Refill every four hours

High efficiency at low firing intensity is important for the environmentally friendly use of stoves in low-energy houses.SINTEF is collaborating with the Norwegian stove manufacturer Dovre on a project concerning wood-burning stoves for low loads and extended burning times. The aim is to construct a stove that will only need to be refuelled every four hours. In the 1990s, new wood-firing technology raised the efficiency of traditional wood-burning stoves from 40 to 80 per cent, while reducing particle emissions by more than 75 per cent. Since then, new regulations regarding insulation thickness and heat loss in houses have reduced the amount of heat that wood-burning stoves need to produce.