| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To promote energy saving without requiring difficult construction during low loads. <P>SOLUTION: A current load heat amount W is acquired (step S101). When the load heat amount W is W=0 (no load) (YES in step S102), the operation of a refrigerator of the last-stage in a stage-reduction direction is stopped, and the number of operated refrigerators is set to zero (step S104). At this time, a primary pump that is the auxiliary machine of the refrigerator is operated not normally (continuous operation) but intermittently (step S105). In place of the intermittent operation, an inverter frequency may be reduced. <P>COPYRIGHT: (C)2013,JPO&INPIT</p> |
