| 摘要 |
Obtained is an air-conditioning apparatus capable of having a thin low-pressure gas pipe even when a refrigerant with a low refrigerant density at low pressure is used. An air-conditioning apparatus includes a refrigerant circuit 10 connecting a compressor 1, a heat source side heat exchanger 3, expansion devices 20, and use side heat exchangers 21 with pipes and circulating a refrigerant whose density in a saturated refrigerant gas at 0 degrees C is 35 to 65% of the density of an R410A refrigerant, and supercooling means (supercooling heat exchanger 4, expansion device 5, and bypass 7) making a liquid temperature sent from the heat source side heat exchanger 3 to the expansion devices 20 be 5 degrees C or less in a cooling operation. |
