不同温度下空气中饱和水分含量及饱和蒸汽压・・不同温度下空气中饱和水分含量及饱和蒸汽压兰州真空设备有限责任公司温度。c饱和水分含量g/m3饱和蒸汽压Pa4050.917368.6243846.006618.7083641.515935.3923437.405314.683233.644483.5123030.304238.422827.203776.222624.303357.9722421.802981.0162219.402641.356温度c饱和水分含量g/m3饱和蒸汽压Pa-121.81217.3824-141.52181.2852-161.27150.7824-181.06125.0748-200.888103・3632-220.73685.248-240.59070・0632-260.50457.276-280.41446・7532-300.34038.0952温度。c饱和水分含量g/m3饱和蒸汽压Pa4050.917368.6243846.006618.7083641.515935.3923437.405314.683233.644483.5123030.304238.422827.203776.222624.303357.9722421.802981.0162219.402641.356温度c饱和水分含量g/m3饱和蒸汽压Pa-121.81217.3824-141.52181.2852-161.27150.7824-181.06125.0748-200.888103・3632-220.73685.248-240.59070・0632-260.50457.276-280.41446・7532-300.34038.09521613.631815.516-360.18420.11321412.051597.068-380.14916.11721210.681401.264-400.12012.9204109.351226.77-420.09610.25648&281072.26-440.0778.125267.28933.732-460.0616.393646.39812.52-480.0495.061625.60704.628-500.0383.862804.85609.923-520.0303.0636-24.14516.816-540.0242.3976-43.52436.896-560.0181.8648~63.00368.298-580.0141.4652-82.54309.8232-600.0111.0656一］02.14259.74900.0093粘滞流下20°C空气的管道流导《真空设计手册》项目公式1.34x103d4pU二l短管111—+UUU短孔管矩形截面直管4560Ka2b2-U—fp/a/b^1T0987654321Kf1.000.990.980.950.900.820.710.580.420.23环形管道门1340方「力,(d-d)2l12in(d/d)12椭圆管道厂42920—a3b3U—pla2+b2孔、当时-^pA1>x>0.525时U—76.6x0.712x^'l-x0.228一o-rt1—X当<0525时，U200Ax<0.525U—0-符号意义单位U粘滞流下20C空气流导m3/Sd管道直径ml管道长度ma、b椭圆长半轴，短半轴mP管道中平均压力Pa九孔面积m2x孔两侧压二力比粘滞流一分子流下管道流导”…d31+271(dP)+4790(dP)2Uf2o=12.1—x吋呱l1+316(dP)〃：管道直径mZ：管道长度mP:管道中平均压力P=(P1+P2)/2分子流下20°C空气的管道流导《真空设计手册》项目公式圆长管U=12.1d3l圆孑L.U=9.11d2圆短管U=9.11d2xaL/d00.050.10.20.40.60.8a10.9650.9310.870.7690.690.6250c2468102040608000.5720.40.250.1820.1430.1170.06250.0320.020.0010符号：U流导（L/s）l管长（cm）椭圆长半轴、短半轴正力形15.45a3U=/矩形30.9Ka2b2U—fa1——67F26)^・500E33r9800972500001444Uf(a+b)lK1・1等边角形TT4.79a3U—l扁缝形—30.9Kab2U—bla>>bl/b12481K0.0360.0680.130.220.262c34510>100.400.520.600.670.941环形12.1K(d—d)2x(d+d)a1212d100.2590.50.7070.8660.966lKa丁1.0721.1541.2541.4301.675椭圆形TT136.6a2b21U一x<'a2+b2l锥形d2d2U—24.2——(d+d)l12直角弯管按直管计算,管道计算长度l—l+1+4d123缩孔”9.11d2d2U—1_2-d2—d212管道直径（cm）材料物理性能组别牌号重度g/cm3膨胀系数dX106导热系数卡/厘米•秒•度电阻系数Q.mm2/m熔点C纯铜T18・920°C17.70.961083T28・917.70.951080T4&8917.40.431080黄铜H908・81820.40.039H808.6519.10340.054H65■W--8.4720.10.2880.069H628.4320.60.260.071纯铝20~100C20~200CL62.712424.80.54658L4■W--2.712424.80.52LY112.82223.40.41铸铝ZL22.810.230.240・33~0・34.66~4.926ZL52.580.2450.25507218・21ZL102.650.190.210.385.27~5.57ZL142.70.220.230.35~0.455・88~6.67碳钢10钢7.8511.60.8080.13245钢7.8111.590.5020.132不锈钢lCrl8Ni9~^790.0390.0420・1630.73lCrl8Ni9Ti7.750・0390・0420.1630.73GB5832.2-86气体中微量水分的测定-露点法i适用范围本标准适用于氧、氮、氢、氦、氖、氩、氪、氙、二氧化碳等气体中微量水分露点的测定。其测量范围0°C〜-70°C。2原理2.1术语说明水分露点——在恒定的压力下，气体中的水蒸气达到饱和时的温度。2.2方法原理本法用露点仪进行测定。使被测气体在恒定压力下，以一定的流量流...
