Table A-4

Properties of Dry Air*

(at 14.696 psia or 29.92 !n. Hg)

Volume, I>cn~ity, Specific Heat, Cu. Ft. Btu to

T.emp., Cu . Ft. Lb . per Btu per Lb. Warmed 1F Raise
F per Lb. Cu. Ft. perF By 1 Btu 1 Cu . Ft. 1F

-so IO .,p8 .09082 0 . 240 43 ·034 .02324 38

-40 10 . 580 .OQ452 0 . 240 44 ·084 .02268 39
-JO 10 .832 .09232 0 . 240 45 · 1,34 .02216 40
-20 11 .084 .09022 0 . 240 40 . I 84 .02105 41
-IO II ·.B6 .oR821 0 . 240 47 . 2,34 .02117 42
0 II . sR9 .oll629 0 . 240 4.'1 . 21\9 .02071 43
I II . 614 . oRf>JO 0 240 48 392 .02066 44
2 II .6_w .0H592 0 . 2'10 411 490 .02002 45
II 664 .oR 57.\ 0 . 240 48 .6oo .02058 40
-~
4 I I .6R9 oH555 0 . 240 48 705 . 0205 .~ 47
II 715 . oRs .~6 0 . 240 4R 813 .02049 48
5
6 I I · 740 .oR518 0 . 240 4R 917 .02044 49
7 II · 765 .oHsoo 0 . 240 49 .021 .02040 so
R I I 790 .0H482 0 . 240 4Q . ils .02036 51
9 I I . 816 . 0H46.3 0 240 49 2,,4 .02031 52
10 II .841 .0H445 0 . 240 49 ·.B H .02027 53
II 11 . 866 08427 0 . 240 49 ·442 .02023 54
12 II . RQI .01\410 0 . 240 49 · 540 .0201R 55
13 II . 917 .08391 0 . 240 49 6ss .02014 so
14 I I .942 .o8,\ i4 0 . 240 49 759 .02010 57
IS II .QOi o8Js6 0 . 240 49 .86.3 .02005 s8
16 11 . 992 08339 0 . 240 49 ·967 .02001 59
I 2 . OJ7 .08322 0 . 240 so 071 .01997 6o
17
18 12 .043 .08304 0 . 240 50 . 18o 01993 61
12 .o6R .08286 0 . 240 so . 284 .01989 62
19
20 I 2. 093 .08269 0 . 240 50 .J88 .01985 63
21 12 . 118 .08252 0 . 240 50 ·492 .01981 64
.08235 0 . 240 so . 596 .019i6 6s
22 12 . 143
66
23 12 . 169 .08218 0 . 240 so. 705 .01972
.08201 .01968 67
24 12 . 11}4 0 . 240 so .8o9
68
25 12 . 219 .08184 0 . 240 so 913 .01964
09
26 12 . 244 . oill67 0 . 240 51 .017 .0196o
70
27 12.209 .08151 0 . 240 51 . 121 .01956
71
28 12 . 295 .08133 0 . 240 51.230 .01952
72
29 12 .J20 .08177 0 . 240 51 ·3.34 .01(,148
73
JO !2 .345 .o81oo 0 . 240 51 . 438 .01944
74
31 12 . J70 .08084 0 . 240 5 I. 542 .01940
75
32 12 . J90 .o8o67 0 . 240 51 .050 .01936
76
33 12.421 .o8o51 0 . 240 SI. 7 55 .01932
77
34 12 . 446 .oRo35 0 . 240 51.859 .01928
78
35 12 . 471 .08019 0 . 240 51 .963 .01924
79
36 12 . 490 .08003 0 . 240 52 .00i .01921 8o
37 12 . 522 .0;986 0 . 240 52.J75 .01917
 Table A-4 (Cont.)

Volume, Density, Specific Heat, Cu. Ft. Btu to

1 to Cu. Ft. Lb. per Btu per Lb. Warmed IF Raise
Temp.,
liSC
;;-t. 1F F per Lb. Cu. Ft. perF By I Btu I Cu. Ft. IF

