中央空调吊柜余压计算表

风量风管外宽风管内宽风管外高风管内高流速当量直径风速动压管长比摩阻雷诺数沿程阻力局部阻力系数统计弯头阀门等查表得各自局部阻力系数局部阻力总阻力m³/h㎜㎜㎜㎜㎜m/sPamPa/mRe=vd/v1/λ^(1/2)λPaξPaPa1-2420200198.00200198.00198.002.985.333.200.65339125.205136.4210.0242.0901.670散流器1.28，90℃弯头0.398.9010.992-3840200199.00200199.00199.005.8920.902.802.30477857.192116.7520.0226.4510.350分叉三通0.25，变径0.17.3113.773-41200320318.50250248.50279.184.2110.681.330.81078072.971686.8740.0211.0770.640分叉三通0.25、90℃弯头0.396.837.914-51620320318.50250248.50279.185.6919.468.801.418105398.51187.0120.02012.4750.600分叉三通0.25*2、变径0.111.6824.155-62280320318.50320318.50318.506.2423.475.151.437132037.69617.1600.0207.4010.500分叉三通0.25*211.7319.136-73000500498.50320318.50388.675.2516.586.620.813135457.08377.2460.0195.3802.47090℃弯头0.39*2，变径0.1，防火阀0.19，突缩0.5，消声器0.940.9646.347-8设备8-930001360#######330328.50528.991.872.101.150.08365639.642566.9330.0210.09500.000.10合计122.39软接2个20.00新风入口30.00管路阻力合计172.39最远端出口动压5.33送风风口20.00机外余压198取1.2系数237订货240(常用局部阻力系数参考值：三通0.25，四通0.5，30℃弯头0.1，60℃弯头0.15，90℃弯头0.39，变径0.1，调节阀0.52，散流器1.25，百叶3.0，蝶阀0.3，突扩0.5，突缩0.5，天圆地方0.05，消声器ZP0.9,消声弯0.8,静压箱后回风可按突扩+突缩；静压箱下回风可按突扩++弯头+突缩；软接可按5-10Pa/个；粗效过滤30-40Pa，喷口和旋流风口根据厂家提供的资料确定。散流器在主管上下送的按三通0.25。风管有变径的需分2个管段计算，不能按一个管段来计算。管段编号摩擦阻力系数说明：1、空气参数大气压力P=101325Pa，温度T=20，密度=1.204kg/m3,运动粘度v=15.06*10E-6m2/s；2、端口动压：密度*风速*风速/2;3、风道内表面平均绝对粗糙度，钢板取K=0.15mm。备注：红色部分要自己填工程名称：XXX工程机外余压计算表（应用前请启用迭代计算）（设备型号：一层G-3WDX/E（四层右边）风量风管外宽风管内宽风管外高风管内高流速当量直径风速动压管长比摩阻雷诺数沿程阻力局部阻力系数统计弯头阀门等查表得各自局部阻力系数局部阻力总阻力m³/h㎜㎜㎜㎜㎜m/sPamPa/mRe=vd/v1/λ^(1/2)λPaξPaPa1-2420200198.00200198.00198.002.985.333.200.65339125.205136.4210.0242.0901.670散流器1.28，90℃弯头0.398.9010.992-3840200199.00200199.00199.005.8920.902.802.30477857.192116.7520.0226.4510.350分叉三通0.25，变径0.17.3113.773-41200320318.50250248.50279.184.2110.681.330.81078072.971686.8740.0211.0770.640分叉三通0.25、90℃弯头0.396.837.914-51620320318.50250248.50279.185.6919.468.801.418105398.51187.0120.02012.4750.600分叉三通0.25*2、变径0.111.6824.155-62280320318.50320318.50318.506.2423.475.151.437132037.69617.1600.0207.4010.500分叉三通0.25*211.7319.136-73000500498.50320318.50388.675.2516.586.620.813135457.08377.2460.0195.3802.47090℃弯头0.39*2，变径0.1，防火阀0.19，突缩0.5，消声器0.940.9646.347-8设备8-930001360#######330328.50528.991.872.101.150.08365639.642566.9330.0210.09500.000.10合计122.39软接2个20.00回风静压箱20.00管路阻力合计162.39最远端出口动压5.33送风回风口40.00机外余压208取1.2系数249订货250工程名称：XXX工程机外余压计算表（应用前请启用迭代计算）（设备型号：一层G-3WD/E（四层右边）管段编号摩擦阻力系数说明：1、空气参数大气压力P=101325Pa，温度T=20，密度=1.204kg/m3,运动粘度v=15.06*10E-6m2/s；2、端口动压：密度*风速*风速/2;(常用局部阻力系数参考值：三通0.25，四通0.5，30℃弯头0.1，60℃弯头0.15，90℃弯头0.39，变径0.1，调节阀0.52，散流器1.25，百叶3.0，蝶阀0.3，突扩0.5，突缩0.5，天圆地方0.05，消声器ZP0.9,消声弯0.8,静压箱后回风可按突扩+突缩；静压箱下回风可按突扩++弯头+突缩；软接可按5-10Pa/个；粗效过滤30-40Pa，喷口和旋流风口根据厂家提供的资料确定。散流器在主管上下送的按三通0.25。风管有变径的需分2个管段计算，不能按一个管段来计算。