供冷基站直埋供冷管道最大长度计算  

Calculation of maximum length of directly-buried cooling pipeline in cooling base station

作　　者：谭超毅[1] 胡海华[1] 张超 潘镇镇 

机构地区：[1]湖南工业大学湖南省建筑节能与环境控制关键技术协同创新中心 [2]株洲市住房与城乡建设局 [3]湖南工业大学

出　　处：《暖通空调》2015年第12期30-33,37,共5页Heating Ventilating & Air Conditioning

基　　金："十二五"国家科技支撑计划课题(编号:2011BAJ03B07)

摘　　要：根据制冷机组能效等级降等允许的管道供回水最大温升与管道传热和电动机功率转化为热量之间的热平衡关系，推导出区域供冷基站直埋供冷管道最大长度计算公式。经实例计算表明，工程中直埋供冷管道应该采取保温措施，且保温层厚度取0．04m为宜，此种条件下，直埋供冷管道最大长度可以达到930～1400m。Based on the thermal balance among the allowed temperature increase of the supply water and return water when the energy efficiency of the chiller degrades, the heat transfer of the pipeline and the heat from the friction of electric motors, deduces the mathematical expression of the maximum length of the directly buried cooling pipeline in the district cooling base station. The results show that the insulation layer is needed for the directly buried pipeline in engineering applications with a thickness of 0.04 meter appropriately, which ensures a maximum pipeline length of 930 to 1 400 meters.

关 键 词：供冷基站 能效等级 直埋供冷管道最大长度 管道最大温升 保温层厚度 

分 类 号：TU83[建筑科学—供热、供燃气、通风及空调工程]