THERMODYNAMIC ANALYSIS AND DESIGN-DATA FOR A DOUBLE-EFFECT ABSORPTION HEAT-PUMP SYSTEM USING 4 WORKING PAIRS

Performance analysis of a double-effect absorption heat pump system has been done for water-four working pairs (or mixture) by computer simulation. The coefficient of performance and mass flow ratio are investigated to compare these aqueous solutions [water LiCl, water-LiBr-LiSCN, water-LiCl-CaCl2-Zn(NO3)2] which was developed for only cooling, with conventional water-LiBr solution, based on mass, material and heat balance equations for each part. From this analysis, it is found that the performances of the new aqueous solutions are better than that of LiBr-water solution not only in cooling systems, but also in heating systems, although the operating temperature ranges of these new aqueous solutions are very narrow in heating. Theoretical thermodynamic performance data can be used and are given here by design data.