The economizer - the device warmed by products of combustion of fuel and intended for heating of the feedwater coming to the steam generator.
Economizers are used as the tail surfaces of heating of stationary steam generators with working pressure up to 24 bars. Economizers consist of packages of the pipes of fins connected among themselves and concluded in a framework with a heat-insulating covering. The covering of the economizer is made of stainless steel. The design provides existence of a damper of control of a dew point, the perepuskny valve, locking valves.
Use of the economizer provides decrease in fuel consumption by 5-7% - depending on temperature of the departing combustion gases.