Chemical and Adsorption Heat Pumps: Cycle Efficiency and Boundary Temperatures Full article
Journal |
Theoretical Foundations of Chemical Engineering
ISSN: 0040-5795 , E-ISSN: 1608-3431 |
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Output data | Year: 2008, Volume: 42, Number: 6, Pages: 873-881 Pages count : 9 DOI: 10.1134/S0040579508060092 | ||
Tags | Heat Pump; Deep Freezing; Condenser Temperature; Evaporator Temperature; External Heat Source | ||
Authors |
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Affiliations |
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Funding (2)
1 | Russian Foundation for Basic Research | 08-08-90016 |
2 | Russian Foundation for Basic Research | 07-08-13620 |
Abstract:
The efficiency of an ideal three-temperature (3T) cycle of a chemical heat pump (CHP) is considered.
For a reversible CHP 3T cycle, the maximal efficiency can be determined using the ratio of the heat of
evaporation of the working fluid and the heat of the chemical reaction or using the boundary temperatures of
the cycle. The boundary temperatures of the reversible CHP cycle are not independent variables relative to each
other. As they are related by the Clausius–Clapeyron equation for the equilibrium of the pure fluid and by the
van’t Hoff equation for the chemical reaction, the choice of one of these temperatures completely determines
the two others. Comparison of the efficiencies of the CHP cycle and the cycle of an adsorption heat pump (AHP)
shows that the CHP efficiency can theoretically reach the Carnot-cycle efficiency whereas the AHP efficiency
is always less than the Carnot-cycle efficiency because of the generation of entropy due to the transfer of heat
to (from) the adsorber at a finite temperature difference. The minimal temperature of the external heat source
needed for the operation of the CHP (AHP) cycle, the minimal evaporator temperature, and the maximal condenser
temperature are calculated. These temperatures are determined for CHP (AHP) applications such as
heating, air conditioning, ice production, and deep freezing in different climatic zones.
Cite:
Aristov Y.I.
Chemical and Adsorption Heat Pumps: Cycle Efficiency and Boundary Temperatures
Theoretical Foundations of Chemical Engineering. 2008. V.42. N6. P.873-881. DOI: 10.1134/S0040579508060092 WOS Scopus РИНЦ
Chemical and Adsorption Heat Pumps: Cycle Efficiency and Boundary Temperatures
Theoretical Foundations of Chemical Engineering. 2008. V.42. N6. P.873-881. DOI: 10.1134/S0040579508060092 WOS Scopus РИНЦ
Original:
Аристов Ю.И.
Химические и адсорбционные теплотрансформаторы: эффективность и граничные температуры цикла
Теоретические основы химической технологии. 2008. Т.42. №6. С.676-685. РИНЦ
Химические и адсорбционные теплотрансформаторы: эффективность и граничные температуры цикла
Теоретические основы химической технологии. 2008. Т.42. №6. С.676-685. РИНЦ
Dates:
Submitted: | Aug 30, 2007 |
Published print: | Dec 1, 2008 |
Published online: | Dec 14, 2008 |
Identifiers:
Web of science | WOS:000261753800009 |
Scopus | 2-s2.0-57649150156 |
Elibrary | 13588193 |
Chemical Abstracts | 2008:1496744 |
Chemical Abstracts (print) | 150:193892 |
OpenAlex | W2091769113 |