The process is a highly energy efficient method of heating or evaporating large quantities of liquids, often dirty or corrosive, by forcing the products of combustion directly through the liquid. The heat transfer occurs between the high temperature (>2,500 deg F) gas bubbles as they collapse while traveling through the solution, so there are no heat transfer surfaces to foul. When the gases are finally allowed to exhaust they exit at the same temperature as the heated solution, and at atmospheric pressure. With conventional methods, the heat exchange is indirect and the products of combustion are wastefully exhausted directly into the atmosphere at considerable temperatures.
Submerged combustion is used to heat or evaporate liquids and slurries, with efficiencies up to 99%. Other typical industrial liquid heating systems reach only 80% efficiency. Submerged combustion systems operate with low pressure, and are inherently safe. Fully automatic, they are very well suited for use in remote locations without an operator attending.