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Title: Entropy production analysis and experimental confirmation of absorption systems
Authors: Chua, H.T. 
Gordon, J.M.
Ng, K.C. 
Han, Q.
Keywords: Absorption
Heat pump
Heat transformer
Refrigerating system
Issue Date: 1997
Citation: Chua, H.T.,Gordon, J.M.,Ng, K.C.,Han, Q. (1997). Entropy production analysis and experimental confirmation of absorption systems. International Journal of Refrigeration 20 (3) : 179-190. ScholarBank@NUS Repository.
Abstract: Absorption chillers, heat pumps and heat transformers exploit thermal power input to satisfy a variety of refrigeration and heating applications, as well as to boost the temperature of low-grade heat. Can one arrive at accurate predictions of system performance with a simple analytic irreversible thermodynamic model? In capturing the essential physics of the problem, that model would be required to provide a predictive and diagnostic tool and to permit determination of optimal absorption system operating conditions. We derive such a model and check its validity against experimental data and computer simulation results from a variety of commercial absorption units. We reinforce the observation that commercial units appear to have evolved empirically such that maximum efficiency is realized under design conditions. The failure of a host of previously-published endo-reversible thermodynamic models to account for fundamental qualitative features and accurate predictions of system behavior is documented with computer simulation results and experimental performance data. © 1997 Elsevier Science Ltd and IIR.
Source Title: International Journal of Refrigeration
ISSN: 01407007
Appears in Collections:Staff Publications

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