两种送风形式空气净化器周围流场测量与比较  

Measurement and Comparison of Air Flow around Two Air Purifiers with Different Supply Air Pattern

作　　者：王欢[1] 李文涵 WANG Huan;LI Wenhan(Department of Electronic Engineering,Tsinghua University,Beijing 100084;Zhongguancun High School,Beijing 100086)

机构地区：[1]电子工程系,清华大学,北京100084 [2]北京市中关村中学,北京100084

出　　处：《建筑科学》2018年第12期140-146,共7页Building Science

基　　金：“博士后创新人才支持计划”资助.

摘　　要：随着室外空气污染的加剧和人们健康环保意识的快速提升,空气净化器在建筑空间中得到广泛应用。净化器的效果和作用区域与净化器送风形式密切相关,而目前还没有送风形式对净化效果和作用区域影响的实验测量。为此本文采用新的流场测量手段,即彩色时序粒子轨迹测量方法(Color Sequence Particle Streak Velocimetry, CSPSV),分别对采用离心式风机和轴流式风机的两种送风形式净化器周围流动情况进行了详细测量,首次实现了对真实房间尺寸下的净化器周围气流的三维非接触式测量和对比研究。发现两种不同净化器的外流场,受送风气流的角度及动量的影响,呈现不同的形态;在此基础上分析了两种送风形式的室内流型和适用环境,并对优化保障效果提出了建议。该研究可用于指导净化器布置以及净化器数值模拟方法的验证。Air purifiers have been widely used in indoor and built environment, with even serious outdoor pollution and people’s raising concern of health and environment. The effect and impact zone of an air purifier is highly influenced with its air supply pattern. However, few studies have focused on the measurement of this factor. In this study, newly developed Color Sequence Particle Streak Velocimetry(CSPSV), a non-contacting measurement method, is utilized to measure the flow pattern caused by air purifiers with centrifugal fan and axial fan in a full scale room for the first time. The results show that the surrounding airflow patterns of two air purifiers differ dramatically with different angle and momentum of supply air flow. The flow pattern characters and suitable application scenarios of two air purifiers are analyzed based on the measurement results. Some suggestions are made for better application effect of air purifiers. This study can help to direct the utilization of air purifiers and the validation of CFD simulation.

关 键 词：净化器 流场测量 彩色时序粒子轨迹测量方法 送风方式 

分 类 号：TU317[建筑科学—结构工程]