Thermodynamic Optimization of New Combined Gas/Steam Power Cycles with HRSG and Heat Exchanger

In this study, energy and exergy analyses for four configurations, simple gas turbine, steam bottoming cycle with heat recovery steam generator, heat exchanger and secondary bottoming cycle, are performed. The waste heat from the turbine exhaust is utilized in order to optimize the efficiency and output of a simple gas turbine cycle. The combined cycle efficiencies and exergy destruction for each configuration have been analyzed parametrically by using first and second laws of thermodynamics. The effects of the pressure ratio and turbine inlet temperatures on the specific fuel consumption, net output power, energy and exergy efficiencies and the exergy destruction of the plant are investigated in this study. It is demonstrated that the maximum output of the plant increases up to 32.1% when TIT $$=$$= 1500 K and up to 19.3% when TIT $$=$$= 2000 K as we go from conventional gas turbine cycle to SBC with HRSG, HX and secondary bottoming cycles.

[1]  Ahmed N. Abdalla,et al.  Gas Turbine Configuration for Improving the performance of Combined Cycle Power Plant , 2011 .

[2]  J.-S. Tsai,et al.  Thermodynamic analysis of mirror gas turbine cycle , 2006 .

[3]  Sudipta De,et al.  Design and operation of a heat recovery steam generator with minimum irreversibility , 1997 .

[4]  Sanjay,et al.  Energy and exergy analysis of intercooled combustion-turbine based combined cycle power plant , 2013 .

[5]  Ashok Kumar,et al.  Steady State Thermal Analysis of Gas Turbine Power Plant Cycles at Higher Temperatures , 2015 .

[6]  Kangyao Deng,et al.  Energy and exergy analyses of a bottoming Rankine cycle for engine exhaust heat recovery , 2013 .

[7]  Mohsen Ghazikhani,et al.  Exergy analysis of gas turbine with air bottoming cycle , 2014 .

[8]  Danilo Salvi,et al.  Optimization of inlet air cooling systems for steam injected gas turbines , 2002 .

[9]  A. M. Alklaibi,et al.  Thermodynamic analysis of gas turbine with air bottoming cycle , 2016 .

[10]  Osamah M. Al-Hawaj,et al.  A combined power cycle with absorption air conditioning , 2007 .

[11]  Yousef S.H. Najjar,et al.  Gas turbine cogeneration systems : a review of some novel cycles , 2000 .

[12]  Abdul Khaliq,et al.  Exergy analysis of gas turbine trigeneration system for combined production of power heat and refrigeration , 2009 .

[13]  Carlo Carcasci,et al.  Performance Analysis in Off-design Condition of Gas Turbine Air-bottoming Combined System , 2014 .

[14]  Mohd. Islam,et al.  Thermodynamic Analysis of Combined Cycle Power Plant , 2010 .

[15]  T. J. Kotas,et al.  The Exergy Method of Thermal Plant Analysis , 2012 .

[16]  A. I. Kalina,et al.  Combined-Cycle System With Novel Bottoming Cycle , 1984 .

[17]  M. Mousavi,et al.  Two new high-performance cycles for gas turbine with air bottoming , 2011 .

[18]  Hongguang Jin,et al.  Fundamental Study on a Novel Gas Turbine Cycle , 2001 .

[19]  Am Bassily.  The application of novel techniques for gas turbine inlet-cooling that improve both the power and efficiency of the modern commercial steam-air-cooled gas turbine combined cycle power plants in hot and humid climates , 2015 .

[20]  M. J. Moran,et al.  Fundamentals of Engineering Thermodynamics , 2014 .

[21]  I. Dincer,et al.  Energy, environment and sustainable development , 1999 .

[22]  Kumar Naradasu Ravi,et al.  Thermodynamic analysis of heat recovery steam generator in combined cycle power plant , 2007 .

[23]  Mahadi Hasan,et al.  Exergy Analysis of Combined Cycle Power Plant: NTPC Dadri, India , 2012 .

[24]  Thamir K. Ibrahim,et al.  Thermal Impact of Operating Conditions on the Performance of a Combined Cycle Gas Turbine , 2012 .

[25]  Alessandro Franco,et al.  Thermodynamic Optimization of the Operative Parameters for the Heat Recovery in Combined Power Plants , 2001 .

[26]  W. Xiang,et al.  Performance improvement of combined cycle power plant based on the optimization of the bottom cycle and heat recuperation , 2007 .

[27]  Olav Bolland,et al.  Air Bottoming Cycle: Use of Gas Turbine Waste Heat for Power Generation , 1996 .

[28]  Abraham Engeda,et al.  A Novel Technique for Steam Turbine Exhaust Pressure Limitation Using Dynamic Pressure Sensors , 2005 .

[29]  Ibrahim Dincer,et al.  Exergy: Energy, Environment and Sustainable Development , 2007 .

[30]  A. M. Al Taweel,et al.  Modeling of heat recovery steam generator performance , 1997 .

[31]  Brian Agnew,et al.  A hybrid gas turbine cycle (Brayton/Ericsson): An alternative to conventional combined gas and steam turbine power plant , 1997 .

[32]  I Dincer,et al.  Exergy analysis of a gas turbine trigeneration system using the Brayton refrigeration cycle for inlet air cooling , 2010 .

[33]  Christopher J. Koroneos,et al.  Optimum gas turbine cycle for combined cycle power plant , 2008 .

[34]  Sarim Al Zubaidy,et al.  Gas turbine performance at varying ambient temperature , 2011 .

[35]  A. Bejan.  Fundamentals of exergy analysis, entropy generation minimization, and the generation of flow architecture , 2002 .

[36]  Chia-Chin Chuang,et al.  Performance effects of combined cycle power plant with variable condenser pressure and loading , 2005 .

[37]  Tadeusz Chmielniak,et al.  Thermodynamic and economic comparative analysis of air and steam bottoming cycle , 2015 .

[38]  Paul A. Dellenback.  Improved Gas Turbine Efficiency Through Alternative Regenerator Configuration , 2002 .