你自己看下
干空气的物理性质
温度t/℃x09密度ρ/kg·m-3 比定压热容cp/kJ·kg-1·K-1x09导热系数λ/10-2W·m-1·K-1x09 粘度μ/10-5Pa·sx09普兰德数Pr
-50x091.584x091.013x092.035x091.46x090.728
-40x091.515x091.013x092.117x091.52x090.728
-30x091.453x091.013x092.198x091.57x090.723
-20x091.395x091.009x092.279x091.62x090.716
-10x091.342x091.009x092.360x091.67x090.712
0x091.293x091.009x092.442x091.72x090.707
10x091.247x091.009x092.512x091.76x090.705
20x091.205x091.013x092.593x091.81x090.703
30x091.165x091.013x092.675x091.86x090.701
40x091.128x091.013x092.756x091.91x090.699
50x091.093x091.017x092.826x091.96x090.698
60x091.060x091.017x092.896x092.01x090.696
70x091.029x091.017x092.966x092.06x090.694
80x091.000x091.022x093.047x092.11x090.692
90x090.972x091.022x093.128x092.15x090.690
100x090.946x091.022x093.210x092.19x090.688
120x090.898x091.026x093.338x092.28x090.686
140x090.854x091.026x093.489x092.37x090.684
160x090.815x091.026x093.640x092.45x090.682
180x090.779x091.034x093.780x092.53x090.681
200x090.746x091.034x093.931x092.60x090.680
250x090.674x091.043x094.268x092.74x090.677
300x090.615x091.047x094.605x092.97x090.674
350x090.566x091.055x094.908x093.14x090.676
400x090.524x091.068x095.210x093.30x090.678
500x090.456x091.072x095.745x093.62x090.687
600x090.404x091.089x096.222x093.91x090.699
700x090.362x091.102x096.711x094.18x090.706
800x090.329x091.114x097.176x094.43x090.713
900x090.301x091.127x097.630x094.67x090.717
1000x090.277x091.139x098.071x094.90x090.719
1100x090.257x091.152x098.502x095.12x090.722
1200x090.239x091.164x099.153x095.35x090.724