Exergy analysis and performance enhancement of isopropanol-acetone-hydrogen chemical heat pump

2017, Volume 11, Issue 4

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Frontiers in Energy >> 2017, Volume 11, Issue 4 doi: 10.1007/s11708-017-0508-0

Exergy analysis and performance enhancement of isopropanol-acetone-hydrogen chemical heat pump

Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100190, China

Accepted： 2017-11-15 Available online：2017-12-14

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Abstract

Exergy loss analysis was conducted to identify the irreversibility in each component of the isopropanol-acetone-hydrogen chemical heat pump (IAH-CHP). The results indicate that the highest irreversibility on a system basis occurs in the distillation column. Moreover, the effect of operating parameters on thermodynamic performances of the IAH-CHP was studied and the optimal conditions were obtained. Finally, the potential methods to reduce the irreversibility of the IAH-CHP system were investigated. It is found that reactive distillation is apromising alternative. The enthalpy and exergy efficiency of the IAH-CHP with reactive distillation increases by 24.1% and 23.2%, respectively.

Keywords

waste heat reuse ; chemical heat pump ; exergy analysis ; isopropanol

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