Title: Exergy analysis of an adsorption refrigeration machine

Authors: Elena Eugenia Vasilescu, Rahal Boussehain, Michel Louis Feidt

Addresses: Department of Thermodynamics, Politehnica University of Bucharest, Splaiul Independentei, No. 313, 060042, Bucharest, Romania. ' LEMTA &ndsh; Henri Poicare University, NANCY I, 2 Avenue de la Foret de Haye, 54504, Vandoeuvre-Les-Nancy Cedex, France. ' LEMTA – Henri Poicare University, NANCY I, 2 Avenue de la Foret de Haye, 54504, Vandoeuvre-Les-Nancy Cedex, France

Abstract: This paper presents an original model of exergy analysis of an adsorption refrigeration machine, connected with irreversible processes of heat and mass transfer during the functioning stages. The difficulty of such approach is related to the non-stationary character of the thermodynamic processes. Thus, the highest destruction of exergy appears in the adsorption and desorption processes due to the heat transfer-mass transfer double irreversibility. A study of parametric sensibility reveals antagonistic tendencies of variation of the coefficient of performance and of the exergy efficiency of the system with increased temperature of the low external heat source and high external heat source.

Keywords: refrigeration systems; adsorption; energy; exergy; coefficient of performance; COP; exergy efficiency.

DOI: 10.1504/IJEX.2007.012066

International Journal of Exergy, 2007 Vol.4 No.2, pp.197 - 215

Published online: 16 Jan 2007 *

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