38 12 547 .07970 0 . 240 52 28o .OI91 3

!24
39 I 2. 572 .07954 0 . 240 52 384 .01909
!68
40 I 2 · 597 .07938 0 . 240 52 4X7 .01905
! 16
41 I2 622 .079 23 0 . 240 52 59 2 .OI901
65 0 {!40 52 . 700 .01898
;q 42 I 2.648 07906
43 I 2. 67 3 .0789 1 0 . 240 52 .8os .01894
>71
44 I2 .698 .o787 5 0 240 52 ·909 .OIXI)O
>66
>62 45 12 . 723 .0786o 0 . 240 53 .01 3 .01886
46 I2 . 748 07844 0 . 240 53 · I I 7 .OI8X 2
>58
153 47 I 2. 774 .07828 0 . 240 53 · 225 .01 879
48 12 . 799 .07813 0 . 240 53 ·33° .01 875
>49
49 I2 .824 .07798 0 . 240 53 ·434 .01871 i
l44
so I2 .849 .07783 0 . 240 53 · 538 .o J!l68
>40
51 I2 .874 . 07768 0 . 240 53 ·64 2 .OI864
>36
52 I2 .900 .07752 0 . 240 53 759 .o r8t>o
>JI
>27 53 I2 .925 .07737 0 . 240 53 .855 .OI857
54 I2 .950 .07722 0 . 240 53 ·959 . o 1X5 .~
>2 3
H8 55 I 2 ·975 .07707 0 . 240 54 ·003 .01 X50
s6 I3 .00I .07692 0 . 240 54 . I 71 .o!l)46
>14
l!O 57 IJ .026 .07677 0 . 240 54·275 .01 !:> 42
58 IJ .05I .07662 0 . 240 54 ·38o .01 X39
lOS
)()J 59 IJ .076 .07648 0 . 240 54 ·484 .OI8 35
6o lJ . IOI .07633 0 . 240 54 · 588 .01 8J 2
197 .o1X28
6I .JJ . I27 .076I8 0 . 240 54 ·696
193 0 . 240 .01!!25
62 1J . I 52 .076o3 54 .800
189
63 1J . I77 .07589 0 . 240 54 ·905 .OIX21
185 .OI818
64 13 . 202 .07575 0 . 240 55 ·009
18I
65 13 . 227 .07560 0 . 240 55 · 113 .01814
176 0 . 240 .01811
66 IJ . 25J .07545 55 . 221
172 0 . 240 .011!08
67 I3 . 278 .0753I 55 ·325
,68
68 13 .303 · 0 7517 0 . 240 55 ·430 .01!lo4
164 13 .32,8 .07503 o . 240 .01801
69 55 · 534
,6o o . 240
70 13 ..353 .07489 ss.63!! .0'797
'56 71 13 ·379 .07474 0 . 240 55 · 746 .01794
t52 72 13 .404 .0746o 0 . 240 ss .8so .01791
t48 I3 .429 .07447 0 . 240 55 ·955 .01787
73
'44 74 13 ·454 .07433 0 . 240 s6 .os9 .OI784
t40 13 .480 .07418 0 . 240 s6 . 167 .o178o
75
',~6 76 I3 . 505 .07405 0 . 240 56 . 271 .01777
'32 77 13 · 530 .07391 0 . 240 s6.375 .OI774
28 78 13 · 555 .07377 0 . 240 s6 .4&> . OI 771
24 79 I3 . s8o .07364 0 . 240 s6 . s!:l4 .01767
21 8o 1J .6o6 .07350 o a4o s6 .692 .01764
17
 Table A-4 (Cont.)

Volume, Density, SpecifiC Heat, Cu. Ft. Btu to

Temp., Cu. Ft. Lb. per Btu per Lb. Warmed 1F Raise
F per Lb. Cu. Ft. perF By 1 Btu 1 Cu. Ft. IF
81 1 .~ 6 .~1 . 07336 0 . 240 s6 796 .oq61 •
82 I3 6s6 .07.323 0 . 240 s6 .9oo .01757
8J IJ 681 .Oj309 0 . 240 57 ·005 .01754
84 13 706 .07296 0 . 240 57 . I09 .0175I
8s I3 732 .07282 0 . 240 57-217 .01748
86 13 . 757 .07269 0 . 240 57 -32I .01745
87 I3-782 .07256 0 . 240 57 -425 .OI74I
88 13 .807 .07243 0 . 240 57 -530 .01738
89 1,3 .832 .07230 0 . 240 57 -634 .OJ735
90 I 3 .8 58 .072I6 0 . 240 57 742 .01732
91 I 3 . 88,~ .07203 0 240 57 -846 .OJ729
92 I3 .908 .07190 0 . 240 57 ·950 .01726
9 .~ I3 -933 .07177 0 . 240 sB .oss .01723 2
2
94 13 -959 .07164 0 . 240 5816 3 .01719
95 1.) . 984 .071SI 0 . 240 sB ·267 .017I6
96 14 .009 07138 0 . 240 s8 .371 .01713
2
97 14.034 .07126 0 . 240 58 .47s ." 01710
2
98 l4 .0S9 .07113 0 . 240 s8 . 58o .OJ70j
2
99 14 .o8s .07100 0 . 240 s8.688 .01704 2
100 14 . 110 .07087 0 . 240 S8 · 792 .oqot 2
I01 14 . 135 .07075 0 . 240 58 .896 .01698 2
102 14 . 160 .07062 0 . 240 S9 ·000 .01695 J
103 14 . I8S .07050 0 . 240 59 . 105 .01692 3
104 14 . 211 .07037 0. 240 S9 · 21 3 .01689 3
105 14 . 236 .07024 0. 240 59 3I7 .OI686 3
I 10 I4 -362 .o6963 0 . 240 S9 ·842 .01671 3
IIS 14 -488 .06902 0 . 240 00 .367 .01656 3
I20 14 .614 .o6843 0 . 240 6o .892 .OI642 3
125 I4 -740 .06784 0 . 240 61. 4I 7 .OI628 J
130 14.866 .06727 0 . 241 6I .68s .OI621 3
IJS 14 -992 .o667o 0 . 241 62 . 208 .ot6o8
140 15 . 118 .o6615 0 . 24I 62 . 731 .OI594
I45 IS . 244 .o6s6o 0 . 241 63 . 253 .OIS8I
ISO IS-370 .o6so6 0 . 241 63 . 776 .01568
15S 15 -496 .06453 0 . 241 64 . 299 .01555
100 IS .622 .06401 0 . 241 64 .822 .OI543
165 IS -748 .06350 0 . 241 65·345 .01530
qo 15 .874 .06300 0 . 241 6 5 .868 .0151 8
175 16 .001 .o6:zso 0 . 241 66 .J95 .01506
18o 16 . 127 .o6201 0 . 241 66 .917 .01494
185 16 . 253 .06153 0 . 241 67 -440 .01483
 Table A-4 (Cont.)

