干空气的物理性质 温度t/C密度p/kgm -3比定压热容cp/kJkg-1K-1导热系数入/10-2Wm-1K-1粘度 W10-5Pas普兰德数Pr-50 1.584 1.013 2.035 1.46 0.728-40 1.515 1.013 2.117 1.52 0.728-30 1.453 1.013 2.198 1.57 0.723-20 1.395 1.009 2.279 1.62 0.716-10 1.342 1.009 2.360 1.67 0.7120 1.293 1.009 2.442 1.72 0.70710 1.247 1.009 2.512 1.76 0.70520 1.205 1.013 2.593 1.81 0.70330 1.165 1.013 2.675 1.86 0.70140 1.128 1.013 2.756 1.91 0.69950 1.093 1.017 2.826 1.96 0.69860 1.060 1.017 2.896 2.01 0.69670 1.029 1.017 2.966 2.06 0.69480 1.000 1.022 3.047 2.11 0.69290 0.972 1.022 3.128 2.15 0.690100 0.946 1.022 3.210 2.19 0.688120 0.898 1.026 3.338 2.28 0.686140 0.854 1.026 3.489 2.37 0.684160 0.815 1.026 3.640 2.45 0.682180 0.779 1.034 3.780 2.53 0.681200 0.746 1.034 3.931 2.60 0.680250 0.674 1.043 4.268 2.74 0.677300 0.615 1.047 4.605 2.97 0.674350 0.566 1.055 4.908 3.14 0.676400 0.524 1.068 5.210 3.30 0.678500 0.456 1.072 5.745 3.62 0.687600 0.404 1.089 6.222 3.91 0.699700 0.362 1.102 6.711 4.18 0.706800 0.329 1.114 7.176 4.43 0.713900 0.301 1.127 7.630 4.67 0.7171000 0.277 1.139 8.071 4.90 0.7191100 0.257 1.152 8.502 5.12 0.7221200 0.239 1.164 9.153 5.35 0.724 向左转|向右转温度tCo密度P Ikg/ni 3 )比热J (kj/kg, C )导热系数需冷成飒时t )粘度X10昔兰德数Pr-501. 5841. 0132. 0351.460. 728-401. 5151. 0132.1171.520. 728-301. 4531. 0132.1981.570. 723-201. 3951. 0092. 2791.620. 716-101. 3421. 0092. 3601.670. 71201. 2931. 0092. 4421.720. 707101. 2471. 0092. 5121.770. 705201. 2051. 0132. 5931.E10. 703301. 1651. 0132. 6751.360. 701如1. 12S1. 0132. 7561.910. 699501. 0931. 0172. 8261.960. 698