On the Characteristic Surface of a Steam Boiler : 4th Report, Effect of Heating Value of Fuels

Abstract

In recent year, it has become an important problem that we shall have to use the coal of lower heating value in our boiler. But, we cannot find sufficient reports of this problem. So we have to have certain experiments burning good and bad coals one after another in the same boiler, and make comparative study of two characteristic surfaces. Our boiler test has revealed that the characteristic surface of a boiler is considerably affected by the heating value of coal. In this paper, we study this problem from two standpoints, the quality of coal and the construction of furnace.