PERFORMANCE AND VIABILITY OF A H2O/LiBr ABSORPTION HEAT TRANSFORMER DRIVEN BY SOLAR ENERGY FOR HEATING APPLICATIONS

摘要

In solar assisted plants, heating can be supplied directly by thermal solar collectors if enoughrnsolar radiation is available or using a thermally driven heat pump. The use of a heat pump requiresrnthe consumption of driving heat at high temperature usually generated in a boiler. Instead,rna solar driven Absorption Heat Transformer (AHT) could be used to produce heatingrnwithout any consumption of fossil fuel other than that required to generate the electricity torndrive the solution pumps. The objective of this paper is the development of a detailed steadystaternmodel for the simulation of a small-scale water/LiBr AHT integrated in a Flat Plate solarrncollectors plant. The developed AHT performance model is integrated in a Trnsys solar plantrnmodel to evaluate the system energy performance for a whole heating season in several climaticrnconditions. The results are compared with those using a conventional boiler heating systemrnin terms of primary energy and economic savings to study the technical and economic viabilityrnof the proposed system.