Use Feedwater Economizers for Waste Heat … – Energy.gov
A feedwater economizer reduces steam boiler fuel requirements by transferring heat from the flue gas to incoming feedwater. Boiler flue gases are often rejected …
Heat exchangers / economizers | Danstoker
Economizer. (HOT WATER BOILERS). Fuel type (gas, oil or dual fuel); Temperatures, inlet (exhaust gas and water); Desired temperature, outlet …