We use gas tanks in the factory building. Why is it that when the weather is cold, the pressure is gone and can't be used? There is a thin layer of ice on the surface of the fuel tank.

The ambient temperature determines the gasification quantity of liquefied gas. A better way is to melt the ice on the water storage tank with warm water. Heat transfer is worse when there is ice, and then dry the water storage tank. It's not that there is water in it, but there are many long-chain hydrocarbons such as C5, which are not easy to vaporize at low temperature. It may be that the quality of the purchased liquefied gas is not good. The quality that big gas companies buy should be ok, but the price is generally higher. For example, the quality of liquefied gas operated by Shenzhen Gas Company has always been good!