Second law assessment of a syngas-fuelled triple thermodynamic cycle for sustainable power generation

This paper investigates the effects of change in cycle pressure ratio and maximum cycle temperature as well as the change in refrigerant in organic Rankine cycle (ORC) on energy and exergy performance of biomass-driven triple-power cycle. The results show that both first and second law efficiencies of the proposed triple-power cycle decreases with the increase in pressure ratio and increases with the increase in the maximum cycle temperature. The effect of change in the refrigerant in ORC is found to be marginal. Second law assessment of the cycle reveals that combustor, heat recovery steam generator (HRSG), and gasifier are the three main sources of irreversibility, where it is shown that out of the 100% fuel exergy input; around 25% of exergy is destructed in the combustor, 19% in HRSG, and 7.6% in the gasifier. Investigations show that the triple-power cycle has better thermodynamic performance than the combined power cycle driven by biomass.

[1]  Dongxiang Wang,et al.  Efficiency and optimal performance evaluation of organic Rankine cycle for low grade waste heat power generation , 2013 .

[2]  V. Maizza,et al.  Unconventional working fluids in organic Rankine-cycles for waste energy recovery systems , 2001 .

[3]  T. Srinivas,et al.  Biomass-fuelled integrated power and refrigeration system , 2011 .

[4]  C Yi,et al.  Vibrational power flow in beam-plate structures with isolation components , 1998 .

[5]  A. Franco,et al.  Perspectives for the use of biomass as fuel in combined cycle power plants , 2005 .

[6]  John Peter Rutherford,et al.  Heat and Power Applications of Advanced Biomass Gasifiers in New Zealand's Wood Industry A Chemical Equilibrium Model and Economic Feasibility Assessment , 2006 .

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

[8]  Mark A. Paisley,et al.  Biomass Gasification Combined Cycle Opportunities Using the Future Energy SilvaGas® Gasifier Coupled to Alstom’s Industrial Gas Turbines , 2003 .

[9]  James T. Olmsted.  Biomass CHP and Thermal Projects for Federal Facilities , 2012 .

[10]  Richard Edwin Sonntag,et al.  Fundamentals of Thermodynamics , 1998 .

[11]  Sudipta De,et al.  Study of thermodynamic performance of an integrated gasification combined cycle power plant , 1998 .

[12]  D. Y. Goswami,et al.  Organic Working Fluids for a Combined Power and Cooling Cycle , 2005 .

[13]  Pedro J. Mago,et al.  An examination of exergy destruction in organic Rankine cycles , 2008 .

[14]  Ling Wang,et al.  Thermodynamic Study of an Indirect Fired Air Turbine Cogeneration System With Reheat , 1987 .

[15]  Kj Krzysztof Ptasinski,et al.  Exergetic evaluation of biomass gasification , 2007 .

[16]  H Christopher Frey,et al.  Improved system integration for integrated gasification combined cycle (IGCC) systems. , 2006, Environmental science & technology.

[17]  David Faltenhine,et al.  Hit List: A Targeted Approach To Energy Conservation , 2013 .

[18]  Pedro J. Mago,et al.  An examination of regenerative organic Rankine cycles using dry fluids , 2008 .

[19]  T. Srinivas,et al.  Thermal Performance Prediction of a Biomass Based Integrated Gasification Combined Cycle Plant , 2012 .

[20]  Kj Krzysztof Ptasinski,et al.  From coal to biomass gasification: Comparison of thermodynamic efficiency , 2007 .

[21]  A. Bridgwater.  The technical and economic feasibility of biomass gasification for power generation , 1995 .

[22]  Amitava Datta,et al.  Biomass integrated gasification combined cycle power generation with supplementary biomass firing: E , 2011 .

[23]  T. Srinivas,et al.  Thermodynamic Equilibrium Model and Exergy Analysis of a Biomass Gasifier , 2009 .

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

[25]  Rosenberg J. Romero,et al.  Experimental thermodynamic evaluation for a single stage heat transformer prototype build with commercial PHEs , 2015 .

[26]  D. Y. Goswami,et al.  Organic Working Fluids for a Combined Power and Cooling Cycle , 2003 .

[27]  Abdul Khaliq,et al.  Combined first and second-law analysis of gas turbine cogeneration system with inlet air cooling and evaporative aftercooling of the compressor discharge , 2007 .

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

[29]  Tetsuo Fuchino,et al.  Thermo-economic analysis for the optimal conceptual design of biomass gasification energy conversion systems , 2009 .

[30]  Mingtian Xu,et al.  Thermodynamic analysis of waste heat power generation system , 2010 .