Abstract
Many researches and investigations have been reported on the combustibility of coal for industrial uses, while very few are carried out on house-coal to be used for home heating or for bath heating.This paper describes the combustibility of coal as house-coal, as per which following conclusions are given:
(1)Combustibility varies greatly with kinds of coal.
(2)Ignitability and burning time are little different with kinds of coal.
(3)There is a great difference in the amounts of soot and refuse.
(4)Heat release is affected severely by the reactivity of coal.
