水的体积膨胀系数

液化石油气组分及水的体积膨胀系数/-1 液化石油气组分及水的体积膨胀系数/-1温度/丙烷丙烯正丁烷异丁烷1-丁烯水0-100.002650.002830.001810.002330.001980.000029910-200.002580.003130.002370.001710.002060.0001420-300.003520.003290.001730.002970.002140.0002630-400.003400.003540.002270.002170.002270.0003540-500.004220.003890.002220.002660.002440.00042体积压缩系数 对于满液的容器，当温度升高时，液体的体积会膨胀，但由于受到容器容积的限制，液体将会受到压缩。体积压缩系数是指压力每升高1MPA时液体体积的减缩量。液化石油气体积膨胀系数体积压缩系数及其比值液化石油气体积膨胀系数体积压缩系数及其比值温度/体积膨胀系数/-1体积压缩系数/MPA-1比值/(MPA/)00.002150.001072.01100.002280.001161.97200.002460.001261.95300.002660.001381.93400.002920.001511.93500.003260.001681.84600.003130.001871.99由表1-7可以看出，体积膨胀系数和体积压缩系数的比值一般为1.8以上，这说明如果不考虑容器本身由于温度和压力的升高而产生的容积增量，则容器在满液情况下，温度一旦升高，就使得容器内压力急剧升高。水在不同温度下相对于4时其体积的膨胀系数。4 4 * Y. a3 8 P( cx* G& u温度 系数 温度 系数 温度 系数 K) F9 o r, b% l w* c/ $ U8 K0 0.00013 40 0.00782 75 0.02575# Y, E% A& E. C5 X3 K) $ u10 0.00025 45 0.00984 80 0.02898: B: vC( Y. yx, T9 i& m3 d L15 0.00085 50 0.01207 85 0.032362 u; B; |8 x1 ) G- i3 l( Q20 0.00180 55 0.01447 90 0.03590# - X2 Cw0 ?. p25 0.00289 60 0.01704 95 0.03958& X# X7 P. P s* o30 0.00425 65 0.01979 100 0.04342 P- _6 ?2 b R9 n& X! N6 y# _- M35 0.00582 70 0.02269; 8 G* L6 N; w; L% J/ R; Y + e水的体积膨胀系数是没有单位（或者是1）的，因为它只是一个比值。 A- Y! s4 z* d% X8 aDV=V1*t中的是指平均体积膨胀系数。2 a+ I* t; j I a. $ 3 6 水从20度加热到80度的平均体积膨胀系数=V/(V1*t).e水的膨胀率,即e=t,式中t为系统内最大水温差,为水的膨胀系数(/m3),知道系统水温后,可从有关手册中查出。或一般稀释水的膨胀系数为 0.025%/，故每 5 的温度变化可影响一般体积的测定。 水的物理性质 温度 ()饱和蒸汽压(kPa)密度(kg/m3 )焓(kJ/kg)比热kJ/(kg )导热系数 10 2 (W/ m )粘度 10 5 (Pa a)体积膨胀系数 10 -4 (1/ )表面张力 10 3 (N/m)普兰德数Pr01020304050607080901001101201301401501601701801902002102202302402502602702802903003103203303403503603700.60821.22622.33464.24747.376612.3419.92331.16447.37570.136101.33143.31198.64270.25361.47476.24618.28792.591003.51255.61554.771917.722320.882798.593347.913977.674693.755503.996417.247443.298592.949877.9611300.312879.614615.816538.518667.121040.9999.9999.7998.2995.7992.2988.1983.2977.8971.8965.3958.4951.0943.1934.8926.1917.0907.4897.3886.9876.0863.0852.8840.3827.3813.6799.0784.0767.0750.7732.3712.5691.1667.1640.2610.1574.4528.0450.5042.0483.90125.69167.51209.30251.12292.99334.94376.98419.10461.34503.67546.38589.08632.20675.33719.297807.63852.43897.65943.70990.181037.491085.641135.041185.281236.281289.951344.801402.161462.031526.101594.751671.371761.391892.434.2124.1914.1834.1744.1744.1744.1784.1784.1954.2084.2204.2334.2504.2664.2874.3124.3464.3794.4174.4604.5054.5554.6144.6814.7564.8444.9494.0705.2295.4855.7366.0716.5737.2438.1649.50413.98440.31955.1357.4559.8961.7663.3864.7865.9466.7667.4567.9868.0468.2768.5068.5068.2768.3868.2767.9267.4566.9966.2965.4864.5563.7362.8061.7660.4859.9657.4555.8253.9652.3450.5948.7345.7143.0339.5433.73179.21130.77100.5080.0765.6054.9446.8840.6135.6531.6528.3825.8923.7321.7720.1018.6317.3616.2815.3014.4213.6313.0412.