Liquefaction is the process of converting a gas into a liquid. This can be achieved by cooling the gas to its boiling point, which is the temperature at which it changes from a gas to a liquid. The boiling point of a gas is determined by its pressure and temperature. When the pressure is increased, the boiling point of a gas increases. Conversely, when the temperature is increased, the boiling point of a gas decreases.
Liquefaction is an important process in many industries. For example, it is used to produce liquefied natural gas (LNG), which is a fuel that is used to power vehicles and heat homes. LNG is produced by cooling natural gas to -162C (-260F), which converts it into a liquid. This liquid is then transported in tankers to power plants and other facilities.