to Volume, Density, Specific Hcat, Cu. Ft. Btu to

ise T emp., Cu. Ft. LL. per Btu per Lb . Warmed IF Raise
t. IF F per Lb. Cu. Ft. perF By 1 Btu 1 Cu . Ft. 1F
'61 I • 190 16 3i9 .06105 0 . 241 67 .<)63 .014 71
57 195 16 . 505 .o6o57 0 . 241 68 .4R5 .01400
54 200 16.631 .o6o13 0 . 241 69 .008 .01449
'51 205 16. 757 .05967 0 . 241 6.9 · 531 .014311
48 :no 16 .883 .05924 0 . 241 70.054 .01428
45 215 17 .009 .os879 0 . 241 70 . 577 .01417
41 220 I7 . 135 .o5834 0.242 7o .8o6 . OJ422
38 225 17 . 262 · 0 5793 0 . 242 71 .331 .01420
35 230 I7 . 388 · 0 5750 0 . 242 71.851 .01392
32 235 I]. 514 .05711 0 . 242 72 -372 .01382
29 240 I7 .640 .o5669 0 . 242 72 . 893 .01372
26 245 17-766 .05027 0 . 242 73 -413 .01362
23 250 I7 .892 · 0 559° 0 . 242 73 ·934 · 01 353
19 255 18 .o18 · 0 5549 0. 242 74 -455 .01343
16 26o IS . 144 · 0 55 13 0 . 242 74 -975 .01334
265 I 8 . 270 .05473 0 . 242 75-496 .01325
13
270 18 .396 .05435 0 . 242 76.oq .01315
10
275 18.522 .05400 0 . 242 76 · 537 .01307
Oj
28o !8 .648 .05362 0 . 242 77 .o58 .01298
04 18. 774 .05328 0 . 243
285 77.259 .01294
01 18 .QOO .05291 0 . 243 .01286
290 77.778
98 295 19.026 · 0 52 55 0 . 243 78.296 .01278
95 300 19. 153 .05222 0 . 243 78.819 .01269
92 310 ..19 . 405 .05152 0. 243 79.856 .01252
89 320 19.657 .o5o86 0 . 243 8o .893 .01236
86 330 19 -909 .05023 0 . 243 8! ·930 .01221
71 340 20 . 161 .04960 0.244 82 .627 .01210
s6 350 20.413 .04900 0 . 244 83 .66o .OI 195
42 360 2o .665 .04838 o . 244 84.693 .01181
28 370 20,918 .04870 0. 244 8s . 730 .01665
21 38o 21. I 70 .04724 0 . :145 86 .408 .Oil 57
3IJO 21. 422 .04669 o. 245 87 ·437 .01144
o8
400 21.674 .04615 o. 245 88 .465 .01130
94 410 21.926 .04560 0 . :146 89 . 130 .01122
81 420 22.178 .04509 0. 246 90 -154 .01 10<)
68 430 22 .430 .04458 0. 246 91.179 .01097
55 440 22.683 .04409 0. 246 92 . 207 .01084
43 450 22.935 .04359 0 . 247 92.854 .01077
30 46o 23 . 187 .04312 0 . 247 93 ·874 .Oio65
18 470 23 -439 .04266 0. 248 94 -512 .01058
o6 48o 23 .691 .04221 0 . 249 95. 145 .01051
490 23 -943 .04177 0 . 249 96 . 157 .01040
94
500 24 . 195 .04134 0 . 249 97 . 16Q .01029
83 -------- -- - - - - ---- -

*Reprinted from Handbook of Air Condition, Heating and Ventilating, 2nd ed., with permission from The Industrial
Press, New York, 1965.