基于数值模拟的空调水管连接方式对流量和压力的影响研究  

Impact Study of Air Conditioning Pipe Connection Modes on Flow Rate and Pressure Based on Numerical Simulation

作　　者：朱杰克 汤毅 ZHU Jieke;TANG Yi(Shanghai Installation Engineering Group Co.,Ltd.,Shanghai 200080,China)

机构地区：[1]上海市安装工程集团有限公司,上海200080

出　　处：《建筑施工》2024年第11期1808-1811,共4页Building Construction

基　　金：上海市安装工程集团有限公司年度科研计划(AZ2022-44)。

摘　　要：降低空调系统的能耗,对建筑实现“碳达峰和碳中和”目标有着重要的意义。而在高效机房中,空调水支管和总管之间的连接方式将影响管道内的压力分布和管道阻力,进而影响总管内的水流量和水泵能耗。因此,采用数值模拟技术,分析了3种不同管组连接方式,即直接连接、漏斗形连接、弧形连接下的管内流量和压力分布,并阐述了出现各种现象的原因。结果表明,当管组间采用弧形连接时,可使得总管内的流量在最短的流动发展距离内达到最大,但是采用弧形连接所造成的管道阻力损失相较于直接连接和漏斗形连接最大分别增大47.81%和7.88%。基于该数值模拟结果,概括出普适性较高的结论与建议,可为类似工程的空调水管设计提供参考。Reducing the energy consumption of air conditioning systems is crucial for buildings to achieve the goals of'carbon peaking and carbon neutrality'.In high-efficiency machine rooms,the connection mode between the air-conditioning water branch pipe and the main pipe influences the pressure distribution and pipeline resistance,thereby affecting the flow rate in the main pipe and the pump's energy consumption.Numerical simulation technology is employed to analyze the flow and pressure distribution within the pipe under three different pipe connection modes:direct connection,funnel connection,and arc connection,with the causes of various phenomena discussed.The results indicate that when an arc connection is used between pipe groups,the flow rate in the main pipe reaches a maximum within the shortest flow development distance.However,the pipe resistance loss caused by the arc connection is found to be 47.81%and 7.88%higher than that caused by direct connection and funnel connection,respectively.Based on the numerical simulation results,general conclusions and recommendations are provided,which can serve as a reference for the design of air conditioning water pipes in similar projects.

关 键 词：高效机房 空调系统能耗 数值模拟 管内流量 压力分布 

分 类 号：TU242.6[建筑科学—建筑设计及理论]