| 摘要 |
A cooling machine (9), useful for air conditioning, refrigeration, ice production, or the like, based on the ammonia absorption thermodynamic cycle, and operated by a heat sour of relatively low temperature, as for example a set of solar heat collectors (23), wherein the generator (10) of the cooling machine (9) comprises a first vessel (14) through which the ammonia solution is circulated and is subject to separation of ammonia from water in the solution by raising its temperature through heat exchange relationship with a stream of a hot liquid, heated in the set of solar collectors (23). The generator (10) also comprises a second vessel (12) coaxially surrounding the first vessel (14); whereby the walls of said first and second vessels define a hot water circulation chamber (24). The first vessel has a plurality of staggered series of heat transfer fins (16) of predetermined dimensions so as to optimize the heat transfer from said hot liquid to the ammonia solution in the generator.
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