In order to liquefy natural gas, it needs to be cooled to –260° F (–162° C). Once cooled and converted into a liquid, the natural gas becomes 1/600th of its original volume, allowing it to be used as a transportation fuel or shipped safely aboard in specially designed LNG vessels. When re-gasified, LNG becomes identical to the natural gas that is delivered to our homes here in the United States which is then transported via pipeline to end users.
Compressed Natural Gas, or CNG, is also a form of natural gas commonly used in the transportation sector. The gas is held in high-pressure tanks – 20 to 25 MPa (200 to 250 bar, or 3,000 to 3,600 psi) and is often used as a transportation fuel.
