E-Tech Heat Recovery Systems

E-Tech's Economite In-Stack Fuel Economizers

E-Tech's Economite In-Stack Fuel Economizers

In-stack economizers – save fuel with minimal space usage.

E-Tech’s “down-the-stack” Economite makes it possible to save fuel even if you cannot spare the room for a standard economizer unit. This custom-made, in-stack application is easily installed in an existing stack of any diameter. Economites can be fabricated with baffles and shells to direct gas flow through the unit and can be equipped with solid, serrated or longitudinal fins.

The Economite lowers flue gas temperatures by preheating feedwater entering the boiler. The rise in water temperature allows the boiler to produce steam using less fuel, thereby significantly lowering fuel consumption and costs. In general, E-Techers realize a 1% increase in boiler efficiency for each 40°F decrease in flue gas temperature.