Exergy Analysis of Energy Consumption for Primary Return Air Conditioning System

The energy consumption of primary return air conditioning system was researched by the method of exergy analysis. Combined with actual example, the exergy loss of equipments and the exergy efficiency of system were calculated both in summer and in winter. The results show that the exergy efficiency is very low in two conditions. The exergy loss focuses on air-conditioned room.The exergy loss of reheater has obvious difference between summer and winner. Based on this, the improvement measure was proposed,which can provide guide for the energy conservation of equipments and system.