The patented economizer is designed specially for Gas or Oil Fired Steam or Hot Water Boilers. It is installed after flue exhaust, to heat feed water or recycled water with waste heat contained in the flue to reduce exhaust flue temperature and improve heat efficiency as well.
How can finned tubes improve heat efficiency? Groups of fin plates are welded on the tubes as heat transfer mediums. The fin can not only spoiler the smokes more but also increase heat transfer surface, its heat efficiency is 2-3 times that of regular tubes.
