Exergy analysis for stationary flow systems with several heat exchange temperatures | Zendy

Lampinen Markku J. | Zendy; Heikkinen Merja A. | Zendy

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Exergy analysis for stationary flow systems with several heat exchange temperatures

Author(s) -

Lampinen Markku J.,

Heikkinen Merja A.

Publication year - 1995

Publication title -

international journal of energy research

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.808

H-Index - 95

eISSN - 1099-114X

pISSN - 0363-907X

DOI - 10.1002/er.4440190506

Subject(s) - exergy , carnot cycle , brayton cycle , heat exchanger , heat pump , thermodynamics , exergy efficiency , absorption heat pump , flow (mathematics) , mechanics , control theory (sociology) , process engineering , mathematics , engineering , computer science , physics , control (management) , artificial intelligence

A thermodynamic theory of exergy analysis for a stationary flow system having several heat inputs and outputs at different temperature levels is presented. As a new result a relevant reference temperature of the surroundings is derived for each case. Also a general formula which combines exergy analysis with a modified Carnot efficiency is derived. The results are illustrated by numerical examples for mechanical multi‐circuit heat pump cycles, for a Brayton process and for an absorption heat pump.

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