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Experimental Comparison of Ammonia-Water and Ammonia-Water Lithium Bromide Mixtures in an Absorption Heat Pump

Published

Author(s)

Mark O. McLinden, R Radermacher

Abstract

The performance of an absorption heat pump (AHP) operating with ammonia-water and ammonia-water-lithium bromide mixtures is compared. The AHP was designed for the ammonia-water system but operated successfully and without modifications with the ternary system. The pressures and most of the temperatures showed only minor differences. The COP of the AHP operating with a ternary mixture having a LiBr/H20 mass ratio of 0.48/0.52 was, on average, 0.05 lower than with the binary system. However, several factors indicated that the refrigerant vapor entering the rectifier had significantly lower water content with the ternary system, as predicted in the literature.
Citation
ASHRAE Transactions
Volume
91
Issue
No. 2B

Keywords

heat pumps, ammonia, water, lithium, mixtures, absorption, bromide, pressure, temperature refrigerants, experiments, mixtures

Citation

McLinden, M. and Radermacher, R. (1985), Experimental Comparison of Ammonia-Water and Ammonia-Water Lithium Bromide Mixtures in an Absorption Heat Pump, ASHRAE Transactions, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=910770 (Accessed July 12, 2024)

Issues

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Created June 1, 1985, Updated February 19, 2017