Properties of Air at 1 atm Pressure

Heat Transfer Engineering
Thermodynamics
Engineering Physics

Properties of air at 1 atm pressure

Temp
T, °C
Density
ρ, kg/m3
Specific
Heat
cρ
Thermal
Conductivity
k, W/m•K
Thermal
Diffusivity
α, W/m•K
Dynamic
Viscosity
µ, kg/m•s
Kinematic
Viscosity
ν, m2/s
Prandtl
Number
Pr
-150
2.866
983
0.01171
4.158 x 106
8.636 x 106
3.013 x 106
0.7246
-100
2.038
966
0.01582
8.036 x 106
1.189 x105
5.837 x 106
0.7263
-50
1.582
999
0.01979
1.252 x105
1.474 x105
9.319 x 106
0.7440
-40
1.514
1002
0.02057
1.356 x105
1.527 x105
1.008 x105
0.7436
-30
1.451
1004
0.02134
1.465 x105
1.579 x105
1.087 x105
0.7425
-20
1.394
1005
0.02211
1.578 x105
1.630 x105
1.169 x105
0.7408
-10
1.341
1006
0.02288
1.696 x105
1.680 x105
1.252 x105
0.7387
0
1.292
1006
0.02364
1.818 x105
1.729 x105
1.338 x105
0.7362
5
1.269
1006
0.02401
1.880 x105
1.754 x105
1.382 x105
0.7350
10
1.246
1006
0.02439
1.944 x105
1.778 x105
1.426 x105
0.7336
15
1.225
1007
0.02476
2.009 x105
1.802 x105
1.470 x105
0.7323
20
1.204
1007
0.02514
2.074 x105
1.825 x105
1.516 x105
0.7309
25
1.184
1007
0.02551
2.141 x105
1.849 x105
1.562 x105
0.7296
30
1.164
1007
0.02588
2.208 x105
1.872 x105
1.608 x105
0.7282
35
1.145
1007
0.02625
2.277 x105
1.895 x105
1.655 x105
0.7268
40
1.127
1007
0.02662
2.346 x105
1.918 x105
1.702 x105
0.7255
45
1.109
1007
0.02699
2.416 x105
1.941 x105
1.750 x105
0.7241
50
1.092
1007
0.02735
2.487 x105
1.963 x105
1.798 x105
0.7228
60
1.059
1007
0.02808
2.632 x105
2.008 x105
1.896 x105
0.7202
70
1.028
1007
0.02881
2.780 x105
2.052 x105
1.995 x105
0.7177
80
0.9994
1008
0.02953
2.931 x105
2.096 x105
2.097 x105
0.7154
90
0.9718
1008
0.03024
3.086 x105
2.139 x105
2.201 x105
0.7132
100
0.9458
1009
0.03095
3.243 x105
2.181 x105
2.306 x105
0.7111
120
0.8977
1011
0.03235
3.565 x105
2.264 x105
2.522 x105
0.7073
140
0.8542
1013
0.03374
3.898 x105
2.345 x105
2.745 x105
0.7041
160
0.8148
1016
0.03511
4.241 x105
2.420 x105
2.975 x105
0.7014
180
0.7788
1019
0.03646
4.593 x105
2.504 x105
3.212 x105
0.6992
200
0.7459
1023
0.03779
4.954 x105
2.577 x105
3.455 x105
0.6974
250
0.6746
1033
0.04104
5.890 x105
2.760 x105
4.091 x105
0.6946
300
0.6158
1044
0.04418
6.871 x105
2.934 x105
4.765 x105
0.6935
350
0.5664
1056
0.04721
7.892 x105
3.101 x105
5.475 x105
0.6937
400
0.5243
1069
0.05015
8.951 x105
3.261 x105
6.219 x105
0.6948
450
0.4880
1081
0.05298
1.004 x 104
3.415 x105
6.997 x105
0.6965
500
0.4565
1093
0.05572
1.117 x 104
3.563 x105
7.806 x105
0.6986
600
0.4042
1115
0.06093
1.352 x 104
3.846 x105
9.515 x105
0.7037
700
0.3627
1135
0.06581
1.598 x 104
4.111 x105
1.133 x 104
0.7092
800
0.3289
1153
0.07037
1.855 x 104
4.362 x105
1.326 x 104
0.7149
900
0.3008
1169
0.07465
2.122 x 104
4.600 x105
1.529 x 104
0.7206
1000
0.2772
1184
0.07868
2.398 x 104
4.826 x105
1.741 x 104
0.7260
1500
0.1990
1234
0.09599
3.908 x 104
5.817 x105
2.922 x 104
0.7478
2000
0.1553
1264
0.11113
5.664 x 104
6.630 x105
4.270 x 104
0.7539

Note: For ideal gases, the properties cρ, k, µ, and Pr are independent of pressure. The properties ρ, ν, and α at a pressure P (in atm) other than 1 atm are determined by multiplying the values of ρ at the given temperature by P and by dividing v and α by P.

Source: Data generated from the EES software developed by S. A. Klein and F. L. Alvarado. Original sources: Keenan, Chao, Keyes, Gas Tables, Wiley, 1984; and Thermophysical Properties of Matter. Vol. 3: Thermal Conductivity, Y. S. Touloukian, P. E. Liley, S. C. Saxena, Vol. 11: Viscosity, Y. S. Touloukian, S. C. Saxena, and P. Hestermans, IFI/Plenun, NY, 1970, ISBN 0-306067020-8.

Contribute Article
Spider Optimizer

© Copyright 2000 - 2017, by Engineers Edge, LLC www.engineersedge.com
All rights reserved
Disclaimer | Feedback | Advertising | Contact


User Reviews/Comments:

There are currently no comments available.


Add a Comment (you must be logged in to post comment Register):
Name:
Email: (Optional)
Comment: