Steam, Its Generation and Use

by Babcock & Wilcox Company

[Table 34] gives the densities of various gases together with other data that will be of service in gas analysis work.

[TABLE 34] DENSITY OF GASES AT 32 DEGREES FAHRENHEIT AND ATMOSPHERIC PRESSURE ADAPTED FROM SMITHSONIAN TABLES Gas Chemical Symbol Specific Gravity Air=1 Weight of One Cubic Foot Pounds Volume of One Pound Cubic Feet Relative Density, Hydrogen = 1 Exact Approximate Oxygen O 1.053 .08922 11.208 15.87 16 Nitrogen N 0.9673 .07829 12.773 13.92 14 Hydrogen H 0.0696 .005621 177.90 1.00 1 Carbon Dioxide CO 2 1.5291 .12269 8.151 21.83 22 Carbon Monoxide CO 0.9672 .07807 12.809 13.89 14 Methane CH 4 0.5576 .04470 22.371 7.95 8 Ethane C 2 H 6 1.075 .08379 11.935 14.91 15 Acetylene C 2 H 2 0.920 .07254 13.785 12.91 13 Sulphur Dioxide SO 2 2.2639 .17862 5.598 31.96 32 Air … 1.0000 .08071 12.390 … … [Pg 164]

1942 Horse-power Installation of Babcock & Wilcox Boilers and Superheaters in the Singer Building, New York City

FOOTNOTES

[ [28] ] See [Table 31] , page [151] .

[ [29] ] This formula is equivalent to ( [10] ) given in [chapter on combustion] . 34.56 = theoretical air required for combustion of one pound of H (see [Table 31] ).

[ [30] ] For degree of accuracy of this formula, see Transactions, A. S. M. E., Volume XXI, 1900, page 94.

[ [31] ] For loss per pound of coal multiply by per cent of carbon in coal by ultimate analysis.