变流量二次泵系统管网特性研究  

Research on piping network characteristics of secondary pump variable water volume systems

作　　者：杨伟[1] 陆琼文[2] 苏夺[2] 刘传聚[3] 林俣辰 

机构地区：[1]现代建筑设计集团上海建筑设计研究院有限公司 [2]现代建筑设计集团华东建筑设计研究院有限公司 [3]同济大学 [4]大连正信土木工程建设监理有限公司

出　　处：《暖通空调》2008年第6期138-141,共4页Heating Ventilating & Air Conditioning

摘　　要：计算分析了目前常用的供回水管压差控制、末端压差控制方式下二次泵变流量系统管网特性的变化,发现用户部分负荷时,采用供回水管压差控制的系统中,末端一般处于过流状态;采用末端压差控制的系统,末端一般处于欠流状态。建议在设计时可适当增大末端用户干管的管径,以减小沿程阻力损失,提高系统的稳定性。Calculates and analyses the piping network characteristics of the systems under pressure difference control of supply/return main pipes and terminal loop pressure difference control. Concludes that in the terminal unit operating under part load overflow would occur if the system is controlled by the former method, while underflow if the system is controlled by the latter method. Suggests that the diameters of main pipes of terminal users shall be enlarged in design to reduce the frictional resistance and increase the stability of the system.

关 键 词：变流量 管网 压差控制 节能 

分 类 号：TU831.3[建筑科学—供热、供燃气、通风及空调工程]