Activated carbon + HFC 134a based two stage thermal compression adsorption refrigeration using low grade thermal energy sources

Banker, ND and Prasad, M and Dutta, P and Srinivasan, K (2009) Activated carbon + HFC 134a based two stage thermal compression adsorption refrigeration using low grade thermal energy sources. In: Applied Thermal Engineering, 29 (11-12). pp. 2257-2264.

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Abstract

A thermodynamic analysis is presented for the two stage thermal compression process for an adsorption refrigeration cycle with HFC-134a as the working fluid and activated carbon as the adsorbent. Three specimens of varying achievable packing densities were evaluated. The influence of evaporating, condensing/adsorption and desorption temperatures was assessed through three performance indicators, namely,the uptake efficiency, the coefficient of performance and the exergetic efficiency. Conditions under which a two stage thermal compression process performs better than the single stage unit are identified. It is concluded that two stage thermal compression will be a viable proposition when the heat source temperature is low or when adsorption characteristics are weak or when adequate packing densities are difficult to realize. (C) 2008 Elsevier Ltd. All rights reserved.

Item Type:	Journal Article
Publication:	Applied Thermal Engineering
Publisher:	Elsevier Science
Additional Information:	Copyright of this article belongs to Elsevier Science.
Keywords:	Adsorption; Activated carbon; Refrigeration; HFC 134a; Thermal compression
Department/Centre:	Division of Mechanical Sciences > Mechanical Engineering
Date Deposited:	25 Sep 2009 10:18
Last Modified:	19 Sep 2010 05:45
URI:	http://eprints.iisc.ac.in/id/eprint/23287

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