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

被引:23
作者
Banker, N. D. [1 ]
Prasad, M. [2 ]
Dutta, P. [1 ]
Srinivasan, K. [1 ]
机构
[1] Indian Inst Sci, Dept Mech Engn, Bangalore 560012, Karnataka, India
[2] ISRO Satellite Ctr, Thermal Syst Grp, Bangalore 560017, Karnataka, India
关键词
Adsorption; Activated carbon; Refrigeration; HFC; 134a; Thermal compression; ADSORPTION PARAMETERS; COMPRESSION; PERFORMANCE; CHILLER; HEAT;
D O I
10.1016/j.applthermaleng.2008.11.006
中图分类号
O414.1 [热力学];
学科分类号
摘要
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.
引用
收藏
页码:2257 / 2264
页数:8
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