SOLAR COOLING WITH AN AMMONIA-WATER-ABSORPTION REFRIGERATION MACHINE

摘要

The invention relates to a single-stage ammonia-water absorption refrigeration machine in the batch process consisting of a generator (1) having a pressure reducer (29) and solution concentration optimization (3), absorber (14), condenser (25), evaporator (24), wherein the generator (1) together with a recooled inlet vessel (3) and the pressure reducer form a structural and pressure unit, in which the pressure reducer (29), at the start of each operating cycle, reduces the generator pressure below the absorber pressure, in such a manner that, from there, via a nonreturn valve (69), solution flows into the recooled generator inlet vessel (3), fills it, and from there the solution gradually flows, following gravity, into a hot zone (1) which, in particular, consists of a preheating zone (11) that is heated by the absorber (18) and an externally heated hot zone (12), where ammonia vapour is formed, which flows by a siphon line (8) from the bottom through the residual solution still situated in the generator inlet vessel (3) and where, from the top end of this generator inlet vessel, a gas line leads through a nonreturn valve (27) to the condenser (25), while the boiled solution flowing out of the hot zone (1) flows through the pressure reducer (29) and through a nonreturn valve (40) and also a pressure reduction stage (17) for the absorber (14).