Aalborg DFM Digital - Manual (Page 57)

53
APPENDIX II INTERNAL "K" FACTORS
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CAUTION: K-Factors at best are only an approximation. K factors should not
be used in applications that require accuracy better than +/- 5 to 10%.
INDEX ACTUAL GAS
K Factor
Relative
to N
2
Cp
[Cal/g]
DENSITY
[g/I]
0 Air 1.0000 .240 1.293
1 Argon Ar 1.4573 .1244 1.782
2 Acetylene C2H2 .5829 .4036 1.162
3 Ammonia NH
3
.7310 .492 .760
4 Butane C
4
H
10
.2631 .4007 2.593
5 Chlorine Cl
2
.86 .114 3.163
6 Carbon Monoxide C
O
1.00 .2488 1.250
7 Carbon Dioxide CO
2
.7382 .2016 1.964
8 Chloroform CHCl
3
.3912 .1309 5.326
9 Ethane C
2
H
6
.50 .420 1.342
10 Ethylene C
2
H
4
.60 .365 1.251
11 Freon-134A CF
3
CH
2
F .5096 .127 4.224
12 Fluorine F
2
.9784 .1873 1.695
13 Fluoroform (Freon-23) CHF
3
.4967 .176 3.127
14 Helium He 1.454 1.241 .1786
15 Hydrogen H
2
1.0106 3.419 .0899
16 Hydrogen Chloride HCl 1.000 .1912 1.627
17 Hydrogen Sulfide H
2
S .80 .2397 1.520
18 Hexane C
6
H
14
.1792 .3968 3.845
19 Methane CH
4
.7175 .5328 .715
20 Neon NE 1.46 .246 .900
21 Nitrous Oxide N
2
O .7128 .2088 1.964
22 Nitrogen Dioxide NO
2
.737 .1933 2.052
23 Nitric Oxide NO .990 .2328 1.339
24 Nitrogen Trifluoride NF
3
.4802 .1797 3.168
25 Oxygen O
2
.9926 .2193 1.427
26 Ozone .446 .195 2.144
27 Propane C
3
H
8
.35 .399 1.967
28 Propylene C
3
H
6
.40 .366 1.877
29 Sulfur Dioxide SO
2
.69 .1488 2.858
30 Sulfur Hexafluoride SF
6
.2635 .1592 6.516
31 Xenon Xe 1.44 .0378 5.858