| 摘要 |
PURPOSE:To maintain the stable property of a control system and transfer into automatic control mode smoothly by a method wherein the capacities of the heat source equipments, which are operated newly, are set in relative to an air-conditioning load after switching when the number of operating sets of the heat source equipments such as a refrigerator, boiler or the like are switched. CONSTITUTION:Cold water, cooled by the refrigerators R1-R3, is forced into and applied to an air-conditioning load AL such as fan coil unit or the like by pumps P1-P3 through a header H1 and, thereafter, is recirculated to the refrigerators R1-R3 through the header H2. The feed water temperature from the header H1 is detected by a temperature sensor T1, the flow amount of feed water is detected by a flow meter F and the amount of heat of the feed water is obtained by a controller CON, on the other hand, the temperature of the recirculating water for the header H2 is detected by the temperature sensor T2, the amount of heat of the recirculating water is obtained by the detecting output of the flow amount meter F and the number of operating sets of the refrigerators R1-R3 as well as the opening degree of the vane is controlled in accordance with these outputs. However, when the operating sets of the refrigerators R1-R3 is switched, a forced load rate, determined by the ratio of the air-conditioning load in this case to the total capacity of the refrigerators operated after the switching, is obtained by the operation of the controller CON and the opening degree of the vane is controlled in accordance with the forced load rate. |
