三菱式汽罐燃焼効率計算器の理論及應用

概要

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A new calculator was deviced, which admit of rapid calculation of the air-ratio n, the rate of producing soot S and the percentage heat-loss ψ, due to incomplete combustion and excess air, from the results of Orsat's gas analysis, i. e. volume percentage of carbon di-oxide, mono-oxide and oxygen in the exhaust gas, say p, r and q. The rate of producing carbon mono-oxide is converted into equivalent soot with respect to heat efficiency and it is included in the rate of producing soot S. Thus it can be immediately determined what an amount of air ratio is most economical for particular boiler and particu1ar rate of fuel consumption, and also we can decide the quality of the combustion system by the amount of minimum heat loss. The ground of the theory is very simple. If we assume, as it is very probable in most cases, that all the constituents of the fuel make complete combustion, except some parts of the carbon, say Cy and Cz, which produce carbon mono-oxide and soot respectively, then the compositions of the exhaust gas, p, q and r, must be certain functions of the three variables Cy, Cz and n. Consequently we can solve Cy, Cz and n as the functions of p, q and r, provided that the chemical composition of the fuel is known. Finally some examples of application are shown.
社団法人日本船舶海洋工学会の論文
1929-04-05