| 摘要 |
An apparatus comprises a plurality of two or more reaction chambers (12, 14, 16, 18), each having a different compound therein comprising a solid reactant adsorbent and a gaseous reactant adsorbe d thereon, each of said compounds having a differ- ent gaseous reactant vapor pressure, substantially independent of the concentration of the gaseous reactant, and having an. as- cending order of gaseous reactant vapor pressure wherein the adsorption temperature of a lower vapor pressure compound at ad- sorption pressure is at lest 8 .degree.C higher than the desorption temperature of the next successive higher vapor pressure compound at desorption pressure, means (17, 19, 52, 54, 56) for directing heat transf er fluid to and from said reaction chambers whereby heat from an exothermic adsorption reaction is directed to a reaction chambe r for driving an endothermic desorption reaction, and heat exchange means for selectively recovering and/or adsorbing heat fro m said reaction chambers, condenser means {26) comprising a single condenser and conduit means (39) for directing gaseous reactant from each of said reaction chambers to said condenser, or two or more condensers, each operating at a different temperature, and evaporator means (24) comprising a single evaporator and conduit means (38) for directing gaseous reactant from said evaporator to each of said reaction chambers, or two or more evaporators, each operating at a different temperature. The gaseous reactant comprises ammonia, water, carbon dioxide, sulfur dioxide, a lower alkanol, akylamine, polyamine, phosphine or polar refrigerant having at least one free electron pair, and the solid reactant comprises an inorganic salt. Other improvements comprise a vapor recuperator (40) for exchanging heat be- tween refrigerant flowing from the reactors to the condenser and from the evaporator to the reactors, and a liquid subcooler (42) for exchanging heat for cooling refrigerant flowing from the condenser (26) with cold vapor leaving the evaporator (24).
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