TY - JOUR
T1 - Annual thermodynamic analysis of solar power with steam injection gas turbine (STIG) cycle for indian conditions
AU - Selwynraj, A. Immanuel
AU - Iniyan, S.
AU - Suganthi, L.
AU - Livshits, M.
AU - Polonsky, Guy
AU - Kribus, Abraham
N1 - Publisher Copyright:
© 2014 The Authors. Published by Elsevier Ltd.
PY - 2014
Y1 - 2014
N2 - Solar thermal energy is now being widely utilized to meet the world's energy demand due to its huge potential. Power generation from solar is varying and high cost of solar thermal energy systems that makes sense only in regions with high solar insolation. In order to overcome these practical issues, low cost solar hybrid steam injection gas turbine (STIG) cycle is adapted. Both gas turbine exhaust stream and solar heat are used for steam generation, and then it is injected into the combustor. The steam injection reduces NOX and CO2 emission in addition to increased power output and plant efficiency compared to the simple cycle. It offers a path for high conversion efficiency without the requirement of operating at high temperature and high pressure in the solar components. The objective of the proposed work is to investigate a conversion method for solar radiation that offers potentially high conversion efficiency and for increased competitiveness against fossil fuels. The annual performance of the cycle for sites in India with local climatic conditions such as ambient temperature, relative humidity and availability of direct normal irradiance to the solar concentrators under two modes of constant and variable power is presented in this paper. The results reveal that the solar to electricity efficiency of solar hybrid STIG plant with a simple Parabolic Trough Collector (PTC) is similar to existing solar thermal technologies and higher solar share is obtained. The study also reveals that the annual CO2 emission is similar to combined cycle plants and lower than gas turbine technologies.
AB - Solar thermal energy is now being widely utilized to meet the world's energy demand due to its huge potential. Power generation from solar is varying and high cost of solar thermal energy systems that makes sense only in regions with high solar insolation. In order to overcome these practical issues, low cost solar hybrid steam injection gas turbine (STIG) cycle is adapted. Both gas turbine exhaust stream and solar heat are used for steam generation, and then it is injected into the combustor. The steam injection reduces NOX and CO2 emission in addition to increased power output and plant efficiency compared to the simple cycle. It offers a path for high conversion efficiency without the requirement of operating at high temperature and high pressure in the solar components. The objective of the proposed work is to investigate a conversion method for solar radiation that offers potentially high conversion efficiency and for increased competitiveness against fossil fuels. The annual performance of the cycle for sites in India with local climatic conditions such as ambient temperature, relative humidity and availability of direct normal irradiance to the solar concentrators under two modes of constant and variable power is presented in this paper. The results reveal that the solar to electricity efficiency of solar hybrid STIG plant with a simple Parabolic Trough Collector (PTC) is similar to existing solar thermal technologies and higher solar share is obtained. The study also reveals that the annual CO2 emission is similar to combined cycle plants and lower than gas turbine technologies.
KW - Gas turbine cycle
KW - Solar hybrid stig cycle
KW - Steam injection
UR - http://www.scopus.com/inward/record.url?scp=84922273796&partnerID=8YFLogxK
U2 - 10.1016/j.egypro.2014.10.327
DO - 10.1016/j.egypro.2014.10.327
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AN - SCOPUS:84922273796
SN - 1876-6102
VL - 57
SP - 2920
EP - 2929
JO - Energy Procedia
JF - Energy Procedia
T2 - 2013 ISES Solar World Congress, SWC 2013
Y2 - 3 November 2013 through 7 November 2013
ER -