水的粘度計算表

1、精品資料水的黏度表（040C）溫度 T粘度卩Pa s 或N s m-2溫度 T粘度卩Pa s 或KcKN s m-21.7921X1.0000X0273.161.792110-320.2293.361.000010-31.7313X0.9810X1274.161.731310-321294.160.981010-31.6728X0.9579X2275.161.672810-322295.160.957910-31.6191X0.9358X3276.161.619110-323296.160.935810-31.5674X0.9142X4277.161.567410-324297.160.914

2、210-31.5188X0.8937X5278.161.518810-325298.160.893710-31.4728X0.8737X6279.161.472810-326299.160.873710-3精品資料7280.161.42841.4284X10-327300.160.85450.8545X10-38281.161.38601.3860X10-328301.160.83600.8360X10-39282.161.34621.3462X10-329302.160.81800.8180X10-310283.161.30771.3077X10-330303.160.80070.8007X

3、10-311284.161.27131.2713X10-331304.160.78400.7840X10-312285.161.23631.2363X10-332305.160.76790.7679X10-313286.161.20281.2028X10-333306.160.75230.7523X10-314287.161.17091.1709X10-334307.160.73710.7371X10-315288.161.14041.1404X10-335308.160.72250.7225X10-316289.161.11111.1111X36309.160.70850.7085X精品資料

4、10-310-317290.161.08281.0828 X10-337310.160.69470.6947X10-318291.161.05591.0559X10-338311.160.68140.6814X10-319292.161.02991.0299X10-339312.160.66850.6685X10-320293.161.00501.0050X10-340313.160.65600.6560X10-3水的物理性質(zhì)溫度t/c飽和蒸氣壓p/kPa密度P/kg m-3焓H/kJ kg-1比定壓熱容Cp/kJ kg-1K-1導熱系數(shù)入/10-2W m-1K-1粘度卩/10-5Pa s體積

5、膨脹系數(shù)a/10-4K-1表面張力c/10-3N m-1普蘭德數(shù) Pr00.6082999.904.21255.13179.210.6375.613.66101.2262999.742.044.19757.45130.770.7074.19.52202.3346998.283.904.18359.89100.501.8272.67.01精品資料304.2474995.7125.694.17461.7680.073.2171.25.42407.3766992.2165.714.17463.3865.603.8769.64.325012.31988.1209.304.17464.7854.944.

6、4967.73.546019.932983.2251.124.17865.9446.885.1166.22.987031.164977.8292.994.17866.7640.615.7064.32.548047.379971.8334.944.19567.4535.656.3262.62.229070.136965.3376.984.20867.9831.656.9560.71.96100101.33958.4419.104.22068.0428.387.5258.81.76110143.31951.0461.344.23868.2725.898.0856.91.61120198.64943

7、.1503.674.25068.5023.738.6454.81.47130270.25934.8546.384.26668.5021.779.1752.81.36140361.47926.1589.084.28768.2720.109.7250.71.26150476.24917.0632.204.31268.3818.6310.348.61.18160618.28907.4675.334.34668.2717.3610.746.61.11170792.59897.3719.294.37967.9216.2811.345.31.051801003.5886.9763.254.41767.45

8、15.3011.942.31.001901255.6876.0807.634.46066.9914.4212.640.80.96精品資料2001554.77863.0852.434.50566.2913.6313.338.40.932101917.72852.8897.654.55565.4813.0414.136.10.912202320.88840.3943.704.61464.5512.4614.833.80.892302798.59827.3990.184.68163.7311.9715.931.60.882403347.91813.61037.494.75662.8011.4716.

9、829.10.872503977.67799.01085.644.84461.7610.9818.126.70.862604693.75784.01135.044.94960.8410.5919.724.20.872705503.99767.91185.285.07059.9610.2021.621.90.882806417.24750.71236.285.22957.459.8123.719.50.892907443.29732.31289.955.48555.829.4226.217.20.933008592.94712.51344.805.73653.969.1229.214.70.97

10、3109877.96691.11402.166.07152.348.8332.912.31.0232011300.3667.11462.036.57350.598.5338.210.01.1133012879.6640.21526.197.24348.738.1443.37.821.2234014615.9610.11594.758.16445.717.7553.45.781.3835016538.5574.41671.379.50443.037.2666.83.891.6036018667.1528.01761.3913.98439.546.671092.062.36精品資料37021040

11、.9450.51892.4340.31933.735.692640.486.80F3Viscosity decreases with pressure(at temperatures below 33 C)Viscous flow occurs by molecules movi ng through the voids that exist betwee nthem. As the pressure in creases, the volume decreases and the volume ofthese voids reduces, so no rmally in creas ing

12、pressure in creases the viscosity.SEdEwaoa(AoEncQ400 +：600 8001000?Preiitrre, MPa廠亠廠亠*精品資料Waters pressure-viscosity behavior 534 can be explained by the increasedpressure (up to about 150 MPa) causing deformation, so reducing the strengthof the hydrogen-bonded network, which is also partially respon

13、sible for theviscosity. This reduction in cohesivity more than compensates for the reducedvoid volume. It is thus a direct consequence of the balance between hydrogenbonding effects and the van der Waals dispersion forces 558 in water;hydrogen bonding prevailing at lower temperatures and pressures.

14、At higherpressures (and densities), the balance between hydrogen bonding effects andthe van der Waals dispersion forces is tipped in favor of the dispersion forcesand the remaining hydrogen bonds are stronger due to the closer proximity ofthe contributing oxygen atoms 655. Viscosity, then, increases with pressure.The dashed line (opposite) indicates the viscosity minima.精品資料lOOC100 200.Pressure, MPaThe variati on of viscosity with pressure and temperature has bee n used asevide nee that the viscosity is determ ined more by the exte nt of hydroge n精品資料bonding rather tha n hydroge n