| 摘要 |
<P>PROBLEM TO BE SOLVED: To suppress wasteful energy consumption in an air-conditioning apparatus for a vehicle which cools forced air to be blown inside a vehicle cabin in a refrigeration cycle. <P>SOLUTION: When a heating operation is performed and the refrigerant evaporation temperature in the indoor evaporator 17 cannot be lowered to a temperature below the dew-point temperature Tdew of the blowing air introduced into the indoor evaporator 17, the refrigerant circuit is switched during a normal heating operation mode so that the flow of refrigerant is into a bypass passage 19 and the flow rate of refrigerant into the indoor evaporator 17 is reduced to zero. As a result, when the indoor evaporator 17 can not dehumidify the forced air, unnecessary heat exchange between the refrigerant and the forced air in the indoor evaporator 17 can be suppressed. Accordingly, the wasteful energy consumption in the air-conditioning system 1 for the vehicle can be effectively suppressed. <P>COPYRIGHT: (C)2013,JPO&INPIT |
