Document 70KGoKbwoem4pmmBDmBnD9kOg
American Society-of Heating and Ventilating Engineers Guide, 1931
' Table 5: Circumferences and Areas of Circles
Du meter
IN Inches
Area
.Sq. In. Sq. Ft.
CIRCUMFERENCE
laches
Feet
| DuMETER I ` n*
1 Inches '
Area Sq. In.. Sq. Ft
Circumference
.Inches
Feet
K : 0.049 0.0003 0.785' : 0.0652
28
615.8 ! 4.276
M Xj 1
0.196' 0.442 0.785
0.0014 0.0031 0.0054
1.571'- ! 0.1309 `2.356 0.1964 3.142 : 0.2618
28M 29 K
637.9 660.52 683.5
4.430
4.587 4.747
IK
1.227 0.0085
3.927 0.3273 . 30
706.8
4.909
1M .
1.767 0.0123
4.712 0.3927
31 *
754.8
5.241
IK 2.405- 0.0167 5.498' 0.4582 '
2
3.142 0.0218
6.283 0.5236
32 33
804.3 855.3
5.585 5.940
2K
3.976 0.0276
7.069 0.5891
34
907.9
6.305
2X
4.909 0.0341
;7.854 . 0.6546
35
962.1
6.681
2K 3,
'5.939 0.0412 7.069 0.0491
.8.639 9.425
0.7200 0.7854 .
36 '37
1018.0 1075.0
7.069 7.467
3K
8.296 0.6576- 10.21 . 0.8510 -
38 .
1134.0
7.876
3K
9.621 0.0668 10.99
0.9160
39
3K 11.04 0.0767 11.78 ' 0.9818 40
4
12.57 0.0873 12.57
1.047
41 ;
1195;0
1256.0 1320.0
8;296 8.727 9.168
4K 14.19 0.0986 13.35 ; 1.113
42
1385.0
9.621
4K
15.90- ` 0.1104 14.14
1.178
43 ' - 1452.0 10.08
454 ' v 17.72 0.1231 14.92
1.243
44
1521.0 10.56
5
. 19.64 0.1364 15.71
1.309 .
45
1590.0 11.04
5K
21.65 0.1504 16.49
1.374 ; < 46
' 1662.0 11.54
SH 23.76 0.1650 17.28 i 1.440
47
1735.0 12.05
5K
25.97 0.1840 18.06
1.505 / * 48
6
28.27 0.1964 18.85
1.571
49
1810.0 1886.0
12.51 13.09
6K
30.68 ' 0.2131 19.64 . 1.637
50
1963.0 13.64
- 6X
33.18 0.2304 20.42 ; ! 1.702
51 '
2043.0 14.19
6K
35.79 0.2486- 21.21
1.768
52
2124.0 14.75
7
38.49 0.2673 21.99
1.833
53
2206.0 15.32
7K '
41.28-' - 0.2867 22.78
1.899.
54
2290.0 - 15.90
m
44.18 0.3068 23.56
1.964 55
2376.0 16.50
.. 7K_- - 47.17,, 0.3276 24.35
2.029
56
2463.0 17.10 `
8
50.27 0.3491 25.13
2.094
57
2552.0 17.72
8K
53.46 0.3713 25.92
2.160
58
2642.0 18.35
8K
56.75 0.3942 26.70
2.225
59
2734.0 18.99
8K . 60.13 0.4175 . 27.49
2.291
60
2827.0 19.63
9
63.62 0.4418 28.27
2.356 | 61
9X
67.20 0.4668 " 29.06
2.422
' 62
2922.0 3019.0
20.29 20.97
9V4
70.88 0.4923 29.85
2.488
63
3117.0 21.65
9K 10
74.66 78.54
0.5185 30.63 0.5454 31.42
2.553 2.618
64 65
3217.0 3318.0
22.34 23.04
10K
86.59 0.6010 32.99
2.750 1 66
3421.0 23.76
11
95.03 0.6600 . 34.56
2.880 1 67
3526.0 24.48
UK
103.9
0.7215
36.13
3.011
68
3632.0 25.22
12
113.1
0.7854 37.70
3.142 1 69
^739.0 25.97
12K
122.7
0.8520 39.27
3.273
70
3848.0 26.73
13
132.7
0.9218 40.84
3.403
71
3959.0 27.49
13K
143.1
0.9937 42.41
3.535
72
4072.0 28.27
14
153.9
1.069
43.98
3.665
73
4185.0 29.07
I4K
165.1
1.146
45.55
3.796
74
4301.0 29.87
15
176.7
1.227
47.12
3.927
75
4418.0 30.68
15K
188.7
1.310
48.69
4.058
76
4536.0 31.SO
16
201.1
1.396
50.27
4:189
77
4657.0 32.34
I6K
213.8
1.485
51.84
4.321
78
4778.0 33.18
17
226.9
1.576
53.41
4.451
79
4902.0 34.04
17K
240.5
1.670
54.98
4.582
80
5027.0 34.91
18
254.S
1.767
56.55 : 4.712
81
5153.0 35.78
18M
268.8
1.867
58.12
4.845'
82
5281.0 36.67
19
283.5
1.969
59.69
4.974
83
5411.0 37.57
19K
298.6
2.074
61.26
5.105
84
5542.0 38.48
20
314.2 . 2.182'
62.83
5.236
85
5675.0 39.4!
