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Thermodynamic analysis of waste heat power generation system

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  • Guo, Jiangfeng
  • Xu, Mingtian
  • Cheng, Lin

Abstract

In the present work, a waste heat power generation system is analyzed based on the criteria with and without considering the heat/exergy loss to the environment. For the criteria without considering the heat/exergy loss to the environment, the first- and second-law efficiencies display different tendencies with the variations of some system parameters. When the heat/exergy loss to the environment is taken into consideration, the first and second law efficiencies display the same tendency. Thus, choosing the appropriate expressions for the performance criteria is crucial for the optimization design of the waste heat power generation system. It is found that there are two approaches to improving the system performance: one is to improve the heat/exergy input; the other is to enhance the heat-work conversion ability of the system. The former would deteriorate the environment if the heat-work conversion ability of the system remains unchanged; the latter could reduce the environmental impact but it’s restricted by the heat/exergy input. Therefore, the optimal operation condition should be achieved at the trade-off between the heat/exergy input and the heat-work conversion ability of the system.

Suggested Citation

  • Guo, Jiangfeng & Xu, Mingtian & Cheng, Lin, 2010. "Thermodynamic analysis of waste heat power generation system," Energy, Elsevier, vol. 35(7), pages 2824-2835.
    • Handle: RePEc:eee:energy:v:35:y:2010:i:7:p:2824-2835
    DOI: 10.1016/j.energy.2010.03.012
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    11. Fu, Jianqin & Liu, Jingping & Ren, Chengqin & Wang, Linjun & Deng, Banglin & Xu, Zhengxin, 2012. "An open steam power cycle used for IC engine exhaust gas energy recovery," Energy, Elsevier, vol. 44(1), pages 544-554.
    12. Xiao, Lan & Wu, Shuang-Ying & Yi, Tian-Tian & Liu, Chao & Li, You-Rong, 2015. "Multi-objective optimization of evaporation and condensation temperatures for subcritical organic Rankine cycle," Energy, Elsevier, vol. 83(C), pages 723-733.
    13. Sun, Zhixin & Gao, Lin & Wang, Jiangfeng & Dai, Yiping, 2012. "Dynamic optimal design of a power generation system utilizing industrial waste heat considering parameter fluctuations of exhaust gas," Energy, Elsevier, vol. 44(1), pages 1035-1043.
    14. Eyidogan, Muharrem & Canka Kilic, Fatma & Kaya, Durmus & Coban, Volkan & Cagman, Selman, 2016. "Investigation of Organic Rankine Cycle (ORC) technologies in Turkey from the technical and economic point of view," Renewable and Sustainable Energy Reviews, Elsevier, vol. 58(C), pages 885-895.
    15. Wang, Xiao-Qiong & Li, Xiao-Ping & Li, You-Rong & Wu, Chun-Mei, 2015. "Payback period estimation and parameter optimization of subcritical organic Rankine cycle system for waste heat recovery," Energy, Elsevier, vol. 88(C), pages 734-745.
    16. Guo, Jiangfeng & Huai, Xiulan, 2012. "Optimization design of recuperator in a chemical heat pump system based on entransy dissipation theory," Energy, Elsevier, vol. 41(1), pages 335-343.
    17. Kaluri, Ram Satish & Basak, Tanmay, 2011. "Entropy generation due to natural convection in discretely heated porous square cavities," Energy, Elsevier, vol. 36(8), pages 5065-5080.
    18. Utlu, Zafer, 2015. "Investigation of the potential for heat recovery at low, medium, and high stages in the Turkish industrial sector (TIS): An application," Energy, Elsevier, vol. 81(C), pages 394-405.
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    20. Dal Magro, Fabio & Jimenez-Arreola, Manuel & Romagnoli, Alessandro, 2017. "Improving energy recovery efficiency by retrofitting a PCM-based technology to an ORC system operating under thermal power fluctuations," Applied Energy, Elsevier, vol. 208(C), pages 972-985.
    21. Shu, Gequn & Zhao, Jian & Tian, Hua & Liang, Xingyu & Wei, Haiqiao, 2012. "Parametric and exergetic analysis of waste heat recovery system based on thermoelectric generator and organic rankine cycle utilizing R123," Energy, Elsevier, vol. 45(1), pages 806-816.
    22. Roy, J.P. & Mishra, M.K. & Misra, Ashok, 2011. "Performance analysis of an Organic Rankine Cycle with superheating under different heat source temperature conditions," Applied Energy, Elsevier, vol. 88(9), pages 2995-3004.
    23. Mehrgoo, Morteza & Amidpour, Majid, 2017. "Constructal design and optimization of a dual pressure heat recovery steam generator," Energy, Elsevier, vol. 124(C), pages 87-99.

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