Natural gas (NG) industry is unique in terms of its unit of measurement. Different sources use different unit that may confuse the readers who need to convert to the other units they use. SiBernas gathered nice articles on the net with regard to this issue and summarized into this article.
BTU (British Thermal Unit). It's non-standard unit of energy (SI uses Joule instead) and usually used in the US and European. One (1) BTU means amount of energy to raise one (1) pound of water by one degree Fahrenheit.
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| Natural Gas and Its Utilization |
1 BTU = 1055 Joule
1 MMBTU = 1 X 10^6 BTU. It is commonly unit used for bought and sold NG.
1 MMBTU = 1 X 10^6 BTU. It is commonly unit used for bought and sold NG.
SCF ( Standard Cubic Feet/Ft^3). It represents volume of NG at standard pressure and temperature.
1 SCF = 1020 BTUs
1 MSCF = 1X10^3 SCF = 1.02 MMBTUs(it's often said 1 MSCF ~ 1 MMBTU)
1 MSCF = 1X10^3 SCF = 1.02 MMBTUs(it's often said 1 MSCF ~ 1 MMBTU)
BSCF/TSCF (Billion SCF/ Trillion SCF)
As we may know, NG can substitute gasoline in transportation sector. Therefore it's good to know the head to head between the two.
GGE (Gallon of Gasoline Equivalent) . This is typical unit of CNG sold in public fueling stations.
1 GGE =114000 BTUs, but1 GGE = 126.67 SCF (lower heating value/net calorific value).
Note: 1 SCF only yields 900 BTUs of usable gasoline equivalent energy.
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