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Hierarchical Decomposition Thermodynamic Approach for the Study of Solar Absorption Refrigerator Performance
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Entropy 2016, 18(4), 107; doi:10.3390/e18040107

Thermodynamic Analysis of the Irreversibilities in Solar Absorption Refrigerators

1
GEPEA-UMR CNRS 6144 Laboratory, École des Mines de Nantes, Energetic Systems and Environment Department, 4 Alfred Kastler Street BP 20722, 44307 Nantes, France
2
Applied Thermodynamics Research Unit (99/UR/11-21), National Engineering School of Gabès, Omar Ibn Elkhattab Street, 6029 Gabès, Tunisia
3
LAMIH CNRS UMR 8201, Department of Mechanics, Valenciennes University, Campus Mont Houy, F-59313 Valenciennes Cedex 9, France
4
LEMTA, CNRS UMR 7563, ENSEM-INPL, Université de Lorraine, 2 Avenue de la Forêt of Haye BP 160, 54504 Vandoeuvre-lès-Nancy, France
*
Author to whom correspondence should be addressed.
Academic Editor: Kevin H. Knuth
Received: 29 October 2015 / Revised: 21 March 2016 / Accepted: 22 March 2016 / Published: 24 March 2016
(This article belongs to the Special Issue Entropy Generation in Thermal Systems and Processes 2015)
View Full-Text   |   Download PDF [1146 KB, uploaded 24 March 2016]   |  

Abstract

A thermodynamic analysis of the irreversibility on solar absorption refrigerators is presented. Under the hierarchical decomposition and the hypothesis of an endoreversible model, many functional and practical domains are defined. The effect of external heat source temperature on the entropy rate and on the inverse specific cooling load (ISCL) multiplied by the total area of the refrigerator A/Qe are studied. This may help a constructor to well dimension the solar machine under an optimal technico-economical criterion A/Qe and with reasonable irreversibility on the refrigerator. The solar concentrator temperature effect on the total exchanged area, on the technico-economical ratio A/Qe, and on the internal entropy rate are illustrated and discussed. The originality of these results is that they allow a conceptual study of a solar absorption refrigeration cycle. View Full-Text
Keywords: irreversibility; entropy; inverse specific cooling load; technico-economical criterion irreversibility; entropy; inverse specific cooling load; technico-economical criterion
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Berrich Betouche, E.; Fellah, A.; Ben Brahim, A.; Aloui, F.; Feidt, M. Thermodynamic Analysis of the Irreversibilities in Solar Absorption Refrigerators. Entropy 2016, 18, 107.

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