Regasification is a process of converting liquefied natural gas (LNG) at −162 °C (−260 °F) temperature back to natural gas at atmospheric temperature. LNG gasification plants can be located on land as well as floating barges. Floating barge mounted plants have advantage of toeing to new offshore locations for better usage in changing business environment. In a conventional regasification plant, LNG is heated by the sea water to convert in to natural gas / methane gas.

For the transportation, the gas extracted in the countries that have natural reservoirs is cooled until it reaches a temperature of -162°C with the aim to convert it into a liquid form; this decreases its volume more than 600 fold. This way one ship alone can contain large quantities of gas making transportation economically viable. One “LNG carrier” can transport about 130,000 cubic metres of LNG – Liquefied Natural Gas – equivalent to about 80 million cubic metres of the product in gaseous form.

The LNG reaches the consumer countries by sea where, via special plants, it is brought back to the gaseous state – that is “regasified” – to be introduced into the normal distribution networks. The regasification process is obtained by introducing the gas into a “heat exchanger” where a warmer liquid flows, normally seawater, the natural temperature of which is sufficient to heat the LNG and bring it back to the gaseous state.

 

Transportation by sea is an advantageous alternative allowing gas to be bought freely throughout the world
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