Efficiencies of exergy transductions

Mohey Hussein, R. J. Wood, P. W. O'Callaghan and S. D. Probert

Applied Energy, 1980, vol. 6, issue 5, 384 pages

Abstract: Exergy is conserved in thermodynamically reversible heat engines and heat pumps. Using a reversible heat engine to stimulate a reversible heat pump, available power and exergy may be exchanged, the total amount of exergy being conserved. For such a combined system, either more heat may be released at a lower temperature or energy may be consumed to achieve a local entropy reduction. From such an analysis, it becomes apparent that the introduction of efficient systems to conserve exergy in cascaded heating applications should be given high priority.

Date: 1980
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