Abstract
The present study is dealing with the development and implementation of an integrated solar combined cycle power plant in which heat recovery system generator gets its energy from the waste heat of a gas turbine unit in additional to solar concentrator field. The solar field is aimed to produce a nearly saturated steam at maximum solar radiation times and superheating by the exhaust gases from the gas turbine unit. The superheating steam is expanded through a simple one stage steam turbine. The main problem of the plant lies in the fact that the efficiency of the solar system diminishes as its operating temperature rises, while the efficiency of the steam turbine rises as its operating temperature rise.
A simulation mathematical model has been developed for each component and the components are matched together. This model is used to predict the temperatures, mass and heat transfer within the system under various operating and design conditions. The calculations were limited to a simple Rankine cycle for the steam turbine. The studied parameters included the contributions of the solar energy as well as the waste energy with the product of the gas turbine. The efficiencies of the solar concentrator, steam turbine, and gas turbine are considered also. The final results showed that the solar energy can contribute by about 70% while the energy recovery for the waste energy for the gas turbine can contribute by about 9%. The values of the efficiencies reached to about 62% for the solar concentrator, 40% for the gas turbine, 32% for the steam turbine and the finally the overall efficiency reached to 29% for the solar integrated combined cycle power plant. Some recommendations and proposed work are suggested in the paper.
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© 2007 Zhejiang University Press, Hangzhou and Springer-Verlag GmbH Berlin Heidelberg
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Elhaj, M.A., Matrawy, K.K., Yassin, J.S. (2007). Modeling and Performance Prediction of a Solar Powered Rankin Cycle/Gas Turbine Cycle. In: Cen, K., Chi, Y., Wang, F. (eds) Challenges of Power Engineering and Environment. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-76694-0_18
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DOI: https://doi.org/10.1007/978-3-540-76694-0_18
Publisher Name: Springer, Berlin, Heidelberg
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