| 摘要 |
PURPOSE:To contrive energy saving, by a method wherein the operation is suspended for a minimum suspension period of time and a feed water pump being connected in series is made to operate forcibly until the temperature of circulating water is increased up to a specific level when the capacity of a heat source apparatus, such as a refrigerator is less then a preset value and the temperature of circulating water is less than a preset temperature. CONSTITUTION:An opening of a vane becomes small and capacities of refrigerators R1-R3 are lowered when the refrigerators R1-R3 are turned ON and a temperature T2 of circulating water is lowered. In this instance, when an opening of a vane becomes smaller than a given value and the temperature T2 of circulating water becomes lower than a given temperature, operations of the refrigerators R1-R3 are suspended, pumps P1-P3 are operated forcibly by applying a forced operation signal to the pumps P1-P3 and cooling by means of cold water in piping is kept on. Then, when the temperature of circulating water is increased up to a far higher specified temperature, the refrigerators R1-R3 are restarted and the operation of the feed water pumps P1-P3 are suspended. |
