空调系统节能优化运行与改造案例研究(2):冷水系统  

Case study on HVAC energy efficient optimization and renovation(Part Ⅱ):Chilled water system

作　　者：常晟[1] 魏庆芃[1] 蔡宏武[1] 谢俊骏[1] 陈永康 吴稼培[2] 陈盛业[2] 

机构地区：[1]清华大学 [2]太古地产有限公司

出　　处：《暖通空调》2010年第8期37-40,56,共5页Heating Ventilating & Air Conditioning

基　　金：国家"十一五"科技支撑项目"大型公共建筑能量管理与节能诊断技术研究"(编号:2006BAJ01A00)

摘　　要：从实例中旁通管逆流的现象出发,说明了末端侧冷水大流量小温差不仅影响冷水侧输送效率,且会对冷水机组运行造成不利影响。大流量小温差现象根源在于末端的不合理需求与水系统的过度供给,在改造时应从末端和压差设定点控制两方面入手。以实际工程为例,说明了水系统诊断与改造的全过程与实际的改造效果。Starts with the occurrence of backflow in by-pass pipe in a case,illustrates that chilled water of large flow rate and small temperature difference in user side not only affects the chilled water transporting efficiency,but also adversely affects the chiller＇s operation.The problem is attributed to the irrational designed demand of terminals and over supply by chilled water system.Both of the terminals and chilled water system differential pressure set points should be optimized in renovation.With an actual example,presents the process of chilled water system diagnosis and renovation and its energy saving effect.

关 键 词：水系统 小温差 冷水机组群控 节能改造 

分 类 号：TU831[建筑科学—供热、供燃气、通风及空调工程]