| 摘要 |
To provide an air-conditioning apparatus with high energy efficiency and capable of preventing freezing of a heat medium even in the case of using a non-azeotropic refrigerant mixture. An air-conditioning apparatus 100 is designed to use a non-azeotropic refrigerant mixture, and is designed to, in a condition where a heat exchanger related to heat medium 15 serves as a cooler that cools a heat medium, control a heat medium passage reversing device 20 so that, when it is determined that a heat medium flowing through a heat medium flow passage of the heat exchanger related to heat medium 15 will not be frozen, a refrigerant flowing through a refrigerant flow passage of the heat exchanger related to heat medium 15 and the heat medium flowing through the heat medium flow passage of the heat exchanger related to heat medium 15 are in counter flow, and control the heat medium passage reversing device 20 so that, when it is determined that there is a possibility of freezing of the heat medium flowing through the heat medium flow passage of the heat exchanger related to heat medium 15, the refrigerant flowing through the refrigerant flow passage of the heat exchanger related to heat medium 15 and the heat medium flowing through the heat medium flow passage of the heat exchanger related to heat medium 15 are in parallel flow. |
