同程布置冷水系统管网水力特性计算机分析  

Computer calculation method of hydraulic characteristics of reversed return chilled water system

作　　者：刘雪峰[1] 刘金平[1] 陈星龙[1] 陆继东[1] 

机构地区：[1]华南理工大学,广东省广州市510641

出　　处：《暖通空调》2012年第10期121-127,共7页Heating Ventilating & Air Conditioning

基　　金：中央高校基本科研业务费专项资金资助项目(编号:2011ZM0022);高效清洁利用广东普通高校重点实验室(华南理工大学)资助项目(编号:KLB10004)

摘　　要：以同程布置的冷水系统管网为研究对象,在充分考虑末端支路温度调节阀调节特性的基础上,建立了管网水力计算数学模型,提出了虚拟流量的计算机逻辑算法。以10个AHU支路的同程式管网为例,在所有末端支路水力可调、部分AHU关闭及部分AHU调节失灵3种情况下,分别计算了不同供回水压差下各支路温度调节阀的开度和实际流量,计算结果符合同程式管网的固有特性。Taking a reverse-return chilled water system as the research object, based on full consideration of the regulating characteristics Of temperature regulating valves in terminal branches, establishes a mathematical model of pipe network hydraulic characteristics, and puts forward a computer logic algorithm with virtual flow. Taking a reverse-return pipe network with ten AHU branches as the example, calculates the opening of temperature regulating valves and actual flow in branches respectively in the condition of different supply-return water pressure differences in three kinds of operating conditions of pipe network including all terminal branches being hydraulic adjustable, part AHU closing and part AHU being out of adjustment. The calculation results are in accord with the natural characteristics of reversed return pipe network.

关 键 词：冷水系统 管网 同程布置 水力特性 温度调节阀 开度流量 

分 类 号：TU831.3[建筑科学—供热、供燃气、通风及空调工程]