Rotary trisorption heat pump

Heat exchange – Intermediate fluent heat exchange material receiving and... – Reversible chemical reaction

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165 86, 62478, 62480, F25B 1704

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active

052793591

ABSTRACT:
Apparatus and process are disclosed for sorption heat pumping at high efficiency in a smooth and continuous manner using a multiplicity of intermittent cycle triplex sorption modules. The hermetically sealed trisorption modules, each of which contains at least two solid sorbents, are free of pumps, valves, restrictors, or any similar devices for flow control of refrigerant or sorbent. The preferred refrigerant is ammonia and the preferred sorbents are the solid type with monovariant equilibrium, e.g., BaCl.sub.2, SrCl.sub.2, CaCl.sub.2, MnCl.sub.2, FeCl.sub.2 and SrBr.sub.2. The apparatus is preferably adapted for residential or small-scale commercial space-conditioning applications, and operates at double-effect efficiency in both the heating and cooling modes without inter-module heat transfer.

REFERENCES:
patent: 4574874 (1986-03-01), Duran
patent: 4660629 (1987-04-01), Maier-Laxhuber
K. H. Richter "Multi-Stage Absorption Refrigeration Systems" Journal of Refrigeration Sep./Oct. 1962, pp. 105-111.
J. C. V. Chinnappa, "Solar Operation of Ammonia-Water Multisty Air Condit. Cycles in Tropics", Solar Energy 1974 pp. 165-170.
Hans Stymme, "Chemical Heat Pumps", Swedish Council for Bldg. Research Summary 52:1982.
Uwe Rockenfeller et al, "Complex Compound Chemical Heat Pumps", Proceedings 9th IETC, Sep. 1987, Houston, pp. 158-164.
M. Lebrun et al, "Coefficients de Performance de Machines a Froid Monoetagees . . . " Proceedings XVIII Int'l Congr. Refrign., Montreal, 1991, p. 567.
K. Speidel et al, "Solar Cooling and Air Conditioning Process Using Chemical Reactions", Proceedings ISES, Denver, Aug. 1991, pp. 1601-1606.

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