On the Characteristic Surface of a Steam Boiler : 3rd Report, The Economical Thickness of Coal Layer

Abstract

We can easily imagine that we cannot operate a steam boiler with extremely thick or thine coal layer on chain grate stoker. Even though we operate the boiler with the same fuel consumption and the same quantity of air required for combustion, boiler efficiency is not same. That is, the characteristic surface of the boiler is affected by the thickness of coal layer. In this paper, we analyse a problem of coal layer and point out the economical thickness of coal layer judging from the results of our boiler test.