Optimum design analysis of a solar-assisted Libr/H2 O absorption system with a flat-plate collector

Abstract

An analytical analysis has been presented to evaluate the performance of a solar-assisted vapour absorption cooling system with a flat-plate absorber plate. The lithium–bromide waterabsorption cycle is used to obsstain the cooling effect. The performance parameters, namelyabsorber plate efficiency, collector efficiency factor, heat removal factor, etc. have been determined with the variation of collector fluid inlet temperature. The cycle coefficient of performance (COP), system COP, refrigerating efficiency of the cycle, and refrigerating efficiency ofthe system are determined analytically. The maximum COP and cooling efficiency for both thecycle and system has been found at an optimal collector fluid inlet temperature. The optimumdesign condition for the variation of different design parameters, such as ambient temperatureand thermal conductivity, has also been studied. Finally, the plate material is found to be aminimum at a particular collector fluid inlet temperature which is an optimum design condition to run the solar-assisted vapour absorption system