What is LPG and how does it work?
Liquefied Petroleum Gas (or LPG) is commonly used in caravanning for cooking, heating, and where no other power source is available, running the fridge. Petroleum gas is created as part of the process of refining crude oil – it is collected and compressed into a liquid before being bottled. The LPG will remain in its liquid form for as long as it is held under sufficient pressure. If that pressure is lowered (i.e. some gas is drawn off) an amount of the liquid will boil into gas until the pressure is restored. In some applications, the LPG is drawn from the bottle and used in its liquid state, however for most (including caravan gas appliances) it is allowed to boil and then used in its gaseous state.
