20 September 2011

DEVELOPMENT OF MULTI-SOURCE AND MULTI-USE HEAT PUMP SYSTEM


A heat pump system is expected to reduce more energy than traditional systems. However, it is difficult for a conventional heat pump system to reduce further energy. Therefore, to achieve higher efficiency than conventional systems, Multi-Source and Multi-Use Heat Pump (MMHP) system is proposed. MMHP system connects multiple heat sources such as solar heat, ground source and air source and multiple heat uses such as cooling, heating, and hot water supply with the water loop. Each heat use side can utilize heat efficiently. In addition, MMHP system has a characteristic of a daily geothermal storage which keeps efficiency and reduces the initial cost to embed heat exchangers. In this paper, MMHP system was simulated compared with the conventional heat pump system. The results show that the power consumption of MMHP system was reduced by maximum 44 % in summer and 39 % in winter.