Performance analysis of activated carbon + HFC-134a adsorption coolers

Banker, ND and Srinivasan, K and Prasad, M (2004) Performance analysis of activated carbon + HFC-134a adsorption coolers. In: Carbon, 42 (1). pp. 117-127.

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Abstract

The purpose of this paper is to present the results of performance analysis of a heat driven continuous vapor adsorption refrigerator with activated carbon as the adsorbent and 1,1,1,2-tetra.uoroethane (HFC-134a) as the refrigerant. A set of four adsorption cells takes on the role of the mechanical compressor in the conventional vapor compression refrigeration (VCR) system. Three specimens of activated charcoal under various packing densities were investigated. A parametric analysis was carried out with several evaporating,condensing/adsorbing and desorbing temperatures which are typical operating conditions catered to by HFC- 134a. A new integrated relative performance evaluation scheme is proposed. It uses the maximum cycle uptake di.erence as a factor against which the coe.cient of performance (COP) and exergetic e.ciency are evaluated. It is shown that there is an optimal set of operating conditions wherein the exergetic e.ciency is the maximum. A major part of the thermal energy input is for sensible heating of the compressor body.

Item Type:	Journal Article
Publication:	Carbon
Publisher:	Elsevier
Additional Information:	The copyright of this article belongs to Elsevier.
Keywords:	A. Activated carbon;C. Thermodynamic analysis;D. Adsorption properties
Department/Centre:	Division of Mechanical Sciences > Mechanical Engineering
Date Deposited:	02 Jun 2006
Last Modified:	19 Sep 2010 04:28
URI:	http://eprints.iisc.ac.in/id/eprint/7400

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