地源热泵冷热源机房备用泵配电问题探讨

Power Distribution of Standby Pumps in Geothermal Heat Pump Cold and Heat Source Room

对地源热泵冷热源机房设备的配电电气规范条文进行分析,并结合实际情况确定负荷等级。冷热源机房用电量较大,宜设置专用变压器,当专用变压器为两台或更多时,应满足其中一台变压器断开,其余变压器的容量能满足全部二级负荷的用电需求。举例不同地域和建筑围护结构对冷热源机房安装功率的影响。结合实际工程设计,列举3种可行的备用泵的配电方案:方案一,同一功能泵在同一组,由一条电源回路供电;方案二,同一功能泵分多组,由多条电源回路供电;方案三,备用泵在同一组,由一条电源回路供电,并分析其优缺点。根据项目实际需求提出合理化设计建议。

The electrical standard of geothermal heat pump cold and heat source room is analyzed to determine the load grade based on the actual situation.The cold and heat source room consumes a large amount of electricity,the special transformers are set up suitably.When there are two or more special transformers,it should be satisfied that if one of the transformers is disconnected,the capacity of the remaining transformers can meet the demand of all secondary loads.The influence of different regions and building envelope on the installed power of cold and heat source equipment room are explained.Combined with the actual engineering design,three feasible power distribution schemes of the standby pump are listed:Option 1,pumps with the same function are in the same group and powered by one power circuit;Option 2,pumps with the same function are divided into multiple groups and powered by multiple power circuits;Option 3,the standby pumps are in the same group and powered by one power circuit,analyzing its advantages and disadvantages.Finally,reasonable design suggestions are proposed according to the actual needs of the project.