Calor gas freezes in the winter. Is this true?
Both gases (Butane and Propane) are stored as a liquid under a slight pressure. The liquefied gas turns back into a vapour very easily and fills the space above the liquid within the cylinder. As the vapour is drawn off, the pressure drops slightly. The liquefied gas boils to maintain the pressure in the cylinder. The rate at which the liquefied Butane boils and produces vapour falls with temperature until –10oC, when it stops. As it’s the vapour we need to burn, as it gets colder the kettle takes longer to boil. Propane keeps producing vapour down to –42oC. It is not correct to say that Calor Gas freezes, as the temperature falls it does not boil as quickly. The heat to make the liquefied gas boil comes through the cylinder wall from the outside air, so wrapping the cylinder up will not help; it will only insolate the cylinder and stop the heat getting in.