4611.9711.4710.9810.5910.209.819.429.128.838.538.147.757.266.675.65-0.630.701.823.213.874.495.115.706.326.957.528.088.649.179.7210.310.711.311.912.613.314.114.815.916.818.119.721.623.726.229.232.938.243.353.466.810926477.175.674.172.671.069.067.565.663.861.960.05855.953.951.749.647.546.243.140.838.436.133.831.629.126.724.221.919.517.214.712.310.07.825.783.892.060.4813.669.527.015.424.323.542.982.542.121.961.761.611.471.361.261.181.111.051.000.960.930.910.890.880.870.860.870.880.890.930.971.021.111.221.381.602.366.08湿空气的性质 温度 湿度(kg/kg干空气)水蒸气压(kN/m 2 )水分浓度(kg/m 3 )汽化焓(kJ/kg)湿焓(kJ/kg干空气)湿容积(m 3/kg干空气)动粘度(10 6m 2/s)湿热(10-3kJ/kg)导热系数(W/m K)水分扩散系数(10 6 m 2 /s)024681012141618202224262830323436384042444648505254565860626466687072747678808284868890929496981000.0038210.0044180.0051000.0058680.0067490.0077330.0088490.0101050.0115130.0131080.0148950.0168920.0191310.0216350.0244350.0275580.0310500.0349500.0392890.0441360.0495320.0555600.0622780.0697780.0781460.0875160.0980180.109760.122970.137900.154720.173800.195410.220210.248660.281540.319660.364680.417900.480480.559310.655730.777810.937681.152441.458731.927182.731704.4267010.303060.61080.70540.81290.93461.07211.22711.40151.59741.81682.0622.3372.6422.9823.3603.7784.2414.7535.3185.9406.6247.3758.1989.01010.08511.16112.33513.61315.00216.50918.14619.9221.8423.9126.1428.5531.1633.9636.9640.1943.6547.3651.3355.5760.5064.9570.1175.6181.4687.6994.30101.3250.0048460.0055570.0063580.0072570.0082670.0093960.010660.012060.013630.015360.017290.019420.021770.024370.027230.030360.033800.037580.041710.046220.051440.056500.062330.068670.075530.082980.091030.099740.10910.11930.13020.14190.15450.16800.18260.19810.21460.23240.25140.27170.29330.31620.34060.36660.39420.42350.45450.48730.52210.55880.59772500.82495.92491.32486.62481.92477.22472.52467.82463.12458.42453.12449.02442.02439.52434.82430.02425.32420.52415.82411.02406.22401.42396.62391.82387.02382.12377.32372.42367.62362.72357.92353.02348.12343.12338.22333.32328.32323.32318.32313.32308.32303.22298.12293.02287.92282.82277.62272.42267.12261.92256.79.5513.0616.3920.7725.0029.5234.3739.5745.1851.2957.8665.0272.6081.2290.48100.57111.58123.72136.99151.60167.64185.40204.94226.55250.45277.04306.64339.51373.31417.72464.11516.57575.77643.51721.01810.36915.571035.601179.421348.401560.801820.462148.922578.733155.673978.425236.617395.4911944.3927711.340.77810.78450.79110.79770.80460.81160.81870.82610.83370.84150.84970.85110.86690.87610.88570.89580.90650.91780.92970.94250.95600.97060.98621.00301.02131.04101.06261.08611.11121.14051.17211.20731.24671.29101.34121.39861.46431.54111.63091.73751.86632.02472.22382.48102.82353.30474.0295.2387.66214.93913.2513.4313.6113.7913.9714.1514.3414.5214.7114.8915.0815.2715.4615.6515.8416.0316.2216.4116.6116.8017.0017.2017.3916.5917.7917