Exergy analysis and annual exergetic performance evaluation of solar hybrid STIG (steam injected gas turbine) cycle for Indian conditions

The STIG (steam injected gas turbine) cycle offers a way for increasing the power, efficiency and NOx reduction in gas turbines by injecting steam into the combustor. The present exergetic study is to investigate the influence of compressor PR (pressure ratio), TIT (turbine inlet temperature) and SAR (steam to air ratio) on the solar hybrid STIG cycle. Exergy analysis was performed for four cases based on the parameters of real gas turbines. Annual exergetic performance is also presented for the sites Indore and Jaipur in India under constant and variable power modes. The analysis suggests that the steam injection does not affect the performance of compressor. The total exergy destruction in the cycle increases with SAR and TIT. The exergetic efficiency also increases in the range of 40%–54.2% with SAR up to 0.9. The magnitude of exergy destruction in all components in the cycle (except compressor) increases by increasing SAR. Nevertheless, largest component of exergy destruction in the combustion chamber increases with SAR and TIT about 53% at SAR 0.9. The exergetic efficiency of combustor increases from 74.5% to 81.8% with increasing SAR from 0.3 to 0.9. The exergy destruction in the turbine increases considerably with compressor pressure ratio, sparingly with SAR and independent of TIT. The exergy destruction in the SH (super heater) is less compared to the economiser in the HRSG (heat recovery steam generator). The contribution of solar energy (exergetic solar fraction) is more sensitive to TIT and SAR than PR. It is noticed that increase in turbine outlet temperature, led by PR and TIT, decreases the exergetic solar fraction, and the cycle exergetic efficiency improves as the exergetic solar fraction increases, which leads to an improved performance device. The second largest percentage of exergy destruction is in the flue gas condenser to recover water for recycling, and the heat removed from the condenser is lost to the surroundings by cooling air. The annual values of exergetic solar fraction and exergetic efficiency at Indore are higher than Jaipur in both constant and variable power modes of operation.

[1]  Mustafa Zeki,et al.  SECOND LAW AND SENSITIVITY ANALYSIS OF A COMBINED CYCLE POWER PLANT IN TURKEY , 2011 .

[2]  Fahad A. Al-Sulaiman,et al.  Exergy analysis of parabolic trough solar collectors integrated with combined steam and organic Rankine cycles , 2014 .

[3]  Ali Akbar Alemrajabi,et al.  Exergy based performance analysis of a solid oxide fuel cell and steam injected gas turbine hybrid power system , 2009 .

[4]  Abraham Kribus,et al.  Solar STIG Cycle Annual Analysis , 2012 .

[5]  Sanjay.  Investigation of effect of variation of cycle parameters on thermodynamic performance of gas-steam c , 2010 .

[6]  Abdolsaeid Ganjeh Kaviri,et al.  Exergetic and economic evaluation of the effect of HRSG configurations on the performance of combined cycle power plants , 2012 .

[7]  L. Suganthi,et al.  Annual performance of the solar hybrid STIG cycle , 2014 .

[8]  T. Srinivas,et al.  Sensitivity analysis of STIG based combined cycle with dual pressure HRSG , 2008 .

[9]  Tatiana Morosuk,et al.  Understanding the thermodynamic inefficiencies in combustion processes , 2013 .

[10]  Hui Hong,et al.  A novel hybrid oxy-fuel power cycle utilizing solar thermal energy , 2007 .

[11]  F. J. Wang,et al.  Integration of steam injection and inlet air cooling for a gas turbine generation system , 2004 .

[12]  Erik Dick,et al.  Technological and economical analysis of water recovery in steam injected gas turbines , 2001 .

[13]  S. C. Kaushik,et al.  Exergy analysis and parametric study of concentrating type solar collectors , 2007 .

[14]  L. Suganthi,et al.  Annual Thermodynamic Analysis of Solar Power with Steam Injection Gas Turbine (STIG) Cycle for Indian Conditions , 2014 .

[15]  T. S. Kim,et al.  Part load performance analysis of recuperated gas turbines considering engine configuration and operation strategy , 2006 .

[16]  Kwang J. Kim,et al.  Second law analysis and optimization of a combined triple power cycle , 2002 .

[17]  S. C. Kaushik,et al.  Exergetic analysis and performance evaluation of parabolic trough concentrating solar thermal power plant (PTCSTPP) , 2012 .

[18]  Kousuke Nishida,et al.  Regenerative steam-injection gas-turbine systems , 2005 .

[19]  O. T. Olakoyejo,et al.  A thermodynamic analysis of a biogas-fired integrated gasification steam injected gas turbine (BIG/STIG) plant , 2007 .

[20]  S. K. Tyagi,et al.  Renewable and Sustainable Energy Reviews Energy and Exergy Analyses of Thermal Power Plants: a Review , 2022 .

[21]  A. Kribus,et al.  Solar hybrid steam injection gas turbine (STIG) cycle , 2012 .

[22]  Jinyue Yan,et al.  Humidified gas turbines—a review of proposed and implemented cycles , 2005 .

[23]  Yaser Sahebi,et al.  Notice of RetractionExergy analysis of gas turbine with fogging inlet cooling , 2010, 2010 2nd International Conference on Mechanical and Electronics Engineering.

[24]  Yongping Yang,et al.  Thermodynamic analysis of a novel integrated solar combined cycle , 2014 .

[25]  Sergio A. A. G. Cerqueira,et al.  Thermoeconomic Evaluation of a Gas Turbine Cogeneration System , 1998, Advanced Energy Systems.

[26]  D. P. S Abam,et al.  Computer Simulation of a Gas Turbine Performance , 2011 .

[27]  F. J. Wang,et al.  Performance improvement for a simple cycle gas turbine GENSET--a retrofitting example , 2002 .

[28]  Andrea Mazzucco,et al.  Thermo-economic analysis of a solid oxide fuel cell and steam injected gas turbine plant integrated with woodchips gasification , 2014 .

[29]  Zhifeng Wang,et al.  Energy and exergy analysis of solar power tower plants , 2011 .

[30]  Ibrahim Dincer,et al.  Exergy, exergoeconomic and environmental analyses and evolutionary algorithm based multi-objective o , 2011 .