Thermodynamic analysis of R22-DMF compression-absorption heat pump

The performance of the compression-absorption heat pump working on R22-Dimethyl formamide (DMF) is studied through a thermodynamic analysis. The parameters varied are the compression ratio and the operating temperatures at the desorber and absorber. The heating coefficient of performance, exergetic efficiency, concentration difference and the circulation ratio are computed. At certain operating conditions COPs as high as 6 and temperature lifts as high as 60°C can be achieved. Correlations are presented to facilitate quick estimation of performance chatacteristics. © 1989.