46
test the engine was operated at 675 R.P.M., the friction HP determined in Prof. Benjamin's test was approximately 2,
which, however, included that of an extra countershaft, which was not required in my test.
63
Prof. Benjamin's tests show a consumption of water per brake horsepower pear hour varying from 12.6 to
19.9 and per indicated horsepower per hour an amount varying from 10.8 to 14 lb.
SUMMARY
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Respecting these results Prof. Benjamin states: "This is a remarkable showing for an engine of this size.
When the fact is considered that ordinary simple engines use from 25 to 35 lb. per indicated H. P. per hour, and that
12 lb. is considered good performance for triple expansion condensing engines the remarkable nature of this
performance is better understood."
