Experimental Comparison of Ammonia-Water and Ammonia-Water Lithium Bromide Mixtures in an Absorption Heat Pump.
Experimental Comparison of Ammonia-Water and
Ammonia-Water Lithium Bromide Mixtures in an Absorption
McLinden, M. O.; Radermacher, R.
HI-85-36 No. 4;
ASHRAE Technical Data Bulletin (p. 52-60) AND ASHRAE
Transactions, Vol. 91, No. 2B, 1837-1846, June 1985.
heat pumps; ammonia; water; lithium; mixtures;
absorption; bromide; pressure; temperature refrigerants;
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
predicted in the literature.