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Date of Publication:2022-10-04

Journal:大连理工大学学报

Affiliation of Author(s):化工学院

Issue:3

Page Number:333-337

ISSN No.:1000-8608

Abstract:Exergy analysis of a double absorption heat transformers with a new solution cycle is carried out based on the thermodynamic properties of the aqueous solution of lithium bromide and the second law of thermodynamics. The results show that the new solution cycle has not only a wider available working range of absorption or evaporation temperature in absorbing evaporator, but also a higher exergy efficiency than those of the common cycle reported in literatures. When heat resource temperature, condense temperature and absorber temperature are 70, 25 and 150��C respectively, the exergy efficiency of the common solution cycle is 56.2%, while it is 65.7% for new solution cycle. When the second solution heat exchanger is set between the absorbing evaporator and generator, higher exergy efficiency of 69.6% could be obtained further. The effects of some operating parameters on exergy efficiency are also discussed.

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