Management of dairy plants . the water with air during the freezingprocess. ABSORPTION SYSTEM General Principles. — This system of refrigeration is basedon the fact that water has the power of absorbing variousvapors having a low boiling point, and that such vapors areagain readily separated from the water by heating the liquid. In reality, there is much similarity between the compressionsystem and the absorption system. Common to both are thecondenser and the expansion coils, including the brine tank andthe entire circulating system. In the absorption system thereis a pump, but no compressor.
Management of dairy plants . the water with air during the freezingprocess. ABSORPTION SYSTEM General Principles. — This system of refrigeration is basedon the fact that water has the power of absorbing variousvapors having a low boiling point, and that such vapors areagain readily separated from the water by heating the liquid. In reality, there is much similarity between the compressionsystem and the absorption system. Common to both are thecondenser and the expansion coils, including the brine tank andthe entire circulating system. In the absorption system thereis a pump, but no compressor. The generator, the ammoniareceiver, and the absorber are also important parts. In addi-tion, we have the analyzer, the exchanger, the dehydrator, andother parts of less importance which are added primarily tomake the system more complete in its operation. Operation. — This system may be operated without anygreat amount of steam, the only steam required being that usedfor the pump and the exhaust steam for the MECHANICAL REFRIGERATION 83 The strong-aqua tank is charged with aqua ammonia con-taining 29 1/2 per cent of anhydrous ammonia. The ammonia ispumped from the strong-ammonia tank to the generator, whereit is heated and the anhydrous ammonia distilled off. Thisammonia gas enters the condenser where it is condensed, andfrom there it enters the ammonia receiver as liquid the receiver, the ammonia is admitted through the ex-pansion valve to the brine cooler, where it is again convertedinto a gas, taking up heat from the brine. From the brinecooler, the gas enters the absorber to be reabsorbed by thewater. The absorber and the generator are so connected thatthe water in the generator, from which the anhydrous ammoniahas been distilled, is again transferred to the absorber andthus the cycle is completed. The absorption system has not been adopted so generally asthe compression system, and is used for plants of large capacityonly. Plants of less than
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectdairyin, bookyear1921
