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精選不同溫度下空氣中飽和水分含量及飽和蒸汽壓.doc
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精選不同溫度下空氣中飽和水分含量及飽和蒸汽壓————————————————————————————————作者:————————————————————————————————日期: 蘭州真空設備有限責任公司溫度℃飽和水分含量g/m3飽和蒸汽壓Pa溫度℃飽和水分含量g/m3飽和蒸汽壓Pa4050.917368.624-121.81217.38243846.006618.708-141.52181.28523641.515935.392-161.27150.78243437.405314.68-181.06125.07483233.644483.512-200.888103.36323030.304238.42-220.73685.2482827.203776.22-240.59070.06322624.303357.972-260.50457.2762421.802981.016-280.41446.75322219.402641.356-300.34038.09522017.302336.33-320.27730.76921815.362061.936-340.22624.90841613.631815.516-360.18420.11321412.051597.068-380.14916.11721210.681401.264-400.12012.9204109.351226.77-420.09610.256488.281072.26-440.0778.125267.28933.732-460.0616.393646.39812.52-480.0495.061625.60704.628-500.0383.862804.85609.923-520.0303.0636-24.14516.816-540.0242.3976-43.52436.896-560.0181.8648-63.00368.298-580.0141.4652-82.54309.8232-600.0111.0656-102.14259.74-900.0093粘滯流下20℃空氣的管道流導《真空設計手冊》項目公式長管短管矩形截面直管a/b1.00.90.80.70.60.50.40.30.20.1Kf1.000.990.980.950.900.820.710.580.420.23環形管道橢圓管道孔當時,當時,當時,符號意義單位U粘滯流下20℃空氣流導m3/Sd管道直徑ml管道長度ma、b橢圓長半軸,短半軸m管道中平均壓力PaA0孔面積m2x孔兩側壓力比粘滯流—分子流下管道流導Un.f.20℃=d:管道直徑ml:管道長度m:管道中平均壓力=(P1+P2)/2分子流下20℃空氣的管道流導《真空設計手冊》項目公式圓長管圓孔圓短管L/d00.050.10.20.40.60.8a10.9650.9310.870.7690.690.6251.0246810204060801000.5720.40.250.1820.1430.1170.06250.0320.020.0010正方形矩形b/a10.6670.5000.3330.2000.1250.100Kf1.1081.1261.1511.1981.2971.4001.444等邊三角形扁縫形a>>bl/b0.10.20.40.81Kb0.0360.0680.130.220.26234510>100.400.520.600.670.941環形d2/d100.2590.50.7070.8660.966Ka11.0721.1541.2541.4301.675橢圓形錐形直角彎管按直管計算,管道計算長度縮孔符號:——流導(L/s)a和b——橢圓長半軸、短半軸——管長(cm)——面積(cm2)——管道直徑(cm)材料物理性能組別牌號重度g/cm3膨脹系數d×106導熱系數卡/厘米.秒.度電阻系數Ω.mm2/m熔點℃純銅T18.920℃17.70.961083T28.917.70.951080T48.8917.40.431080黃銅H908.818.20.40.039H808.6519.10.340.054H658.4720.10.2880.069H628.4320.60.260.071純鋁20~100℃20~200℃L62.712424.80.54658L42.712424.80.52LY112.82223.40.41鑄鋁ZL22.810.230.240.33~0.354.66~4.926ZL52.580.2450.2550.218.21ZL102.650.190.210.385.27~5.57ZL142.70.220.230.35~0.455.88~6.67碳鋼10鋼7.8511.60.8080.13245鋼7.8111.590.5020 內容來自淘豆網www.kpwxny.live轉載請標明出處.
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