CHARACTERISTICS OF 8 FIREWOOD SPECIES OF BOTSWANA

被引:24
作者
TIETEMA, T
DITLHOGO, M
TIBONE, C
MATHALAZA, N
机构
[1] National Institute of Development Research and Documentation (NIR), University of Botswana, Gaborone
关键词
FIREWOOD; OPEN FIRES; BURNING EFFICIENCIES; BOTSWANA; INDIGENOUS FIREWOOD SPP; ENERGY CONTENT; SPECIFIC WEIGHT; MOISTURE CONTENT; CHEMICAL COMPOSITION;
D O I
10.1016/0961-9534(91)90050-M
中图分类号
S2 [农业工程];
学科分类号
0828 ;
摘要
Eight firewood species of Botswana were compared as regards various aspects of their burning, physical and chemical characteristics. The wood species varied from highly preferred species to species that, though used, were not preferred at all. Burning properties were studied in water boiling experiments. Preferred firewood species heated the water up slowly and after the water stopped boiling, the remaining ashes caused the water to cool down slowly. Non-preferred firewood species burned out fast and had fast heating up and cooling down rates of the water. Irrespective of these differences and a wide range of specific weights (0.64 to 1.17 g.cm-3), the energy transfer efficiency for all species was low (approx. 2%) and within a close range of each other. The moisture content in the air dried wood was low, with an average of 7.2%.
引用
收藏
页码:41 / 46
页数:6
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