Question

干空气的物理性质是什么？

Answer 1

你自己看下 

干空气的物理性质

温度t/℃ 密度ρ/kg·m-3 比定压热容cp/kJ·kg-1·K-1 导热系数λ/10-2W·m-1·K-1                                                                                      粘度μ/10-5Pa·s 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 0.712

0 1.293 1.009 2.442 1.72 0.707

10 1.247 1.009 2.512 1.76 0.705

20 1.205 1.013 2.593 1.81 0.703

30 1.165 1.013 2.675 1.86 0.701

40 1.128 1.013 2.756 1.91 0.699

50 1.093 1.017 2.826 1.96 0.698

60 1.060 1.017 2.896 2.01 0.696

70 1.029 1.017 2.966 2.06 0.694

80 1.000 1.022 3.047 2.11 0.692

90 0.972 1.022 3.128 2.15 0.690

100 0.946 1.022 3.210 2.19 0.688

120 0.898 1.026 3.338 2.28 0.686

140 0.854 1.026 3.489 2.37 0.684

160 0.815 1.026 3.640 2.45 0.682

180 0.779 1.034 3.780 2.53 0.681

200 0.746 1.034 3.931 2.60 0.680

250 0.674 1.043 4.268 2.74 0.677

300 0.615 1.047 4.605 2.97 0.674

350 0.566 1.055 4.908 3.14 0.676

400 0.524 1.068 5.210 3.30 0.678

500 0.456 1.072 5.745 3.62 0.687

600 0.404 1.089 6.222 3.91 0.699

700 0.362 1.102 6.711 4.18 0.706

800 0.329 1.114 7.176 4.43 0.713

900 0.301 1.127 7.630 4.67 0.717

1000 0.277 1.139 8.071 4.90 0.719

1100 0.257 1.152 8.502 5.12 0.722

1200 0.239 1.164 9.153 5.35 0.724