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Solar tower combined cycle plant with thermal storage: energy and exergy analyses
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  • Journal title : Advances in Energy Research
  • Volume 4, Issue 1,  2016, pp.29-45
  • Publisher : Techno-Press
  • DOI : 10.12989/eri.2016.4.1.029
 Title & Authors
Solar tower combined cycle plant with thermal storage: energy and exergy analyses
Mukhopadhyay, Soumitra; Ghosh, Sudip;
 Abstract
There has been a growing interest in the recent time for the development of solar power tower plants, which are mainly used for utility scale power generation. Combined heat and power (CHP) is an efficient and clean approach to generate electric power and useful thermal energy from a single heat source. The waste heat from the topping Brayton cycle is utilized in the bottoming HRSG cycle for driving steam turbine and also to produce process steam so that efficiency of the cycle is increased. A thermal storage system is likely to add greater reliability to such plants, providing power even during non-peak sunshine hours. This paper presents a conceptual configuration of a solar power tower combined heat and power plant with a topping air Brayton cycle. A simple downstream Rankine cycle with a heat recovery steam generator (HRSG) and a process heater have been considered for integration with the solar Brayton cycle. The conventional GT combustion chamber is replaced with a solar receiver. The combined cycle has been analyzed using energy as well as exergy methods for a range of pressure ratio across the GT block. From the thermodynamic analysis, it is found that such an integrated system would give a maximum total power (2.37 MW) at a much lower pressure ratio (5) with an overall efficiency exceeding 27%. The solar receiver and heliostats are the main components responsible for exergy destruction. However, exergetic performance of the components is found to improve at higher pressure ratio of the GT block.
 Keywords
brayton cycle;power tower;thermal storage;combined cycle;exergy analysis;
 Language
English
 Cited by
1.
Cascade system using both trough system and dish system for power generation, Energy Conversion and Management, 2017, 142, 494  crossref(new windwow)
2.
Energy and exergy analyses of various typical solar energy applications: A comprehensive review, Renewable and Sustainable Energy Reviews, 2017  crossref(new windwow)
 References
1.
Cengel, Y.A. and Boles, M.A. (2003), Thermodynamics An Engineering Approach, Tata McGraw-Hill Publishing Company Limited, New Delhi, India.

2.
Flueckiger, S.M., Yang, Z. and Garimella, S.V. (2013), "Review of molten-salt thermocline tank modeling for solar thermal energy storage", Heat Transf. Eng., 34(10), 787-800. crossref(new window)

3.
Flueckiger, S.M., Iverson, B.D., Garimella, S.V. and Pacheco, J.E. (2014), "System-level simulation of a solar power tower plant with thermocline thermal energy storage", Appl. Energy, 113, 86-96. crossref(new window)

4.
Ghosh, S. and De, S. (2004), "First and second law performance variations of a coal gasification fuel-cellbased combined cogeneration plant with varying load", Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy, 218, 477-485.

5.
Heller, P., Pfander, M., Denk, T., Felix, T., Valverde, A., Fernandez, J. and Ring, A. (2006), "Test and evaluation of a solar powered gas turbine system", Solar Energy, 80, 1225-1230. crossref(new window)

6.
Mills, D. (2004), "Advances in solar thermal electricity technology", Solar Energy, 76, 19-31. crossref(new window)

7.
Montes, M.J., Abanades, A. and Martinez-Val, J.M. (2010), "Thermofluidynamic model and com-parative analysis of parabolic trough collectors using oil, water/steam, or molten salt as heat tran-sfer fluids", J. Solar Energy Eng., 132, DOI: 10.1115/1.4001399. crossref(new window)

8.
Reuss, M., Beck, M. and Muller, J.P. (1997), "Design of a seasonal thermal energy storage in the ground", Solar Energy, 59(4-6), 247-257. crossref(new window)

9.
Shabgard, H., Robak, C.W., Bergman, T.L. and Faghri, A. (2012), "Heat transfer and exergy analysis of cascaded latent heat storage with gravity-assisted heat pipes for concentrating solar power applications", Solar Energy, 86, 816-830. crossref(new window)

10.
Talbi, M.M. and Agnew, B. (2000), "Exergy analysis: an absorption refrigerator using lithium bromide and water as the working fluids", Appl. Therm. Eng., 20, 619-630. crossref(new window)

11.
Xu, E., Yu, Q., Wang, Z. and Tang, C. (2011), "Modeling and simulation of 1 MW DAHAN solar thermal power tower plant", Renew. Energy, 36, 848-857. crossref(new window)

12.
Kotas, T.J. (1985), The Exergy Method of Thermal Plant Analysis, Elsevier Ltd.

13.
Sukhatme, S.P. and Nayak, J.K. (2008), Solar Energy Principles Of Thermal Collection And Storage, Tata McGraw-Hill Publishing Company Limited, New Delhi, India.

14.
European Commission (EC) (2002), SOLGATE Solar hybrid gas turbine electric power system-final publishable report, Publication office, European commission contract ENK5-CT-2000-00333, http://ec.europa.eu/research/energy/pdf/solgate_en.pdf.

15.
Earth‟s Energy Budget. https://ag.tennessee.edu/solar/Pages/What%20Is%20Solar%20Energy/Earth-Energy-Budget.aspx.

16.
Herrmann, U., Geyer, M., Kearney, D. (2002), "Overview on thermal storage systems", Workshop on Thermal Storage for Trough Power Systems, http://www.nrel.gov/csp/troughnet/pdfs/uh_storage_ overview_ws030320.pdf.

17.
Kearney, D., Kelly, B., Cable, R., Potrovitza, N., Herrmann, U., Nava, P., Mahoney, R., Pacheco, J., Blake, D. and Price, H. (2003), "Overview on use of a molten salt HTF in a trough solar field", NREL Parabolic Trough Thermal Energy Storage Workshop, http://www.nrel.gov/csp/troughnet/pdfs/40028.pdf.

18.
Solar Server Report: Abengoa Yield‟s Mojave 280 MW CSP plant declares commercial operation. http://www.solarserver.com/solar-magazine/solar-news/current/2014/kw49/abengoa-yields-mojave-280-mw-csp-plant-declares-commercial-operation.html.