限流孔板計算

已知條件,,,,,,,限流孔板計算,

流量,QNmax：,25,m3/h,,,,,

,QNcom：,20,m3/h,,,,,

,QNmin：,15,m3/h,,,,,

工作溫度,t1,20,OC,,,,,

工作壓力,P1,600,Kpa,,,,,

壓力損失,<=,4,Kpa,,,,,

管道內(nèi)徑,D20,27.7,mm,,,,,

管材線脹系數(shù),,1.6600E-05,mm/mmOC,,,,,

,,,,,,,,,

輔助計算,,,,,,,,

流量標(biāo)尺上限,Q20,20,m3/h,-98.1579,%,,,

本地大氣壓,Pa,100,Kpa,,,,,

管道內(nèi)徑,D,27.7000,mm,,,,,

氣體壓縮系數(shù),Z,0.99973,,,,,,

絕對溫度,T1,293.15,K,,,,,

絕對壓力,P1,700,Kpa,,,,,

標(biāo)況密度,,1.25,kg/m3,,,,,

工況密度,,8.6383,kg/m3,,,,,

標(biāo)況粘度,,0.01766,cp,,,,,

粘度系數(shù),,1,,,,,,

工況粘度,,0.01766,cp,,,,,

等熵指數(shù),,1.4,,,,,,

管道粗糙度,K,0.1000,,,,,,

,D/K,277,,,,,,

工況流量,Qmax：,2.8941,m3/h,,,,,

,Qcom：,2.8941,m3/h,,,,,

,Qmin：,2.1706,m3/h,,,,,

,ReDmin,13568.56957,,,,,,

,ReDcom,18091.42609,,,,,,

,,,,,,,,,

確定差壓上限,P,8,Kpa,,E,K,,

圓整,P,8,Kpa,,,1.2,1.24,1.4

,P2/P1,0.9886,,B^4,0.1,0.9912,,0.9919

,Pcom,8.0000,Kpa,,0.0000,0.991899994,0.992074994,0.992599994

,(a0B2)1,0.0310,0.0006,,0.2,0.9905,,0.9912

,B1,0.0310,,,,,,

,r0,1,,,,E,,

,rRe,1,,,,0.9926,,

,(a0B2)2,0.0312,0.0006,,,,,

,B2,0.0310,,,,,,

,d,0.8587,,,,,,

,Qcom：,0.0533,2.8941,,,,,

,Dq,-98.1579,%,,,,,

確定差壓上限,P,8.0000,Kpa,,,,,

孔板開孔直徑,d20:,0.859,mm,,,,,

加工公差,,0.0004,mm,,,,,

最大壓力損失,,7516,Pa,,,,,

通常壓力損失,,7516,Pa,,,,,

上游最小直管段,,443,mm,,,,,

下游最小直管段,,97,mm,,,,,

管道內(nèi)徑,D20,27.7000,mm,,,,,

孔板開孔直徑比,,0.0310,,,,,,

,,,,,,,,,

,,,,,,,,,

,a0,0.598540921,,,,,,

0.622331463,0.598540843,0.596051300,0.521308800,0.006722261,1.766438000,0.046911440,0.004375047,

0.031000000,0.000000079,8.882100000,0.454066400,0.219507300,19.979260000,1.031439