Abstract
This paper gives the principal operating data of six large steam generating units fired with pulverized coal, and installed in four plants. Two of these units are the remodeled boilers of the Fordson Power Plant of the Ford Motor Company, Fordson, Michigan; the third unit is one of the first five pulverized-coal-fired boilers of the Colfax Plant of the Duquesne Light Company near Pittsburgh; the fourth unit is one of the two boilers of the Stanwix Plant of the Allegheny County Steam Heating Company in Pittsburgh; and the fifth and sixth units are the two units of the Gould Street Station of the Consolidated Gas Electric Light and Power Company of Baltimore. All these plants use the storage system of burning pulverized coal, and the units are fairly representative of the large steam generating units now rapidly coming into use.
The operating data are presented graphically and consist of the hourly output in pounds of steam throughout the period of operation. Whenever the steam generating unit was shut down the reason for this shut down is given. There are also presented charts giving the necessary data for the computation of the efficiency for various percentages of rating such as the temperature of flue gases, the percentage of CO2 in the flue gases, and the losses due to incomplete combustion.
