SOLAR ABSORPTION HEAT TRANSFORMER APPLICATIONS TO ABSORPTION REFRIGERATING MACHINES

This paper concerns the study of a two-stage vapour absorption system (heat transformer and refrigerating machine) employing the refrigerant absorbent combinations of LiBr-H2O and NH3-H2O successively. The syst em consists of coupling the previous absorption cycles so that the fir st-stage absorber produces heating water to circulate in the generator of the second stage. The performances of a solar installation (two st age system plus solar collector) had been tested in Rabat (Morocco). I t is found that the system can be operated at lower hot source tempera tures and, thus, it can be supplied either from flat plate collectors or from thermal effluents.