Abstract
A low thermal diffusivity of adsorption beds induces a large thermal gradient across cylindrical adsorbers used in adsorption cooling cycles. This reduces the concentration difference across which a thermal compressor operates. Slow adsorption kinetics in conjunction with the void volume effect further diminishes throughputs from those adsorption thermal compressors. The problem can be partially alleviated by increasing the desorption temperatures. The theme of this paper is the determination the minimum desorption temperature required for a given set of evaporating/condensing temperatures for an activated carbon + HFC 134a adsorption cooler. The calculation scheme is validated from experimental data. Results from a parametric analysis covering a range of evaporating/condensing/desorption temperatures are presented. It is found that the overall uptake efficiency and Carnot COP characterize these bounds. A design methodology for adsorber sizing is evolved.
| Original language | English |
|---|---|
| Pages (from-to) | 551-559 |
| Number of pages | 9 |
| Journal | Applied Thermal Engineering |
| Volume | 51 |
| Issue number | 1-2 |
| DOIs | |
| Publication status | Published - Jan 1 2013 |
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All Science Journal Classification (ASJC) codes
- Energy Engineering and Power Technology
- Industrial and Manufacturing Engineering
Cite this
Realistic minimum desorption temperatures and compressor sizing for activated carbon + HFC 134a adsorption coolers. / Srinivasan, Kandadai; Dutta, Pradip; Saha, Bidyut Baran; Ng, Kim Choon; Prasad, Madhu.
In: Applied Thermal Engineering, Vol. 51, No. 1-2, 01.01.2013, p. 551-559.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Realistic minimum desorption temperatures and compressor sizing for activated carbon + HFC 134a adsorption coolers
AU - Srinivasan, Kandadai
AU - Dutta, Pradip
AU - Saha, Bidyut Baran
AU - Ng, Kim Choon
AU - Prasad, Madhu
PY - 2013/1/1
Y1 - 2013/1/1
N2 - A low thermal diffusivity of adsorption beds induces a large thermal gradient across cylindrical adsorbers used in adsorption cooling cycles. This reduces the concentration difference across which a thermal compressor operates. Slow adsorption kinetics in conjunction with the void volume effect further diminishes throughputs from those adsorption thermal compressors. The problem can be partially alleviated by increasing the desorption temperatures. The theme of this paper is the determination the minimum desorption temperature required for a given set of evaporating/condensing temperatures for an activated carbon + HFC 134a adsorption cooler. The calculation scheme is validated from experimental data. Results from a parametric analysis covering a range of evaporating/condensing/desorption temperatures are presented. It is found that the overall uptake efficiency and Carnot COP characterize these bounds. A design methodology for adsorber sizing is evolved.
AB - A low thermal diffusivity of adsorption beds induces a large thermal gradient across cylindrical adsorbers used in adsorption cooling cycles. This reduces the concentration difference across which a thermal compressor operates. Slow adsorption kinetics in conjunction with the void volume effect further diminishes throughputs from those adsorption thermal compressors. The problem can be partially alleviated by increasing the desorption temperatures. The theme of this paper is the determination the minimum desorption temperature required for a given set of evaporating/condensing temperatures for an activated carbon + HFC 134a adsorption cooler. The calculation scheme is validated from experimental data. Results from a parametric analysis covering a range of evaporating/condensing/desorption temperatures are presented. It is found that the overall uptake efficiency and Carnot COP characterize these bounds. A design methodology for adsorber sizing is evolved.
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UR - http://www.scopus.com/inward/citedby.url?scp=84868254919&partnerID=8YFLogxK
U2 - 10.1016/j.applthermaleng.2012.09.028
DO - 10.1016/j.applthermaleng.2012.09.028
M3 - Article
AN - SCOPUS:84868254919
VL - 51
SP - 551
EP - 559
JO - Applied Thermal Engineering
JF - Applied Thermal Engineering
SN - 1359-4311
IS - 1-2
ER -