This appendix is used to convert from liquid to gas for cryogenic fluids.
Table G101.2 shall be used to determine the equivalent amounts of cryogenic fluids in either the liquid or gas phase.
To use Table G101.2, read horizontally across the line of interest. For example, to determine the number of cubic feet of gas contained in 1.0 gallon (3.785 L) of liquid argon, find 1.000 in the column entitled "Volume of Liquid at Normal Boiling Point." Reading across the line under the column entitled "Volume of Gas at 70°F and 1 atmosphere 14.7 psia," the value of 112.45 cubic feet (3.184 m 3 ) is found.
If other quantities are of interest, the numbers obtained can be multiplied or divided to obtain the quantity of interest. For example, to determine the number of cubic feet of argon gas contained in a volume of 1,000 gallons (3785 L) of liquid argon at its normal boiling point, multiply 112.45 by 1,000 to obtain 112,450 cubic feet (3184 m 3 ).
TABLE G101.2 WEIGHT AND VOLUME EQUIVALENTS FOR COMMON CRYOGENIC FLUIDS
TABLE G101.2 WEIGHT AND VOLUME EQUIVALENTS FOR COMMON CRYOGENIC FLUIDS
| CRYOGENIC FLUID | WEIGHT OF LIQUID OR GAS | VOLUME OF LIQUID AT NORMAL BOILING POINT | VOLUME OF GAS AT NTP | |||
| Pounds | Kilograms | Liters | Gallons | Cubic feet | Cubic meters | |
| Argon | 1.000 | 0.454 | 0.326 | 0.086 | 9.67 | 0.274 |
| 2.205 | 1.000 | 0.718 | 0.190 | 21.32 | 0.604 | |
| 3.072 | 1.393 | 1.000 | 0.264 | 29.71 | 0.841 | |
| 11.628 | 5.274 | 3.785 | 1.000 | 112.45 | 3.184 | |
| 10.340 | 4.690 | 3.366 | 0.889 | 100.00 | 2.832 | |
| 3.652 | 1.656 | 1.189 | 0.314 | 35.31 | 1.000 | |
| Helium | 1.000 | 0.454 | 3.631 | 0.959 | 96.72 | 2.739 |
| 2.205 | 1.000 | 8.006 | 2.115 | 213.23 | 6.038 | |
| 0.275 | 0.125 | 1.000 | 0.264 | 26.63 | 0.754 | |
| 1.042 | 0.473 | 3.785 | 1.000 | 100.82 | 2.855 | |
| 1.034 | 0.469 | 3.754 | 0.992 | 100.00 | 2.832 | |
| 0.365 | 0.166 | 1.326 | 0.350 | 35.31 | 1.000 | |
| Hydrogen | 1.000 | 0.454 | 6.409 | 1.693 | 191.96 | 5.436 |
| 2.205 | 1.000 | 14.130 | 3.733 | 423.20 | 11.984 | |
| 0.156 | 0.071 | 1.000 | 0.264 | 29.95 | 0.848 | |
| 0.591 | 0.268 | 3.785 | 1.000 | 113.37 | 3.210 | |
| 0.521 | 0.236 | 3.339 | 0.882 | 100.00 | 2.832 | |
| 0.184 | 0.083 | 1.179 | 0.311 | 35.31 | 1.000 | |
| Oxygen | 1.000 | 0.454 | 0.397 | 0.105 | 12.00 | 0.342 |
| 2.205 | 1.000 | 0.876 | 0.231 | 26.62 | 0.754 | |
| 2.517 | 1.142 | 1.000 | 0.264 | 30.39 | 0.861 | |
| 9.527 | 4.321 | 3.785 | 1.000 | 115.05 | 3.250 | |
| 8.281 | 3.756 | 3.290 | 0.869 | 100.00 | 2.832 | |
| 2.924 | 1.327 | 1.162 | 0.307 | 35.31 | 1.000 | |
| Nitrogen | 1.000 | 0.454 | 0.561 | 0.148 | 13.80 | 0.391 |
| 2.205 | 1.000 | 1.237 | 0.327 | 30.43 | 0.862 | |
| 1.782 | 0.808 | 1.000 | 0.264 | 24.60 | 0.697 | |
| 6.746 | 3.060 | 3.785 | 1.000 | 93.11 | 2.637 | |
| 7.245 | 3.286 | 4.065 | 1.074 | 100.00 | 2.832 | |
| 2.558 | 1.160 | 1.436 | 0.379 | 35.31 | 1.000 | |
| LNGa | 1.000 | 0.454 | 1.052 | 0.278 | 22.968 | 0.650 |
| 2.205 | 1.000 | 2.320 | 0.613 | 50.646 | 1.434 | |
| 0.951 | 0.431 | 1.000 | 0.264 | 21.812 | 0.618 | |
| 3.600 | 1.633 | 3.785 | 1.000 | 82.62 | 2.340 | |
| 4.356 | 1.976 | 4.580 | 1.210 | 100.00 | 2.832 | |
| 11.501 | 5.217 | 1.616 | 0.427 | 35.31 | 1.000 | |
| For SI: 1 pound = 0.454 kg, 1 gallon = 3.785 L, 1 cubic foot = 0.02832 m3, °C = [(°F)-32]/1.8, 1 pound per square inch atmosphere = 6.895 kPa. a. The values listed for liquefied natural gas (LNG) are "typical" values. LNG is a mixture of hydrocarbon gases, and no two LNG streams have exactly the same composition. |