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

Banker, N. D. ; Prasad, M. ; Dutta, P. ; Srinivasan, K. (2009) Activated carbon + HFC 134a based two stage thermal compression adsorption refrigeration using low grade thermal energy sources Applied Thermal Engineering, 29 (11-12). pp. 2257-2264. ISSN 1359-4311

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Official URL: http://www.sciencedirect.com/science/article/pii/S...

Related URL: http://dx.doi.org/10.1016/j.applthermaleng.2008.11.006

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.

Item Type:Article
Source:Copyright of this article belongs to Elsevier Science.
Keywords:Adsorption; Activated Carbon; Refrigeration; HFC 134a; Thermal Compression
ID Code:80912
Deposited On:02 Feb 2012 09:32
Last Modified:02 Feb 2012 09:32

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