Abstract
The ice storage air-conditioning system with heat pipe was presented, and analytical model relating to the exergy loss amount and loss rate was developed in each component of the ice storage air-conditioning system. Exergy analysis results of the ice storage air-conditioning system with heat pipe were compared with those of the ice storage air-conditioning system with ice-on-coil. The energy saving and exergy loss reduction possibilities were also analyzed and discussed. The results indicated that the exergy efficiency of the ice storage air-conditioning system with heat pipe is 9.55% higher than that of the ice storage air-conditioning system with ice-on-coil. The exergy loss in the condenser can be reduced by reducing thermal resistance and the temperature difference of heat transfer or utilizing exergy of heat rejected by the condenser. The exergy loss in the expansion valve is reduced through increasing supercooling temperature of the refrigerant before entering into the expansion valve or decreasing pressure difference between the condensing pressure and the evaporating pressure.
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