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在我国农村生活的消费燃料构成中,木柴占有很大比重。据1979年全国统计,直接作燃料的木柴大约为18,168万吨,平均热效率低,约8-12%。其主要原因是柴灶的结构不合理。旧式柴灶,无炉篦,大灶门,大炉膛,保温性能差,无烟囱,所以木柴在灶内燃烧不完全,热效率低。还有卫生条件也不好,操作不方便,在当前旧式柴灶已不适宜于农业生产发展和人民生活日益提高的需要。近几年在一些地区涌现了一批省柴灶,如湖南省岳阳地区的岳-Ⅱ型柴草灶,热效率在30%以上。这些新式省柴灶炉膛底部有炉篦,上部采用了马蹄形回风,并加了烟囱,灶门改小了,有的还加了炉门,从而改善了灶膛的通风供
In the composition of consumption fuel in rural life in our country, firewood occupies a large proportion. According to the 1979 national statistics, the amount of direct fuelwood consumed was about 181,680,000 tons, with an average low thermal efficiency of about 8-12%. The main reason is the structure of firewood unreasonable. Old stoves, no grate, large stove doors, large hearth, poor insulation properties, no chimney, so the combustion of firewood in the stove is not complete, low thermal efficiency. There are also poor sanitation conditions and inconvenient operation. At the present time, old-style firewood stoves are no longer suitable for the needs of agricultural production and people’s daily life. In recent years, a number of firewood stoves have emerged in some areas, such as the Yue-Ⅱ firewood stove in Yueyang, Hunan Province. The thermal efficiency is above 30%. These new stove stove stove at the bottom of the grate, the upper part of the horseshoe-shaped return air, and added a chimney, stove door smaller, and some also added a furnace door, thereby improving the ventilation of the hearth