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An analytical study to evaluate the impact of distributed zone fans on the air flow rate in a mechanical ventilation system

机译:评价分布区风扇对机械通风系统空气流速影响的分析研究

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摘要

Based on air flow rate testing of each branch fan in a distributed fan ventilation system under different branch air duct inlet static pressures, the conclusion can be drawn that there is a branch fan air flow rate deviation phenomenon. The air flow rate of the branch fan increases with the branch air duct inlet static pressure at the same branch fan speed, and the branch fan hinders the air flow rate in some cases. In this study, a theoretical expression of the deviation of the branch air duct design air flow rate was established, and the influencing factors of the deviation were determined to include the branch air duct resistance characteristics, branch fan performance, and branch air duct inlet pressure ratio. A graphic analytical method for determining the deviation of the branch fan design air flow rate was also proposed. Both methods can provide a theoretical basis for calculating and analysing the deviation of the branch fan design air flow rate in a distributed fan ventilation system.
机译:基于在不同分支空气管道入口静态压力下分布式风扇通风系统中的每个分支风扇的空气流量测试,可以绘制结论,即存在分支风扇空气流速偏差现象。分支风扇的空气流量随着相同的分支风扇速度的分支空气管道入口静压而增加,并且在某些情况下,分支风扇阻碍了空气流速。在该研究中,建立了分支空气管道设计空气流量偏差的理论表达,并确定了偏差的影响因素包括分支机电阻特性,分支风扇性能和分支空气管道入口压力比率。还提出了一种用于确定分支风扇设计空气流速的偏差的图形分析方法。两种方法都可以为计算和分析分布式风扇通风系统中的分支风扇设计空气流速的偏差提供理论依据。

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  • 作者单位

    Chongqing Univ Sci & Technol Dept Architectural & Civil Engn Chongqing Peoples R China|Chongqing Key Lab Energy Engn Mech & Disaster Pre Chongqing Peoples R China;

    Chongqing Univ Sci & Technol Dept Architectural & Civil Engn Chongqing Peoples R China|Chongqing Key Lab Energy Engn Mech & Disaster Pre Chongqing Peoples R China;

    Chongqing Univ Sci & Technol Dept Architectural & Civil Engn Chongqing Peoples R China|Chongqing Key Lab Energy Engn Mech & Disaster Pre Chongqing Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Distributed fan ventilation; air flow rate; analytical approach; graphic method;

    机译:分布式风扇通风;空气流速;分析方法;图形方法;

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