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Home > Liquefied Natural Gas > Compressed Natural Gas

Compressed Natural Gas (CNG)


Like LNG (Liquified Natural Gas), CNG (Compressed Natural Gas) is methane (CH4).
Its use entails the same environmental advantages:

  • 15 to 75% reduction in CO2,
  • 70% reduction in NOx,
  • absence of particulates.

Since the mid-1980s, CNG has been produced by compressing to 250 bars the natural gas from the supply grid network.
A CNG distribution station comprises compressors, a buffer stock of variable size, and distributors.

Fill-up is accomplished either:

  • by adjusting the compressors and buffer stock to refuel CNG vehicles during the day,
  • by refueling them at night (slow loading).

A vehicular fuel —natural gas for vehicles (NGV)— since its origin, CNG applies to vehicles traveling small distances (250 to 300 km) and thus to be dedicated to fleets of local agencies (buses, dump trucks for household waste) or short-haul shippers.

With the 2014 French regulation approving LNG vehicles, truck operators can now use either type of natural gas.

AXEGAZ thus offers two sorts of gas stations:

  • 1. The public LNG/CNG gas station: independent, since it can be located in an area not served by the grid; it distributes LNG and also CNG produced from LNG.

  • 2. The CNG gas station: located on the grid, refills CNG-powered vehicles.

AXÈGAZ carries out a preliminary study and designs, installs, and maintains the gas station.





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