CNG: Compressed Natural Gas
(sometimes also known as or Natural Gas Vehicle, NGV)
CNG is methane gas that is compressed into cylinders for transportation and is maintained in gaseous form.
The pressure at which it is maintained can range from 250 to 300 Bars.
Due to the extreme high pressure, cylinders used have to be certified and inspected regularly.
Generally, as a rule of thumb, CNG thermal energy per cubic ft is 1/4 of a typical Gasoline thermal volume.
In other words, we need 4 times the volume or space to store the same energy capacity of CNG in compressed form.
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