Performance of a low- temperature NH3 H2O absorption-refrigeration system

E.D. Rogdakis and K.A. Antonopoulos

Energy, 1992, vol. 17, issue 5, 477-484

Abstract: Conventional absorption-refrigeration systems cannot produce temperatures below −20 °C. We have studied a two-stage NH3 H2O absorption-refrigeration system, which may be used to produce refrigeration temperatures as low as −70 °C. This system operates at three pressure levels so that the heat released by the high-pressure condenser and by the medium-pressure absorber are rejected to the ambient, while heat released by the low-pressure absorber is received at the medium-pressure evaporator. A method and a corresponding computer code have been developed to simulate the operation of the proposed system. Employing this method, we predict for 10 °C ambient temperature that the theoretical coefficient of performance ranges from 20 to 65%, while the lowest temperatures range from −70 to −30 °C; the corresponding theoretical refrigeration load ranges from 300 to 1100 kJ/kg of refrigerant produced in the generator.

Date: 1992
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Citations: View citations in EconPapers (7)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:17:y:1992:i:5:p:477-484

DOI: 10.1016/0360-5442(92)90083-C

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