Related Resources: thermodynamics
Ideal-Gas Properties Air
Ideal-Gas Properties of Air (English Units), Standard Entropy at 1 atm = 101.325 kPa = 14.696 lbf/in.2
Where:
T = Temperature
u = Specific internal energy
h = Specific enthalpy
s0T = Specific entropy
|
T
(R) |
u
(Btu/lbm) |
h
(Btu/lbm) |
s0T
(Btu/lbm R) |
|
400
|
68.212
|
95.634
|
1.56788
|
|
440
|
75.047
|
105.212
|
1.59071
|
|
480
|
81.887
|
114.794
|
1.61155
|
|
520
|
88.733
|
124.383
|
1.63074
|
|
536.67
|
91.589
|
128.381
|
1.63831
|
|
540
|
92.160
|
129.180
|
1.63979
|
|
560
|
95.589
|
133.980
|
1.64852
|
|
600
|
102.457
|
143.590
|
1.66510
|
|
640
|
109.340
|
153.216
|
1.68063
|
|
680
|
116.242
|
162.860
|
1.69524
|
|
720
|
123.167
|
172.528
|
1.70906
|
|
760
|
130.118
|
182.221
|
1.72216
|
|
800
|
137.099
|
191.944
|
1.73463
|
|
840
|
144.114
|
201.701
|
1.74653
|
|
880
|
151.165
|
211.494
|
1.75791
|
|
920
|
158.255
|
221.327
|
1.76884
|
|
960
|
165.388
|
231.202
|
1.77935
|
|
1000
|
172.564
|
241.121
|
1.78947
|
|
1040
|
179.787
|
251.086
|
1.79924
|
|
1080
|
187.058
|
261.099
|
1.80868
|
|
1120
|
194.378
|
271.161
|
1.81783
|
|
1160
|
201.748
|
281.273
|
1.82670
|
|
1200
|
209.168
|
291.436
|
1.83532
|
|
1240
|
216.640
|
301.650
|
1.84369
|
|
1280
|
224.163
|
311.915
|
1.85184
|
|
1320
|
231.737
|
322.231
|
1.85977
|
|
1360
|
239.362
|
332.598
|
1.86751
|
|
1400
|
247.037
|
343.016
|
1.87506
|
|
1440
|
254.762
|
353.483
|
1.88243
|
|
1480
|
262.537
|
364.000
|
1.88964
|
|
1520
|
270.359
|
374.565
|
1.89668
|
|
1560
|
278.230
|
385.177
|
1.90357
|
|
1600
|
286.146
|
395.837
|
1.91032
|
|
1650
|
296.106
|
409.224
|
1.91856
|
|
1700
|
306.136
|
422.681
|
1.92659
|
|
1750
|
316.232
|
436.205
|
1.93444
|
|
1800
|
326.393
|
449.794
|
1.94209
|
|
1850
|
336.616
|
463.445
|
1.94957
|
|
1900
|
346.901
|
477.158
|
1.95689
|
|
1950
|
357.243
|
490.928
|
1.96404
|
|
2000
|
367.642
|
504.755
|
1.97104
|
|
2050
|
378.096
|
518.636
|
1.97790
|
|
2100
|
388.602
|
532.570
|
1.98461
|
|
2150
|
399.158
|
546.554
|
1.99119
|
|
2200
|
409.764
|
560.588
|
1.99765
|
|
2300
|
431.114
|
588.793
|
2.01018
|
|
2400
|
452.640
|
617.175
|
2.02226
|
|
2500
|
474.330
|
645.721
|
2.03391
|
|
2600
|
496.175
|
674.421
|
2.04517
|
|
2700
|
518.165
|
703.267
|
2.05606
|
|
2800
|
540.286
|
732.244
|
2.06659
|
|
2900
|
562.532
|
761.345
|
2.07681
|
|
3000
|
584.895
|
790.564
|
2.08671
|
|
3100
|
607.369
|
819.894
|
2.09633
|
|
3200
|
629.948
|
849.328
|
2.10567
|
|
3300
|
652.625
|
878.861
|
2.11476
|
|
3400
|
675.396
|
908.488
|
2.12361
|
|
3500
|
698.257
|
938.204
|
2.13222
|
|
3600
|
721.203
|
968.005
|
2.14062
|
|
3700
|
744.230
|
997.888
|
2.14880
|
|
3800
|
767.334
|
1027.848
|
2.15679
|
|
3900
|
790.513
|
1057.882
|
2.16459
|
|
4000
|
813.763
|
1087.988
|
2.17221
|
|
4100
|
837.081
|
1118.162
|
2.17967
|
|
4200
|
860.466
|
1148.402
|
2.18695
|
|
4300
|
883.913
|
1178.705
|
2.19408
|
|
4400
|
907.422
|
1209.069
|
2.20106
|
|
4500
|
930.989
|
1239.492
|
2.20790
|
|
4600
|
954.613
|
1269.972
|
2.21460
|
|
4700
|
978.292
|
1300.506
|
2.22117
|
|
4800
|
1002.023
|
1331.093
|
2.22761
|
|
4900
|
1025.806
|
1361.732
|
2.23392
|
|
5000
|
1049.638
|
1392.419
|
2.24012
|
|
5100
|
1073.518
|
1423.155
|
2.24621
|
|
5200
|
1097.444
|
1453.936
|
2.25219
|
|
5300
|
1121.414
|
1484.762
|
2.25806
|
|
5400
|
1145.428
|
1515.632
|
2.26383
|
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