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Absorption heat transformers: Sensitivity study to answer existing discrepancies

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  • Wakim, Michel
  • Rivera-Tinoco, Rodrigo

Abstract

This work aims at bringing an analysis upon the heterogeneity and the accuracy of results expressed by authors studying absorption heat transformers (AHTs). Existing work is based on specific operating conditions for specific applications, which shows that detailed thermodynamic and sensitivity studies for a wide range of operating conditions are lacking. Hence, this work shows the impact of wide ranges of operating temperature values upon exergy destruction, COP and performance variations. Main results show a maximum in performance for a given working pair as a function of temperatures and refrigerant content in the fluids at the generator, absorber and evaporator. Exergy destruction in generators and absorbers is confirmed, however, it is for the first time shown that there is a counterbalancing effect between these two components of the AHT. This effect explains why conclusions of works published on AHT seem to lead to contradictory pathways towards optimization.

Suggested Citation

  • Wakim, Michel & Rivera-Tinoco, Rodrigo, 2019. "Absorption heat transformers: Sensitivity study to answer existing discrepancies," Renewable Energy, Elsevier, vol. 130(C), pages 881-890.
    • Handle: RePEc:eee:renene:v:130:y:2019:i:c:p:881-890
    DOI: 10.1016/j.renene.2018.06.111
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    References listed on IDEAS

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