| 摘要 |
PROBLEM TO BE SOLVED: To provide an air conditioner of high energy efficiency by reducing in-pipe refrigerant pressure loss of an indoor heat exchanger while preventing degradation of heating performance, and improving indoor heat exchanging performance in a cooling operation and a dehumidifying operation, in an air conditioner using a HFO-1234yf refrigerant and having a dehumidifying valve on the way of the piping of the indoor heat exchanger. SOLUTION: In this air conditioner performing cooling, heating and dehumidifying operations by circulating a HFO-1234yf single refrigerant, or a mixed refrigerant prepared by mixing HFO-1234yf and another refrigerant as a working fluid, pressure loss in a second indoor heat exchanger as an evaporator is lower than pressure loss in a first indoor heat exchanger as a condenser in the dehumidifying operation. COPYRIGHT: (C)2011,JPO&INPIT
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