20K
330.1
2.293
64.40
5.367
86
5809.0 40.34
21 346.4 2.405 65.97 5.498 v
87
5945.0 41.28
21K
361.1
2.508
67.54
5.629
88
6082.0 42.24
22
. 380.1
2.640
69.12
5.760
89
6221.0 43.20
22H
397.6
2.761
70.69
5.891
90
6362.0 44.18
23
415.5
2.885
72.26
6.021
91
6504.0 45.17
23H
433.7
3.012
73.83
6.153 .
92
6648.0 46.16
24
452.4
3.142
75.40
6.283
93
6793.0 47.17
24K ; 471.4
3.274
76.97
6.415
94
6940.0 48.19
25
490.9
3.409
78.54
6.545
95
7088.0 49. ?2
25K
510.7
3.547
80.11
6.676
96
7238.0 50.27
26
530.9
3.687
81.68 . 6.807
97
7390.0 51.32
26H
551.6
3.832
83.25
6.938
98
7543.0 52.38
27
572.6
3.976
84.82
7.069
99
7698.0 53.46
27K
593.9. - 4.125
86.39... . 7.199
100
7854.0. , 54.54 .
87.97
7.330
89.54
7.462
91.11
7.S92
92.63
7.725
94.25
7.854
97.39
8.116
100.5
8.378
103.7
8.639
106.8
8.901
109.9
9.163
113.1
9.425
116.2
9.686
119.4
9.948
122.5
10.21
125.6
10.47
128.8
10.73
131.9
10.99
135.1
11.26
138.2
11.52
141.4
11.78
`144.5
12.04 :
147.7
12.30
150.8
12.57
153.9
12.83
157.1
13.09
160.2
13.35
163.4
13.61
166.5
13.88
169.6
14.14
172.8
14.40
175.9
14.66
179.1
14.92
182.2
15.18
185.4
15.45
188.5
15.71
191.6
15.97
194.8
16.23
197.9
16.49
201.1
16.76
204.2
17.02
207.3
17.28
210.5
17.54
213.6
17.80
216.8
18-06
219.9
18.33
223.1
18.59 *
226.2
18.85
229.3
19.11
232.5
19.37
235.6
19.63
238.8
19.90
241.9
20.16
245.0
20.42
248.2
20.68-
251.3
20.94
254.5
21.21
257.6
21.47(
260.8
21.73'
263.9
21.99
267.0
22.25
270.2
22.51
273.3
22.78
276.5
23.04
279.6
23.30
282.7
23.56
285.9
..23.82
289.0 ' 24.09
292.2
24.35
295.3
24.61
298.4
24.87
301.6
25.f3
304.7 : 25.39
307.9 ' 25.66
311.0
25.92
314.2 26.18
18
Chapter 2--Physical Units and Tables
Table 6. Properties of Saturated Air (Standard Atmospheric Pressure of 29.921 in. of Mercury)
TempywATURB. Deo. Farr.
Vapor
Inches of Meecurt
0 0.0383 10 0-0631 20 0.1030 30 0.1640 40 0.2477 50 0.3625 60 0.5220 70 0.7390 80 1.0290 90 1.4170 100 1.9260 110 2.5890 120 3.4380 130 4.5200 140 5.8800 150 7.5700 160 9.6500 170 12.2000 180 15.2900 190 19.0200 200 23.4700
Weight per Cubic Foot of Mixture
Wpiflht of Vaoor. Total Weight of
Dry Air, Pound
Pound
Mixture, Pound
B.t.u. Absorbed Cubic Feet bt l,Cu. Ft. Saturated Am Warmed 1 Deq.
per Deo. Fahr. per B.t.u.
