分布式水泵供热系统零压差点与输送功率的关系  

Relationship between zero-pressure-difference point and transporting power in distributed pump heating systems

作　　者：王芃[1] 邹平华[1] 雷翠红[2] 

机构地区：[1]哈尔滨工业大学 [2]太原理工大学

出　　处：《暖通空调》2011年第10期91-95,108,共6页Heating Ventilating & Air Conditioning

基　　金："十一五"国家科技支撑计划重大项目(编号:2006BAJ01A04)

摘　　要：为了研究分布式水泵供热系统的水力工况和运行能耗,提出以零压差点作为该系统的水力标志,利用它与热源之间供、回水管段的总阻力损失分析管网中多个零压差点的分布,同时唯一确定了系统循环水泵的配置和压力分布。利用特定工况下的流量-压头图分析了各种循环水泵配置方案的输送功率,说明了零压差点与热媒输送功率的关系,并指出了系统达到需用功率的条件。通过工程实例的分析,定性讨论了若干典型的循环水泵配置方案。Puts forward the zero-pressure-difference point to analyse the hydraulic condition and operating energy consumption of the distributed pump heating system.Studies the distribution of zero-pressure-difference points by total resistance loss of water supply and return pipes between heat source and one of zero-pressure-difference points,and determines the configuration of circulating pumps and pressure profile.The transporting power of heat medium is shown on flow-pressure head graph under certain condition,as well as the relationship between the power and zero-pressure-difference points.Puts forward the condition to achieve the required power.With a project case,discusses qualitatively several representative configuration schemes of circulating pumps.

关 键 词：分布式水泵供热系统 水力工况 零压差点 输送功率 

分 类 号：TU995[建筑科学—供热、供燃气、通风及空调工程]