Heat pump using liquid ammoniated ammonium chloride, and thermal

Details Heat pump using liquid ammoniated ammonium chloride, and thermal Heat pump using liquid ammoniated ammonium chloride, and thermal

1981-07-29

1983-06-07

King, Lloyd L.

Refrigeration

Processes

Evaporation induced by sorption

252 69, 622351, F25B 1500

Patent

active

043865011

ABSTRACT:
A thermochemical heat pump/energy storage system using a liquid ammoniated salt, that is, a salt complexed or reacted with ammonia, is described. The system, which can be used for heating or cooling an enclosure either in a batch operation or continuously, provides energy storage for both heating and cooling functions. The energy is stored predominantly as chemical energy which has substantially no limit on the period during which it may be stored. A pumpable liquid ammoniated absorbent formed by chemically combining about equimolar amounts of ammonia with ammonium chloride ("low ammoniate"), can be further ammoniated to form a "high ammoniate" containing about 3 moles of ammonia. The high ammoniate is desorbed at a heat source temperature below 100.degree. C. available from a geothermal well or the like, and preferably at a heat source temperature below 80.degree. C. available from a solar collector, a feature which is especially well-adapted for the use of solar and geothermal heat to provide cooling in a residential application. Refrigeration may be provided for commercial use with low temperature waste process streams which are now an economic burden on industry because they are unusable profitably as a heat source.

REFERENCES:
patent: 1961890 (1934-06-01), Miller et al.
patent: 2184993 (1939-12-01), Coons
patent: 2185040 (1939-12-01), Smith et al.
patent: 2986525 (1961-05-01), Hughes
patent: 3520812 (1970-07-01), Ecklund

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