EXERGY ANALYSIS AND EXPERIMENTAL STUDY OF HEAT PUMP COUPLED REVERSIBLY USED COOLING TOWER IN LOW-TEMPERATURE HEATING MODE

摘要

This paper presents a comprehensive exergy analysis of R22 circuit of the heat pump coupled reversibly used cooling tower for building heating mode. The purpose is to search out the key potential energy saving components. The analytical formulae of the exergy destruction, exergy efficiency and exergy loss coefficient are derived, respectively. The results show that in the whole heat pump system the location of maximum exergy destruction is the condenser, so that the heat exchanger should be primarily improved. The results may provide guidelines for the design and optimization of a practical reversibly used cooling tower heating system using a heat pump.