Investigation of the Performance of Heat Pump Waste Heat Regeneration Runner Dehumidification of Air Conditioning Systems

Abstract

This study investigated the performance of a compound unit combining an air source heat pump (ASHP) and a small solid dehumidification runner. In this system, the exhaust gas and the condensation heat of the compressor were used as the regeneration energy of the runner dehumidifier. The detail of the exhaust temperature and the utilization energy characteristics of the heat pump were analyzed; the dehumidification runner under the waste energy utilization of the heat pump was also analyzed. The simulation result showed that the heating performance (COP) of the compound unit was 3.68 at the same evaporation temperature; but when the ASHP supplies heat, the condensing temperature becomes 55.0°C. Also, the primary energy utilization rate of the compound unit was 25 % higher than that of the ASHP. Also, the waste heat of the heat pump system was sufficient to realize the regeneration of the dehumidification runner under the dehumidification and cooling conditions in the hot season and met the prerequisites of the indoor wet load.