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Entropy 2010, 12(4), 859-877; doi:10.3390/e12040859

Air Conditioning Systems from a 2nd Law Perspective

Dipartimento di Ingegneria Industriale e Meccanica, Viale A. Doria 6, 95125 Catania, Italy
Received: 18 December 2009 / Revised: 16 February 2010 / Accepted: 6 April 2010 / Published: 13 April 2010
(This article belongs to the Special Issue Exergy: Analysis and Applications)
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In this paper exergy analysis is used to assess the performance of the three most common air conditioning plant schemes: all-air, dual-duct and fan-coil systems. The results are presented in terms of flow diagrams to provide a clear picture of the exergy flow across the systems. The most relevant outcomes are that the air cooling and dehumidification is the process most responsible for the exergy loss and that the exergy efficiency of the overall systems is rather low; thus the quest for more appropriate technologies. Solar-assisted air-conditioning is also discussed, outlining the possibilities and the constraints.
Keywords: air-conditioning; exergy analysis; solar cooling air-conditioning; exergy analysis; solar cooling
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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Marletta, L. Air Conditioning Systems from a 2nd Law Perspective. Entropy 2010, 12, 859-877.

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