通风排烟风管及风口设计参数.doc

通风排烟设计工具箱一、通风管道流量阻力表1、缩伸软管摩擦阻力表圆形风管v=2m/sv=3m/sv=4m/sv=5m/sv=6m/se150127/0.43190/0.98254/1.8318/3.23381/4.46e200226/0.32339/0.73452/1.30565/2.03678/2.92e250353/0.26530/0.558707/1.04883/1.621060/2.33e300509/0.21764/0.951018/1.621273/2.441521/3.582、镀锌板风管摩擦阻力表矩型风管mm风量(m3/h)/摩擦阻力(Pa)v=2m/sv=3m/sv=4m/sv=5m/sv=6m/s120x120104/0.61156/1.27207/2.15259/3.25311/14.57160x120138/0.51207/1.07277/1.8346/2.75415/3.86160x160184/0.42277/0.78369/1.49461/2.26553/3.17200x120173/0.46259/0.95346/1.62432/2.45734/3.44200x160230/0.36346/0.77461/1.3576/1.79691/2.78250x120216/0.41324/0.87432/1.47540/2.23648/250x160288/0.32432/0.69576/1.17720/1.77864/2.48250x200360/0.27540/0.58720/0.99900/1.501080/2.11320x120269/0.38403/0.79537/1.34672/2.03806/2.86320x160369/0.29553/0.61737/1.04922/1.581106/2.22320x200461/0.25691/0.519221/0.871152/1.311382/1.85320x250576/0.21864/0.431152/0.741440/1.121728/1.57400x120336/0.35504/0.74673/1.25841/1.901009/2.67400x160461/0.27691/0.56922/0.951152/1.451382/2.03400x200576/0.22864/0.461152/0.781440/1.201728/1.68400x250720/0.191080/0.381440/0.661800/1.002160/1.40500x160576/0.25864/0.521152/0.891440/1.341728/1.89500x200720/0.211080/0.421440/0.731800/1.12160/1.54500x250900/0.171350/0.351800/0.602250/0.902700/1.28500x3201152/0.141728/0.282304/0.492880/0.753456/1.05500x4001440/0.122160/0.252880/0.423600/0.644320/0.89630x160726/0.221089/0.481452/0.841814/1.122177/1.98630x200907/0.191361/0.391814/0.672268/1.022722/1.43630x2501134/0.161701/0.322268/0.552835/0.833402/0.19630x3201452/0.132177/0.262903/0.443629/0.674355/0.94630x4001814/0.112722/0.223629/0.374536/0.565443/0.79630x5002268/0.13402/0.194536/0.315670/0.486804/0.68800x160922/0.201382/0.421843/0.672304/1.022765/2.15800x2001152/0.181728/0.372304/0.632880/0.953456/1.34800x2501440/0.142160/0.32880/0.513600/0.774320/1.08800x3201843/0.12765/0.233686/0.404608/0.605530/0.851000x2001440/0.162160/0.352880/0.603600/0.904320/1.301000x2501800/0.132700/0.283600/0.484500/0.725400/1.021000x3202304/0.113456/0.234608/0.375760/0.576912/0.80圆形风管v=2m/sv=3m/sv=4m/sv=5m/sv=6m/se10055/0.7683/1.58111/2.68139/4.05166/5.69e140109/0.49164/1.03219/1.75273/2.64328/3.72e200224/0.31336/0.66448/1.12560/1.69672/2.38e2503.49/0.24524/0.5698/0.85873/1.281048/1.80e360727/0.151090/0.321454/0.541817/0.822180/1.15e400898/0.131347/0.281796/0.472245/0.722694/1.01e5001405/0.12108/0.212811/0.363513/0.554216/0.77(1) 说明.软管采用荷兰数据时,上述数据乘以下系数：(2) e150x2；e200xl.8；e250xl.5；0300xl.3.局部摩擦阻力：散流器喉径(mm)△P(Pa)v=2m/sv=3m/sv=4m/sv=5m/sv=6m/s200x20015.935.763.499.1142.7300x30023.853.595.1148.7214.1400x40029.466.0117.3183.2263.9(3) 与散流器的摩擦阻力：接管规格(mm)△P(Pa)v=2m/sv=3m/sv=4m/sv=5m/sv=6m/s镀锌管200x2002.45.39.414.721.2镀锌管400x4006.414.3225.539.857.3软管①15010.822.328.841.354.1软管e35010.122.740.463.190.8(4) .保持风速必须的动压：(5) 当v=2m/s时，△P=2.4Pa；当v=3m/s时，△P=5.4Pa当v=4m/s时，△P=9.6Pa；当v=5m/s时，△P=15Pa当v=6m/s时，△P=21PaV2.其他局部阻力的计算按下式:2g△P=Z—Y二、室内送回风口尺寸表1、风口风量冷量对应表冷量风量送风口回风口RTkwm/hmmmm1.03.5750700x150800x1501.55.3800700x150800x1502.071000900x1501000x150/800x2002.58.714501000x2001200x2003.010.516001100x2001300x2003.512.218001250x200/1000x2501500x200/1200x2504.01419501000x2501300x2505.017.5830001600x250/1360x3002、不同送风方式的风量指标和室内平均流速ASHRAE送风方式单位地板面积的送风量l/sm2工作区平均流速m/s换气次数h-1侧送百叶风口3—67条形风口4--100.10—0.1812局部孔板送风5--150.10—0.1818顶棚散流器5—250.10—0.2530顶棚孔板送风5-5060三、室内风管风速选择表1、低速风管系统的推荐和最大流速m/s应用场所住宅公共建筑工厂推荐最大推荐最大推荐最大室外空气入口2.54.02.54.52.58.0空气过滤器1.31.51.51.81.81.8加热排管2.32.52.53.03.03.5冷却排管2.32.32.52.53.03.0淋水室2.52.52.52.52.52.5风机出口6.08.59.011.010.014.0主风管4.06.06.08.09.011.0支风管（水平）3.05.04.06.55.09.0支风管（垂直）2.54.03.56.04.08.02、低速风管系统的最大允许速m/s应用场所以噪声控制主风管以摩擦阻力控制送风主管回风主管送风支管回风支管住宅3.05.04.03.03.0公寓、饭店房间5.07.56.56.05.0办公室、图书馆6.010.07.58.06.1大礼堂、戏院4.06.55.55.04.0银行、高级餐厅7.510.07.58.06.0百货店、自助餐厅9.012.07.58.06.0工厂12.515.09.011.07.53、通风系统之流速m/s系统商业工业低速送风、最大流速送风、一般流速回风、最大流速回风、一般流速136—11107.5—91311--13139--13高速、一般1313--25室内允许噪声主。