Thermodynamic Study and Exergetic Analysis of the Integrated SOFC-GT-Kalina Power Cycle

In this paper the SOFC-GT-Kalina (solid oxide fuel cell, gas turbine, and Kalina cycle) integrated system is proposed. The system uses Kalina cycle as the bottoming cycle to recovery the waste heat from the gas turbine to generate power. Kalina cycle uses ammonia-water mixture as the work fluid which has sliding-temperature boiling characteristics. By comparing with the SOFC-GT-ST (solid oxide fuel cell, gas turbine, and steam turbine cycle) system as the reference system, the systems are simulated by Aspen Plus through analyzing the overall system performance. Electrical and exergy efficiency of the proposed system are 74.41% and 71.93%, and electrical and exergy efficiency of the reference system are 71.45% and 69.07%, proving the superiority of Kalina cycle for waste heat recovery. In addition, the exergy losses of each component are studied, and the detail performance analysis of the proposed system is presented, consisting of thermal analysis, exergy analysis and EUD (Energy-utilization diagram) analysis, which intuitively disclosed the causes of exergy loss. Additionally, it was revealed that there exists an optimal current density at 350 mA/cm2 for power and power density.

[1]  Jinshuai Yu,et al.  Recent progress on solid oxide fuel cell: Lowering temperature and utilizing non-hydrogen fuels , 2013 .

[2]  First law-based thermodynamic analysis on Kalina cycle , 2008 .

[3]  F. Calise,et al.  Design and partial load exergy analysis of hybrid SOFC–GT power plant , 2006 .

[4]  H. H. Erdem,et al.  An analysis of SOFC/GT CHP system based on exergetic performance criteria , 2008 .

[5]  Jia-ling Zhu,et al.  Comparison of a Kalina cycle based cascade utilization system with an existing organic Rankine cycle based geothermal power system in an oilfield , 2013 .

[6]  A. Thallam Thattai,et al.  Towards retrofitting integrated gasification combined cycle (IGCC) power plants with solid oxide fuel cells (SOFC) and CO2 capture – A thermodynamic case study , 2017 .

[7]  S. C. Kaushik,et al.  Energy and exergy analysis and optimization of Kalina cycle coupled with a coal fired steam power plant , 2013 .

[8]  Ibrahim Dincer,et al.  Energy and exergy analyses of direct ammonia solid oxide fuel cell integrated with gas turbine power cycle , 2012 .

[9]  Ibrahim Dincer,et al.  Energy and exergy analyses of a combined ammonia-fed solid oxide fuel cell system for vehicular applications , 2011 .

[10]  G. Scott Samuelsen,et al.  Comparative analysis of SOFC-GT freight locomotive fueled by natural gas and diesel with onboard reformation , 2015 .

[11]  He Weifeng,et al.  Comparative analysis of a bottoming transcritical ORC and a Kalina cycle for engine exhaust heat recovery , 2015 .

[12]  Masoud Rokni,et al.  Thermodynamic and thermoeconomic analysis of a system with biomass gasification, solid oxide fuel cell (SOFC) and Stirling engine , 2014 .

[13]  G. Naterer,et al.  Thermodynamic analysis of a combined gas turbine power system with a solid oxide fuel cell through exergy , 2008 .

[14]  Stefano Campanari,et al.  Thermodynamic model and parametric analysis of a tubular SOFC module , 2001 .

[15]  V. Zare,et al.  A thermodynamic comparison between organic Rankine and Kalina cycles for waste heat recovery from the Gas Turbine-Modular Helium Reactor , 2015 .

[16]  M. He,et al.  A review of research on the Kalina cycle , 2012 .

[17]  Xuanming Su,et al.  Energy–exergy analysis and optimization of the solar-boosted Kalina cycle system 11 (KCS-11) , 2014 .

[18]  Brian Elmegaard,et al.  Decentralized combined heat and power production by two-stage biomass gasification and solid oxide fuel cells , 2013 .

[19]  Yongping Yang,et al.  Comparison study on different SOFC hybrid systems with zero-CO2 emission , 2013 .

[20]  Sanjay,et al.  Thermodynamic assessment of SOFC-ICGT hybrid cycle: Energy analysis and entropy generation minimization , 2017 .

[21]  G. Naterer,et al.  Energy and exergy analyses of an integrated SOFC and coal gasification system , 2012 .

[22]  M. Mehrpooya,et al.  Conceptual and basic design of a novel integrated cogeneration power plant energy system , 2017 .

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

[24]  E. D. Rogdakis,et al.  A Kalina power cycle driven by renewable energy sources , 2009 .

[25]  O. Arslan.  Exergoeconomic evaluation of electricity generation by the medium temperature geothermal resources, using a Kalina cycle: Simav case study , 2010 .

[26]  Ronald DiPippo,et al.  Second Law assessment of binary plants generating power from low-temperature geothermal fluids , 2004 .

[27]  Costante Mario Invernizzi,et al.  Heat recovery from Diesel engines: A thermodynamic comparison between Kalina and ORC cycles , 2010 .

[28]  Shinji Kimijima,et al.  Performance analysis for the part-load operation of a solid oxide fuel cell–micro gas turbine hybrid system , 2008 .

[29]  Pranjal Sarmah,et al.  Energy and exergy based performance analyses of a solid oxide fuel cell integrated combined cycle power plant , 2014 .

[30]  Yasuyuki Ikegami,et al.  A study on Kalina solar system with an auxiliary superheater , 2012 .