Economize firewood stove of segment gasify.

Firewood stove based on steam secondary air technology was introduced in this paper. A research on stove which have used this technology has been carried out,The technology can im- prove the thermal efficiency form 10% to 50%.It can help us save a lot of firewood.Developing this kind of stove in rural area can gain remarkable economy benefical,especially in the mountainous areas,it can gain vital society benefit.