA (6th Edition):

-4976-2658. (2016). Modeling and integration of steam accumulators in nuclear steam supply systems. (Thesis). University of Texas – Austin. Retrieved from http://hdl.handle.net/2152/45853

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

Chicago Manual of Style (16th Edition):

-4976-2658. “Modeling and integration of steam accumulators in nuclear steam supply systems.” 2016. Thesis, University of Texas – Austin. Accessed July 20, 2019. http://hdl.handle.net/2152/45853.

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

MLA Handbook (7th Edition):

-4976-2658. “Modeling and integration of steam accumulators in nuclear steam supply systems.” 2016. Web. 20 Jul 2019.

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

Vancouver:

-4976-2658. Modeling and integration of steam accumulators in nuclear steam supply systems. [Internet] [Thesis]. University of Texas – Austin; 2016. [cited 2019 Jul 20]. Available from: http://hdl.handle.net/2152/45853.

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

Council of Science Editors:

-4976-2658. Modeling and integration of steam accumulators in nuclear steam supply systems. [Thesis]. University of Texas – Austin; 2016. Available from: http://hdl.handle.net/2152/45853

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

2. Schlaifer, Perrine. Performance Calculations and Optimization of a Fresnel Direct Steam Generation CSP Plant with Heat Storage.

Degree: Heat and Power Technology, 2013, KTH

This master thesis deals with the performance calculations of a 9MW linear Fresnel CSP plant withdirect steam generation built by the Solar Division of the CNIM Company. The aim was to calculate theannual electricity production taking into account the weather conditions as well as some steam storage.At first, a steam accumulator model was developed with Excel, in order to estimate the pressureevolution in the tanks during the charging, storage and discharging processes. The data obtained withthis model was then integrated to the thermodynamic cycle model, programmed with Excel, whichcalculated the electrical power production knowing the thermal power available in the solar field. Theelectricity production calculations were made every 600 seconds during one year.To improve the results accuracy, the influence of the plant location slope was estimated, calculating theequivalent azimuth and elevation angles in a new spherical coordinates system. For an average slope of4.21° at the plant location, the annual thermal energy gain is 14.4% (with a gain up to 60% duringwinter days) and the annual electricity production is increased by 12.59%. The influence of frost on themirrors during cold and humid nights was also estimated with a simple model of the energy needed toheat up a constant layer of ice. Depending on the assumptions, the electricity production losses werebetween 1.27 and 2.84% of annual electricity production. The losses due to plant shutdowns set by theelectrical network manager RTE during the snowmelt months were also estimated. The annualelectricity production could decrease by 8.02 to 11.57 % because of the load management, dependingon the days during which the plant is shutdown.Finally, an economic optimisation was led with prices estimated by CNIM, which gave an optimal solarfield design with 31 lines and 5 steam accumulators. The payback time would then be 9.887 years.

Subjects/Keywords: CSP plant; thermal solar plant; linear Fresnel technology; direct steam generation; steam accumulator; steam turbine

…France) Figure IV.1 Figure IV.2 Figure IV.3 Figure IV.4 Figure IV.5 Steam accumulator… …pressure with the mass of steam charged inside the accumulator Evolution of the pressure with the… …mass of steam discharged from the accumulator Evolution of the pressure with the sum of mass… …flow of steam charged in the accumulator Evolution of the pressure with the sum of mass-flow… …of steam discharged from the accumulator Results obtained for the charging process in [… 

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

APA (6th Edition):

Schlaifer, P. (2013). Performance Calculations and Optimization of a Fresnel Direct Steam Generation CSP Plant with Heat Storage. (Thesis). KTH. Retrieved from http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-116806

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

Chicago Manual of Style (16th Edition):

Schlaifer, Perrine. “Performance Calculations and Optimization of a Fresnel Direct Steam Generation CSP Plant with Heat Storage.” 2013. Thesis, KTH. Accessed July 20, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-116806.

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

MLA Handbook (7th Edition):

Schlaifer, Perrine. “Performance Calculations and Optimization of a Fresnel Direct Steam Generation CSP Plant with Heat Storage.” 2013. Web. 20 Jul 2019.

Vancouver:

Schlaifer P. Performance Calculations and Optimization of a Fresnel Direct Steam Generation CSP Plant with Heat Storage. [Internet] [Thesis]. KTH; 2013. [cited 2019 Jul 20]. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-116806.

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

Council of Science Editors:

Schlaifer P. Performance Calculations and Optimization of a Fresnel Direct Steam Generation CSP Plant with Heat Storage. [Thesis]. KTH; 2013. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-116806

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

3. -8299-7785. Construction of hybrid nuclear thermal energy storage systems under electricity market uncertainty.

Degree: Mechanical Engineering, 2017, University of Texas – Austin

The objective of this thesis is to simulate the construction of thermal energy storage systems for nuclear power plants in the ERCOT grid. Steam accumulators were selected as the thermal energy storage technology. A thermo-economic model was used to estimate the operating and cost parameters for sixteen different steam accumulator designs. A new capacity expansion model of the ERCOT grid was built on top of an existing production cost model for wholesale electricity market simulations. Sixteen permutations of four scenario pairs were simulated to illustrate the uncertainty of future market conditions. It was optimal to build steam accumulators in three of the permutations. Scenarios common to these per-mutations were high future natural gas prices (three permutations), aggressive capital cost declines for solar PV and wind generators (three), high load growth (two), and a carbon tax (two). This suggests that large-scale thermal energy storage systems may be most successful in future markets under these conditions. Advisors/Committee Members: Landsberger, Sheldon (advisor).

Subjects/Keywords: Nuclear power; Thermal energy storage; Steam accumulator; Electricity market model; Capacity expansion; ERCOT

…76 ix Table 19. Steam accumulator parameter assumptions… …77 Table 20. Steam accumulator parameters calculated from the MATLAB thermodynamic model… …accumulator system utilizing separate steam turbines (reprinted from [36])… …salts, metal hydrides, and artificial geothermal. Steam accumulator and molten salt storage… …wind, and a carbon tax. Steam accumulator systems will be considered as retrofits to existing… 

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

APA (6th Edition):

-8299-7785. (2017). Construction of hybrid nuclear thermal energy storage systems under electricity market uncertainty. (Thesis). University of Texas – Austin. Retrieved from http://hdl.handle.net/2152/60394

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

Chicago Manual of Style (16th Edition):

-8299-7785. “Construction of hybrid nuclear thermal energy storage systems under electricity market uncertainty.” 2017. Thesis, University of Texas – Austin. Accessed July 20, 2019. http://hdl.handle.net/2152/60394.

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

MLA Handbook (7th Edition):

-8299-7785. “Construction of hybrid nuclear thermal energy storage systems under electricity market uncertainty.” 2017. Web. 20 Jul 2019.

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

Vancouver:

-8299-7785. Construction of hybrid nuclear thermal energy storage systems under electricity market uncertainty. [Internet] [Thesis]. University of Texas – Austin; 2017. [cited 2019 Jul 20]. Available from: http://hdl.handle.net/2152/60394.

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

Council of Science Editors:

-8299-7785. Construction of hybrid nuclear thermal energy storage systems under electricity market uncertainty. [Thesis]. University of Texas – Austin; 2017. Available from: http://hdl.handle.net/2152/60394

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

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