Excerpt from Fuel Economy in Boiler Rooms, Vol. 1 of 2: A Development of Fuel Economy and Co2 Recorders Published in the Engineers" Study Course From Power
There is, perhaps, no subject in need of more universal attention among power-plant engineers than that of the economical use of fuel under boilers. Happily the subject is getting such attention more and more as its importance is realized.
The cost of fuel in most plants is between 60 and 70 per cent, of the total cost of power. When it is realized further that due to too much excess air, improper furnace design and, above all, careless and ignorant attendance, as much as twenty-five and more per cent, is needlessly wasted in most plants, the reasons for such activity as is now displayed are manifest.
It may be correctly stated that the average power-plant engineer has had but few persons or papers to point out to him, in his own language, the causes of waste in the boiler room. Combustion to him, until recently, meant maintaining a fire hot enough to keep the steam gage indicating the correct pressure. The chemistry of the process and of the means for detecting the degree of perfection of combustion were matters for others to consider - others who were fortunate enough to possess the education to understand the terms and technical "mysteries" dealt with.
When preparing the lessons on combustion which first appeared in the Engineer"s Study Course from Power and which make up the largest part of this book, the aim was to present the subjects treated of in a manner easily understandable to the engineers and firemen who have to do with the final use of the fuel and on whom depend how economically it will be used.
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