| 摘要 |
PROBLEM TO BE SOLVED: To perform stabilized operation even upon variation of load by employing general purpose components in a refrigerating machine supply facility and reducing the amount of materials up to the load side. SOLUTION: Inlet/outlet temperature difference of chilled water in cooling systems 11a, 11b, 11c on the load side is set higher than the inlet/outlet temperature difference of a chilled water supply facility 3 for a refrigerating machine on the chilled water supply side and bypass piping 15 for absorbing the difference in the volume of chilled water between the supply side and the load side is provided. At the time of variation on the load side, the inlet/outlet pressure difference and the return temperature of the chilled water supply facility 3 for the refrigerating machine are varied. In order to sustain stabilized operation regardless of these variations, the bypass piping 15 is provided with a pressure control valve 16 and a controller 21 controls the opening of a flow regulation valve 14 to regulate the flow rate of chilled water flowing through the cooling systems 11a, 11b, 11c on the load side such that the chilled water return temperature of the chilled water supply facility 3 for the refrigerating machine will be constant. |
