| Table 4 |
Sample Propane-Air Data |
|
| Figure 2 |
Propane-Air Dew Points |
|
Btu per
Cubic Foot
of PA Mixture
|
%
Propane
by
Volume
|
%
Air
by
Volume
|
%
O2
by
Volume
|
Specific
Gravity
of PA
Mixture
|
Wobbe
Number
(1)
|
Dew points based on 55%/45%
propane-air mix and natural gas containing 95% methane.
Source:
Ruffcorn, S. D., Hoch, J. P. (1994). Energy Gases Data
Extensions, Standby Systems, Inc.
|
|
1600
|
63.49
|
36.51
|
7.630
|
1.330
|
1387
|
|
1590
|
63.10
|
36.90
|
7.713
|
1.328
|
1380
|
|
1580
|
62.70
|
37.30
|
7.796
|
1.326
|
1372
|
|
1570
|
62.30
|
37.70
|
7.879
|
1.324
|
1364
|
|
1560
|
61.90
|
38.10
|
7.962
|
1.322
|
1357
|
| |
|
|
|
|
|
|
1550
|
61.51
|
38.49
|
8.045
|
1.320
|
1349
|
|
1540
|
61.11
|
38.89
|
8.128
|
1.318
|
1342
|
|
1530
|
60.71
|
39.29
|
8.211
|
1.316
|
1334
|
|
1520
|
60.32
|
39.68
|
8.294
|
1.31
|
1326
|
|
1510
|
59.92
|
40.08
|
8.377
|
1.312
|
1318
|
| |
|
|
|
|
|
|
1500
|
59.52
|
40.48
|
8.460
|
1.310
|
1311
|
|
1490
|
59.13
|
40.87
|
8.542
|
1.307
|
1303
|
|
1480
|
58.73
|
41.27
|
8.625
|
1.305
|
1295
|
|
1470
|
58.33
|
41.67
|
8.708
|
1.303
|
1288
|
|
1460
|
57.94
|
42.06
|
8.791
|
1.301
|
1280
|
| |
|
|
|
|
|
|
1450
|
57.54
|
42.46
|
8.874
|
1.299
|
1272
|
|
1440
|
57.14
|
42.86
|
8.957
|
1.297
|
1264
|
|
1430
|
56.75
|
43.25
|
9.040
|
1.295
|
1257
|
|
1420
|
56.35
|
43.65
|
9.123
|
1.293
|
1249
|
|
1410
|
55.95
|
44.05
|
9.206
|
1.291
|
1241
|
| |
|
|
|
|
|
|
1400
|
55.56
|
44.44
|
9.289
|
1.289
|
1233
|
|
1390
|
55.16
|
44.84
|
9.372
|
1.287
|
1225
|
|
1380
|
54.76
|
45.24
|
9.455
|
1.285
|
1217
|
|
1370
|
54.37
|
45.63
|
9.538
|
1.283
|
1210
|
|
1360
|
53.97
|
46.03
|
9.621
|
1.281
|
1202
|
| |
|
|
|
|
|
|
1350
|
53.57
|
46.43
|
9.704
|
1.279
|
1194 |
|
Specific
gravity values based on propane vapor at 2520 Btu/cf and specific
gravity of 1.52 at standard conditions.
Source:
Ruffcorn, S. D., Hoch, J. P. (1994-2004). Energy Gases
Data Extensions, Standby Systems, Inc.
|
(1)
Wobbe Number is the High
Heating Value of the gas (expressed in units 'BTU per SCF' above)
divided by the square root of the Specific Gravity of the gas
(where the SG of Air = 1.0).
|
|
|
1340
|
53.17
|
46.83
|
9.787
|
1.277
|
1186
|
|
1330
|
52.78
|
47.22
|
9.869
|
1.274
|
1178
|
|
1320
|
52.38
|
47.62
|
9.952
|
1.272
|
1170
|
|
1310
|
51.98
|
48.02
|
10.035
|
1.270
|
1162
|
| |
|
|
|
|
|
|
1300
|
51.59
|
48.41
|
10.118
|
1.258
|
1115
|
|
|
