| 摘要 |
PROBLEM TO BE SOLVED: To provide a hot/cold water air conditioning system for suppressing an ON/OFF cycle operation of a heat pump heat source machine.SOLUTION: A hot/cold water air conditioning system includes: a water temperature sensor 5 for detecting a temperature of water flowing out of a heat pump heat source machine 1 by an operation of a water circulation pump 4; and a control device 6 for performing an ON/OFF normal control in which, during a heating operation, a compressor is turned ON when the water temperature detected by the water temperature sensor 5 becomes lower than a target water temperature, and an operation of the compressor is turned OFF when the water temperature becomes equal to or more than a first temperature value which is higher than the target water temperature. In the ON/OFF normal control, when the ON/OFF operation of the compressor is repeated at a lowest frequency necessary for the operation of the compressor, the control device 6 performs control by switching to an ON/OFF suppression control in which the compressor is turned ON when the water temperature becomes below a second temperature value which is lower than the target water temperature, and the operation of the compressor is turned OFF when the water temperature becomes equal to or more than a third temperature value which is higher than the target water temperature. |
