LNG (liquefied natural gas) refers to natural gas transformed into a liquid state.
To pass from a gaseous state (its initial state at the time of extraction) to a liquid state, the gas must be cooled down to a temperature of between – 161°C and -163°C.

Liquefaction plants located in countries where fossil fuels are present liquefy the gas (Algeria for example).
Once in this liquid state, liquefied natural gas (LNG) is 600 times smaller in volume than in its gaseous state and can therefore be transported by ship and sent to gas-consuming countries .

Usage :

LNG is used to supply the natural gas network for households, in particular to fuel gas boilers used for hot water and heating. 

LNG is also increasingly being used as a fuel for ships dedicated to sea transport and cruise liners. As a result these giants of the sea can navigate waters whilst considerably limiting their emissions of polluting gas. 

Vehicles running on LNG exist too. This mainly concerns road transport such as trucks and buses.

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