Air-conditioning hot-water supply system, and heat pump unit

An air-conditioning hot-water supply system comprising:

• an air temperature adjusting refrigerant circuit having a compressor and a utilization-side heat exchanger;
• a hot-water supplying refrigerant circuit having a compressor and a utilization-side heat exchanger;
• a heat medium circuit that allows a heat medium to circulate, the heat medium performing a heat exchange with refrigerants circulating in the air temperature adjusting refrigerant circuit and the hot-water supplying refrigerant circuit so as to store heat;
• and
• an intermediate heat exchanger that performs a heat exchange among the refrigerant circulating in the air temperature adjusting refrigerant circuit, the refrigerant circulating in the hot-water supplying refrigerant circuit, and the heat medium circulating in the heat medium circuit,
• wherein:
• the intermediate heat exchanger functions as a condenser for the air temperature adjusting refrigerant circuit, and as an evaporator for the hot-water supplying refrigerant circuit;
• when an air cooling operation by the air temperature adjusting refrigerant circuit and a hot-water supplying operation by the hot-water supplying refrigerant circuit are executed, the air temperature adjusting refrigerant circuit, the hot-water supplying refrigerant circuit, and the heat medium circuit are controlled such that a target evaporation temperature of the hot-water supplying refrigerant circuit or a target condensation temperature of the air-temperature adjusting refrigerant circuit is attained, the target evaporation temperature or the target condensation temperature being set based upon an air cooling capacity and the evaporation temperature of the air temperature adjusting refrigerant circuit and a hot-water supplying capacity and the condensation temperature of the hot-water supplying refrigerant circuit;
• and
• the target evaporation temperature of the hot-water supplying refrigerant circuit or the target condensation temperature of the air temperature adjusting refrigerant circuit is set to be higher as a ratio of the hot-water supplying capacity to the air cooling capacity increases.

A heat pump unit comprising:

• an air temperature adjusting refrigerant circuit having a compressor and a utilization-side heat exchanger;
• a hot-water supplying refrigerant circuit having a compressor and a utilization-side heat exchanger;
• and
• an intermediate heat exchanger arranged between the air temperature adjusting refrigerant circuit and the hot-water supplying refrigerant circuit,
• wherein:
• the intermediate heat exchanger functions as a condenser for the air temperature adjusting refrigerant circuit, and as an evaporator for the hot-water supplying refrigerant circuit;
• when an air cooling operation by the air temperature adjusting refrigerant circuit and a hot-water supplying operation by the hot-water supplying refrigerant circuit are executed, the air temperature adjusting refrigerant circuit, and the hot-water supplying refrigerant circuit are controlled such that a target evaporation temperature of the hot-water supplying refrigerant circuit or a target condensation temperature of the air temperature adjusting refrigerant circuit is attained, the target evaporation temperature or the target condensation temperature being set based upon an air cooling capacity and the evaporation temperature of the air temperature adjusting refrigerant circuit and a hot-water supplying capacity and the condensation temperature of the hot-water supplying refrigerant circuit;
• and
• the target evaporation temperature of the hot-water supplying refrigerant circuit or the target condensation temperature of the air temperature adjusting refrigerant circuit is set to be higher as a ratio of the hot-water supplying capacity to the air cooling capacity increases.