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1、條條縫縫、孔孔口口均均勻勻送送風(fēng)風(fēng)管管道道計計算算靜壓不變沿程阻力=動壓變化左右面對稱50001000045004000350030002500200015001000500140500500500500500500500500500140斷面編號012345678910斷面風(fēng)量L500045004000350030002500200015001000500140動壓Pd=0.5Vd212.15011.49010.85110.2299.6219.0218.4237.8137.1696.4315.574靜壓Pj=0.5Vj241.6741.6741.6741.6741.6741.6741.674

2、1.6741.6741.6741.67流速Vd=1.29Pd0.54.54.374.254.134.003.873.743.613.453.273.05斷面面積=L/(3600*Vd)0.3090.2860.2610.2360.2080.1790.1480.1160.0800.0420.013斷面尺寸mm*mmW*H309100092684776367558148137426113841當(dāng)量直徑De=2wh/(w+h)0.4720.4630.4520.4400.4240.4030.3760.3380.2830.1900.073圓形管道D=6276035775485154784353843202

3、32128出流角tga=Vj/Vd1.851.911.962.022.082.152.232.312.412.552.74出流角a=62.3162.9863.6664.3565.0665.8166.6067.4968.5769.92管段編號0-11-22-33-44-55-66-77-88-99-10管段長度l=m1.41.41.41.41.41.41.41.41.41.12比摩阻R=0.0105*De-1.21*V1.9250.4720.4560.4440.4340.4280.4280.4350.4600.5270.766沿程阻力P=R*l0.6600.6390.6220.6080.6000

4、.5990.6100.6440.7370.857沿程阻力Py=6.576自動全壓Pq=Pj0+Pd053.817自動鍍鋅板展開面積F=46.46自動左右對稱風(fēng)管的總面積已知：條縫流量系數(shù)u=0.6 輸入在0.6-0.65間取值，送風(fēng)量L=10000 輸入總風(fēng)量管道是否對稱2 輸入1=不對稱，2=左右對稱管道單側(cè)總長l=14 輸入縫、口數(shù)量1 輸入設(shè)：縫、口出風(fēng)速度V0=5 輸入首端0-0風(fēng)速Vd0=4.5 輸入則：縫、口面積總=0.278自動縫、口面積每個=0.278自動條縫寬度mmb0=20自動孔口直徑mm=595自動條縫靜壓速度Vj=8.33自動H=W=309b0=20mm 自動出風(fēng)量自動

5、自動自動Pdn=Pdn-1-P自動自動自動自動C16不變自動C16不變自動自動應(yīng)大于1.73,B31不變自動應(yīng)大于60自動自動自動局部阻力不計條條縫縫、孔孔口口均均勻勻吸吸風(fēng)風(fēng)管管道道計計算算真空度不變Pzk=Pd0+Pml+Vx2*0.6適用全部風(fēng)口Pzk=Pd0+Pml+Vx2*0.6適用條縫風(fēng)口Pdn=Pd10-PmlVn=Pdn0.5左右面對稱500010800972086407560108010801080斷面編號0123斷面風(fēng)量L10800972086407560動壓Pd=0.5Vd215.00015.33015.68416.071真空度Pzk=Pd0+Pml+Vx2*0.656.

6、8556.8556.8556.85流速Vd=1.29Pd0.555.055.115.17斷面面積=L/(3600*Vd)0.6000.5350.4700.406斷面尺寸mm*mmW*H6001000891783677當(dāng)量直徑De=2wh/(w+h)0.7500.7170.6790.636圓形管道D=874825773719出流角tga=Vj/Vd6.756.686.616.53出流角a=81.4981.3981.29管段編號0-11-22-3管段長度l=m111比摩阻R=0.0105*De-1.21*V1.9250.3300.3550.387沿程阻力Py=R*l0.3300.3550.387沿

7、程阻力Py=Rl8.096自動總壓力損失=py+Pdx41.846自動鍍鋅板展開面積F=44.38自動左右對稱風(fēng)管的總面積已知：吸入口局阻系數(shù)=1 輸入條縫=1，其他=2.78-2.37送風(fēng)量L=10800 輸入總風(fēng)量管道是否對稱1 輸入1=不對稱，2=左右對稱管道單側(cè)總長l=10 輸入縫、口數(shù)量10 輸入設(shè)：縫、口吸風(fēng)速度Vx=7.5 輸入首端0-0風(fēng)速Vd0=5 輸入則：縫、口面積總=0.400自動縫、口面積每個=0.040自動條縫寬度mmb0=40自動孔口直徑mm=226自動吸入動壓Pdx=33.75自動H=W=600648054004320324021601080216 b0=40mm

8、108010801080108010801080216 出風(fēng)量自動45678910648054004320324021601080216 自動16.50116.98717.55518.25119.17120.58423.096自動Pdn=Pdn-1-P56.8556.8556.8556.8556.8556.8556.85自動5.245.325.405.515.655.856.20自動0.3440.2820.2220.1630.1060.0510.010自動5734703702721778516自動C16不變0.5860.5270.4580.3740.2730.1500.031自動C16不變661599532456368255111自動6.446.356.246.125.985.775.44自動應(yīng)大于1.73,B31不變81.1781.0580.9080.7380.5080.1679.59自動應(yīng)大于603-44-55-66-77-88-99-101111110.8 自動0.4290.4860.5680.6960.9211.4133.139自動0.4290.4860.5680.6960.9211.4132.511自動局部阻力不計左右對稱風(fēng)管的總面積自動Pdn=Pdn-1-P應(yīng)大于1.73,B31不變局部阻力不計