Important Terms from A to Z

L

LPG (Liquefied Petroleum Gas)

The acronym LPG stands for liquefied petroleum gas and in common parlance describes gases that remain liquid at room temperature under relatively low pressure, such as propane, butane and their mixtures.

In the extraction of natural gas and crude oil production LPG occurs as "wet natural gas during drilling” and is burned on the spot because processing this raw material from such sources is uneconomical. But LPG does not just occur during exploration; it is also a byproduct of oil refining.

As a fossil fuel, LPG (liquefied petroleum gas) is often used for heating or cooking purposes. But it can also be used as a fuel for vehicles with gasoline engines that have an LPG system. The first German gas filling station went into operation in Hannover in 1935. In the 1970s, the use of LPG as a fuel for automobiles was widespread in Italy and the Netherlands, in particular.

The quality requirements for LPG are regulated throughout Europe by DIN EN 589. When used as a fuel, LPG is subject to a lower tax rate due to its lower emissions value. The emissions of this gas are lower than those of gasoline and its exhaust gases can be converted by automotive catalysts even at low temperatures. Moreover, as it is virtually free of sulfur, the combustion produces no soot. Therefore, vehicles that run on LPG or natural gas are the only vehicles with combustion engines that can be used inside buildings. In addition, LPG can be used as a propellant in spray cans and can be found as a non-CFC refrigerant in refrigerators and air conditioners.

Status: December 2015
All information subject to change. Errors and omissions excepted.

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