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1、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=2 m/sv=3 m/sv=4 m/sv=5 m/sv=6 m/s150127/0.43190/0.98254/1.8318/3.23381/4.46200226/0.32339/0.73452/1.30565/2.03678/2.92250353/0.26530/0.558707/1.04883/1.621060/2.33300509/0.21764/0.951018/1.621273/2.441521/3.582、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=3 m/sv=4 m/sv=5 m/sv
2、=6 m/s120x120104/0.61156/1.27207/2.15259/3.25311/14.57160x120138/0.51207/1.07277/1.8346/2.75415/3.86160x160184/0.42277/0.78369/1.49461/2.26553/3.17200x120173/0.46259/0.95346/1.62432/2.45734/3.44200x160230/0.36346/0.77461/1.3576/1.79691/2.78250x120216/0.41324/0.87432/1.47540/2.23648/250x160288/0.3243
3、2/0.69576/1.17720/1.77864/2.48250x200360/0.27540/0.58720/0.99900/1.501080/2.11320x120269/0.38403/0.79537/1.34672/2.03806/2.86320x160369/0.29553/0.61737/1.04922/1.581106/2.22320x200461/0.25691/0.519221/0.871152/1.311382/1.85320x250576/0.21864/0.431152/0.741440/1.121728/1.57400x120336/0.35504/0.74673/
4、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
5、/0.602250/0.902700/1.28500x3201152/0.141728/0.282304/0.492880/0.753456/1.05500x4001440/0.122160/0.252880/0.423600/0.644320/0.89630x160726/0.221089/0.481452/0.841814/1.122177/1.98630x200907/0.191361/0.391814/0.672268/1.022722/1.43630x2501134/0.161701/0.322268/0.552835/0.833402/0.19630x3201452/0.13217
6、7/0.262903/0.443629/0.674355/0.94630x4001814/0.112722/0.223629/0.374536/0.565443/0.79630x5002268/0.13402/0.194536/0.315670/0.486804/0.68800x160922/0.201382/0.421843/0.672304/1.022765/2.15800x2001152/0.181728/0.372304/0.632880/0.953456/1.34800x2501440/0.142160/0.32880/0.513600/0.774320/1.08800x320184
7、3/0.12765/0.233686/0.404608/0.605530/0.851000x2001440/0.162160/0.352880/0.603600/0.904320/1.301000x2501800/0.132700/0.283600/0.484500/0.725400/1.021000x3202304/0.113456/0.234608/0.375760/0.576912/0.80圆形风管v=2 m/sv=3 m/sv=4 m/sv=5 m/sv=6 m/s10055/0.7683/1.58111/2.68139/4.05166/5.69140109/0.49164/1.032
8、19/1.75273/2.64328/3.72200224/0.31336/0.66448/1.12560/1.69672/2.382503.49/0.24524/0.5698/0.85873/1.281048/1.80360727/0.151090/0.321454/0.541817/0.822180/1.15400898/0.131347/0.281796/0.472245/0.722694/1.015001405/0.12108/0.212811/0.363513/0.554216/0.77说明(1).软管采用荷兰数据时,上述数据乘以下系数：150 x2； 200 x1.8； 250 x
9、1.5； 300 x1.3(2).局部摩擦阻力：散流器喉径(mm)P (Pa)v=2m/sv=3 m/sv=4 m/sv=5 m/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=3 m/sv=4 m/sv=5 m/sv=6m/s镀锌管200x2002.45.39.414.721.2镀锌管400x4006.414.3225.539.857.3软管15010.822.328.841.354.
10、1软管35010.122.740.463.190.8(4).保持风速必须的动压：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(5).其他局部阻力的计算按下式: 2gP=二、室内送回风口尺寸表1、风口风量冷量对应表冷量风量m/h送风口mm回风口mmRTkw1.03.5750700x150800x1501.55.3800700x150800x1502.071000900x1501000x150/800x2002.58.714501000x2001200x2003.0
11、10.516001100x2001300x2003.512.218001250x200/1000x2501500x200/1200x2504.01419501000x2501300x2505.017.5830001600x250/1360x3002、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侧送百叶风口条形风口局部孔板送风顶棚散流器顶棚孔板送风3-64-105-155-255-500.13-0.180.10-0.180.10-0.180.10-0.250.05-0.15712183060三、室内风管风速选择表1、低速
12、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空气过滤器加热排管冷却排管淋水室风机出口主风管支风管（水平）支风管（垂直）2.51.32.32.32.56.04.03.02.54.01.52.52.32.58.56.05.04.02.51.52.52.52.59.06.04.03.54.51.83.02.52.511.08.06.56.02.51.83.03.02.510.09.05.04.08.01.83.53.02.514.011.09.08.02、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公寓、饭店房间办公室、图书馆大礼堂、戏院银行、高级餐厅百货店、自助餐厅工厂3.05.06.04.07.59.012.55.07.510.06.510.012.015.04.06.57.55.57.57.59.03.06.08.05.08.08.011.03.05.06.14.06.06.07.53、通风系统之流速m/s系统商业工业