.9918.1918.3918.5918.7918.9919.1919.3819.5719.7619.9420.0120.2820.4420.5820.7120.8120.902.09620.9920.9920.9420.8420.6920.4720.080.01081.01201.01341.01491.01671.01861.02081.02331.02601.02911.03251.03641.04071.04551.05091.05691.06351.07101.07931.08851.09891.11031.12321.13751.15341.17131.19131.21371.23891.26731.29941.33571.37701.42411.47821.54181.61321.69861.79941.91992.06642.24772.47672.77393.17083.73044.5745.9878.82017.338023800.024130.024270.024400.024540.024660.024780.024900.025000.025110.025200.025290.025370.025440.025080.025560.025610.025650.025670.025690.025690.025690.025660.025630.025580.025520.025450.025360.025260.025140.025010.024870.024710.024550.024370.024180.023990.023790.023600.023410.023230.023070.022940.022850.022810.022830.022950.023180.023550.024090.0248622.222.422.622.823.123.323.623.924.224.524.825.225.525.926.326.627.027.427.828.328.729.129.630.030.530.931.431.932.432.933.434.034.535.135.736.336.937.638.339.039.840.741.542.543.644.746.047.449.050.852.8对流干燥蒸发1kg水需要的空气量(kg)，计算值出口温度 进口温度 70 80 90 100 110 120 130 140 150 160 120 55.6 71.4 85.5 130 41.7 50.0 62.5 140 37.0 43.5 52.6 66.7 150 31.3 35.7 43.5 52.6 160 28.6 32.3 37.0 43.4 52.6 170 25.0 28.6 32.3 37.0 43.5 180 23.3 25.6 28.6 32.3 37.0 43.4 190 21.3 23.3 25.6 28.6 32.3 37.0 200 19.6 21.2 23.3 25.7 30.3 32.3 37.0 210 18.8 20.0 22.2 25.0 27.8 31.3 28.6 220 17.5 18.5 20.0 22.2 23.8 27.0 30.3 33.3 230 16.1 17.2 18.5 20.0 21.7 23.2 27.2 30.3 240 15.2 15.8 17.5 18.2 20.0 21.7 23.8 27.0 28.5 250 14.1 15.2 15.9 17.5 18.2 20.0 21.7 23.8 27.0 260 13.5 14.7 15.6 16.7 17.9 19.2 20.0 23.3 25.0 28.5 270 12.7 13.3 14.3 15.2 16.4 17.9 18.9 20.0 22.2 24.4 280 12.2 13.0 13.7 14.7 15.6 16.7 17.9 19.2 21.3 22.7 290 11.8 12.2 13.3 13.7 14.7 15.6 16.7 18.2 19.2 21.7 300 11.4 11.8 12.3 13.2 13.7 15.0 15.9 16.9 18.2 19.6 310 10.7 11.4 11.9 12.7 13.3 13.8 15.2 15.9 16.9 18.2 320 10.3 10.6 11.4 11.8 12.5 13.3 13.9 15.2 15.9 16.9 330 10.0 10.4 10.9 11.5 11.9 12.7 13.3 14.1 15.4 15.9 340 9.5 9.9 10.4 10.9 11.4 11.6 12.7 13.3 14.1 15.2 350 8.9 9.3 9.8 10.3 10.8 11.4 11.9 12.5 13.3 13.9 360 8.8 9.2 9.6 10.0 10.5 11.0 11.6 12.2 12.8 13.5 370 8.6 8.8 9.3 9.7 10.2 10.6 11.0 11.8 12.2 13.1 380 8.2 8.5 8.8 9.3 9.6 10.2 10.6 11.0 11.6 12.2 390 7.9 8.1 8.6 8.8 9.2 9.6 10.0 10.6 11.0 11.6 400 7.7 8.0 8.3 8.7 8.9 9.4 9.7 10.5 10.7 11.0 410 7.5 7.8 8.1 8.7 8.4 9.1 9.5 9.9 10.4 10.7 420 7.3 7.5 7.9 8.1 8.4 8.7 9.1 10.1 10.2 10.4 430 7.0 7.4 7.6 7.9 8.1 8.5 8.8 9.1 9.5 9.9 440 6.8 7.0 7.3 7.5 7.9 8.1 8.5 8.7 9.1 9.5 450 6.5 6.8 6.9 7.2 7.5 7.8 8.1 8.4 8.7 9.1 460 6.4 6.6 6.8 7.1 7.4 7.7 8.0 8.3 8.6 8.9 470 6.3 6.5 6.7 6.9 7.1 7.4 7.7 8.0 8.3 8.6 480 6.2 6.4 6.5 6.8 7.0 7.2 7.5 7.9 8.1 8.4 490 6.0 6.2 6.3 6.5 6.9 7.1 7.3 7.6 7.8 8.2 500 5.8 6.1 6.2 6.3 6.4 6.8 7.0 7.3 7.5 8.0 注：计算条件：环境温度为 10 ，相对湿度 80%