| abstract |
[PROBLEMS] To reduce the burden on an operator during an individual operation and to start and stop a refrigerator at an appropriate timing in an air-conditioning heat source system that can perform an automatic unit control operation and an individual operation. To do. During semi-automatic operation, the elapsed time after startup of a predetermined refrigerator 1-1, 1-2,... 1-n exceeds the set elapsed time after startup and the refrigerators 1-1, 1- 2, ... 1-n starts and stops the refrigerator 1-1, 1-2, ... 1-n state change elapsed time exceeds the state change elapsed time set value, Refrigerator load factor calculated based on the difference between the refrigerator return water temperature tin of the refrigerators 1-1, 1-2,... 1-n and the refrigerator outlet cold water temperatures tout1, tout2,. When the machine load factor lower limit value is not reached, a stop command can be given to the refrigerators 1-1, 1-2,. [Selection] Figure 1 |