| 摘要 |
PURPOSE: To economically and adequately ensure control of the number of operated heat source machines irrespective of difference between rated capabilities and actual capabilities. CONSTITUTION: Capacity control signals S1 to SN in freezers 11 to 1N are provided, branched to a heat source controller 5. The heat source controller 5 finds out presently demonstrated capabilities q1 to qn (%) of the freezers 11 to 1n in operation from capacity control signals S1 -Sn . It finds out the sum of capabilities q1 to qn to set it as Q. Provided Q=100n, 'a stage increase request' is issued, while provided Q<=100(n-1), a 'stage reduction request' is issued. |
