The Energy Saving Principle of the Oil-Gas Balance System and Its Economizing Effect

his paper is a supplement to that one entitled "Closed Loading System of the Leight Oil and Its Operation-on-Trial".The energy saving effect of a set of tanks associated with the use of oil-gasbalance system and closed loading system is described.The prin-ceple of saving energy, features in structure and the range of usage for that kind of tanks are referred too.