Wood used as fuel. There are various types of firewood, such as hardwood (oak, chestnut, and other oak), miscellaneous firewood (hardwood other than hardwood), pine firewood (Japanese red pine, black pine, and other cedar firewood) (softwood other than pine), and sawdust. The calorific value of dry wood is an average of 4500 cal/g, and softwood is generally greater. In Japan, demand has dropped sharply with the spread of liquid fuels. Source : Heibonsha Encyclopedia About MyPedia Information |
燃料とする木材。薪には堅薪(クヌギ,ナラ,カシなどの材),雑薪(堅薪以外の広葉樹材),松薪(アカマツ,クロマツなどの材),杉薪(松薪以外の針葉樹材),ばた薪(製材くず)などの種類がある。発熱量は乾材で平均4500cal/gで,一般に針葉樹材のほうが大きい。日本では流体燃料の普及につれ,需要が激減。
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