| 摘要 |
<P>PROBLEM TO BE SOLVED: To alleviate the limit of an installation condition of a heat source unit when installing a utilized unit in a refrigerating system provided with the heat source unit and the utilized unit. <P>SOLUTION: When the refrigerating system 20 conducts cooling operation, an opening control means on a heat source side controls an opening of an expansion valve 36 on the heat source side so that the pressure of a refrigerant flowing into expansion valves 51a-51d on the utilization side during cooling operation may be a predetermined pressure reference value or lower. When the refrigerating system conducts heating operation, opening control means 38a-38d on a utilization side for reducing opening are provided to reduce openings of expansion valves 51a-51d on the utilization side of utilized units excluding those for low flow rates when any utilized unit for the low flow rate lowering necessary flow rate for demonstrating capacity by the flow rate of refrigerant exists among a plurality of utilized units 61a-61d during the heating operation. <P>COPYRIGHT: (C)2012,JPO&INPIT |
