Twentieth century hand-book for steam engineers and electricians with questions and answers; a practical non-technical treatise .. (1913)
Swingle, Calvin Franklin, 1846- [from old catalog] · Chicago, F. J. Drake & company · leaf 515
Fig. 185 boiler pressure was 60 pounds, and the scale of spring 40.Fig. 187, taken after the necessary adjustments had beenmade, shows much better valve performance. The horsepower developed was 251 and the steam consumption was20.5 pounds per I. H. P. per hour. The rather high rate … Fig. 186 of steam consumption for this engine as compared withengine No. 1, which was the same size but consumed only18 pounds of steam per I. H. P. per hour, was due to twocauses. First, a low vacuum; second, low initial pressurenecessitating a late cut oS. Diagram Analysis 503 Pigs. -188 to 191…