0.08625 0.08433 0.08247
0.08063 0.07880 0.07694
0.07506 0.07310 0.0709S
0.06881 0.06637 0-06367
0.06062 0.05716 0.05319
0.04864 0.04341 0.03735
0.03035 0.02227 0.01297
0.000069
o.ooom
0.000177
0.000276 0.000409 0.000587
0.000829 0.001152 0.001576
0.002132 0.002848 0.003763
0.004914 Q.006357 0.008140
0.010310 0.012956 0.016140
0.019940 0.024465 0.029780
0.08632 0.08444 0.08265
0.08091 0.07921 0.07753
0.07589 0.07425 0.07253
0.07094 0.06922 0.06743
0.06553 0,06352 0.06133
0.05894 0.05637 0.05349
0.05029 0.04674 0.04275
0.02082 0.02039 0.01998
0.019S5 0.01921 0.01883
0.01852 0.01811 0.01788
0.01763 0.01737 0.01716
0.01696 0.01681 0.01669
0.01663 0.01664 0.01671
0.01682 0.01706 0.01750
48.04 49.05 50.05
51.15 52.06 53.11
54.00 55.22 55.93
56.72 57.57 58.27
58.96 59.50 59.92
60.14 60.10 59.85 `
59:45 58.80 57.15
From Pan Bn^nemnj, published by The-Buffolo Forge Company.
Table 7. Properties of Gases3
Gas
Chemi-
CAL
Symbol
Num-
OF
Atoms
Molecular Weight
Weight in
1 Cu. Ft. at Atmos
pheric
Pressure
Den8ITT Gas Bela- Con-
TtVE BTANT,
TO R
Approx- Exact At 62 At 32 imate Oi=32 deg. fahr. deg. fahr.
Heat
per
Pound
Cp y
Specific Heat per
at
Atmospheric . Pressure
62 Deo. Fahr.
Cp Cy
Cy
ssssfcss
yUlinm. ..... Be Ar
Nitrogen___ Hydrogen .
Nitric oxide.. Carbon
monoxide. Hydro-
chloric
Carbon dioxide___
Nitrous oxide.......
Sulphur dioxide^__
Ammonia
Acetylene__ Methyl
chloride^. Methane--Ethylene__
Ot N. H NO
CO
HC1-
CO,
NsO
80s
NH C*H
CHrCl CH.
1 1
2' 2
2-
2
4.0 40.0 29.0 32.0 28.0 2.0 30.0
4.0 0.0105 39.9 0.1048 28:95 0.0761 '
0.0840 28.08 0.0737
2.016 0.00529 30.04 0.0789
0.0112 0.137 386.0 1.25
0.1112 1.378 38.70 0.124
0.0807
53.34 0.241
0.0892 1.105 48.25 0.217
0.0783 0.970 54.99 0.247
0.00562 0.0696 765.86 3.42
0.0838 1.038 51.40 0.231
0.75 0.0131 0.075 0.0131 0.171 0.0183 0.155 0.0182 0.176 0.0182 2.44 0.0181 0.165 0.0183
0.0079 0.0079
0.0130 0.0130
0.0130
0.0129 0.0130
1.66
1.66 1.40
1.40
1.40 1.40 1.40
2 28.0 28.00 0.0734 0.0780 0.968 55.14 0.243 0.172 0.0180 0.0126 1.41
2 36.5 36.45 0.0958 0.1017 1.260 42.35 0.191 0.136 0.0183 0.0130 1.40
3 44.0 44.00 0.1156 0.1227 1.520 35.09 0.210 0.160 0.0243 0.0185 1.31
3 44.0 44.08 0.1157 0.1229 1.522 35-03 0.221 0.171 0.0256 0.0198 1.26-
3 4
4
64.0 17.0
26.0
64.06 0.1684 0.1786 17.06 0.04483 0.0476 26.02 0.0684 0.0725
2.213 0.590
0.899
24.10 0.154 0.123 0.0260 0.0207 90.50 0.523 0.399 0.0234 0.0178 59.34 0.350 0.270 0.024 0.0185
1.25 1.31 1.28
5 5
6
50.5 16.0 28.0
50.47 0.1326
16.03 0.0421 28.03 0.0738
0.1407
0.0447 0.0780
1.744 30.59 0.24 0.20 0.032 0.554 96.31 0.593 0.450 0.025 0.969 55.08 0.40 0.33 0.029
0.0265 0.019 0.024.
1.20 1.32
1.20
From Marks' Mechanical finpinttr.' Handbook
19
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