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The hydrogen data resource page lists key constants useful for executing the elementary calculations.
bar | PSIA | Kelvin | °C | kg/m3 | lbm/ft3 | |
---|---|---|---|---|---|---|
Common standard | 1 | 14.5 | 288.15 | 15 | 0.0841 | 0.00525 |
DIN 1343 | 1.01325 | 14.7 | 273.15 | 0 | 0.0899 | 0.00561 |
ISO 2533 | 1.01325 | 14.7 | 288.15 | 15 | 0.0852 | 0.00531 |
Compressed at 200 bar | 200 | 2900.8 | 288.15 | 15 | 14.94 | 0.93269 |
Liquefied | 1.01325 | 14.7 | 20.28 | -252.87 | 70.96 | 4.4296 |
HHV | LHV | Units |
---|---|---|
39.4 | 33.3 | kWh /Kg |
60920 | 51591 | BTU/lb |
141.7 | 120 | MJ/kg |
3.54 | 3 | kWh/Nm3 |
341 | 290 | BTU/ft3 |
12.7 | 10.8 | MJ/Nm3 |
Volumetric heating values are given at 1 bar 0°C