The advantage of using a distillation tower in an ammonia-water absorptioncycle for refrigeration

With the available commercial software (ChemCAD version-3.30), the computer simulation of an ammonia-water absorption cycle for refrigeration has been carried out in the present paper. It is found that, because of the capabil ity of reducing the water contents in the vapor phase of ammonia refrigeran t, the distillation tower can successfully replace the generator and conseq uently increases the COP of the cycle. An illustrative study is given on a general equilibrium stage tower with a partial condenser. From the simulati on results, it is found that this equilibrium stage tower can provide a goo d separation effect for those water contents in the vapor phase of refriger ant, and therefore can increase the COP of the cycle efficiently.