Chemical and Adsorption Heat Pumps: Comments on the Second Law Efficiency Full article
Journal |
Chemical Engineering Journal
ISSN: 1385-8947 , E-ISSN: 1873-3212 |
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Output data | Year: 2008, Volume: 136, Number: 2-3, Pages: 419-424 Pages count : 6 DOI: 10.1016/j.cej.2007.07.026 | ||
Tags | Adsorption, Ammonia, Chemical heat pump, COP, Cycle analysis, Methanol, Second law efficiency, Solid sorption, Solid-gas reaction, Water | ||
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Abstract:
The thermodynamic analysis of an ideal cycle of chemical and adsorption heat pumps was performed in order to compare two definitions of the cycle efficiency used in literature and estimate the maximal efficiency that can be reached for particular non-regenerative cycle. It was shown that the efficiency equal to the Carnot efficiency can be, in principle, obtained for a chemical heat pump that results from a monovariant equilibrium of a gas–solid reaction. This was confirmed for various chemical reactions between salts and ammonia (or water). For a divariant equilibrium in adsorption heat pump there is inevitable degradation of the efficiency due to the thermal entropy production caused by the external thermal coupling. Simple estimation of the efficiency reduction is suggested
Cite:
Sharonov V.E.
, Aristov Y.I.
Chemical and Adsorption Heat Pumps: Comments on the Second Law Efficiency
Chemical Engineering Journal. 2008. V.136. N2-3. P.419-424. DOI: 10.1016/j.cej.2007.07.026 WOS Scopus РИНЦ
Chemical and Adsorption Heat Pumps: Comments on the Second Law Efficiency
Chemical Engineering Journal. 2008. V.136. N2-3. P.419-424. DOI: 10.1016/j.cej.2007.07.026 WOS Scopus РИНЦ
Dates:
Submitted: | Feb 8, 2007 |
Accepted: | Jul 6, 2007 |
Published online: | Jul 12, 2007 |
Published print: | Mar 1, 2008 |
Identifiers:
Web of science | WOS:000254794300043 |
Scopus | 2-s2.0-38649116946 |
Elibrary | 13584905 |
Chemical Abstracts | 2008:143835 |
Chemical Abstracts (print) | 148:310486 |
OpenAlex | W2125698239 |