Abstract
This study aimed to evaluate the energy consumption performance of a multi-functional air-source heat pump for the indoor air-conditioning, heating, and hot water supply of an office building. Based on the investigation, four heat pump system configurations are proposed for the comparative evaluation of each system. Two reference systems are used for comparisons in the energy performance evaluation. The detailed thermal load for a 100 ㎡ office building was conducted using commercial energy simulation tools. Thermodynamic theoretical equations were used for heat pump simulation. The results show that case 2, the cascade heat pump system, can reduce primary energy consumption by 41.7 % and 54.0 % when compared with two reference systems and showed the highest energy-saving performance in the proposed cases. This study validated the use of the multi-functional cascade heat pump system for use in an office building.
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