p. 1,980,000
----------
Loss per h.p. 34,547,952
Per cent utilized per h.p. 5.42
Per cent lost per h.p. 94.58
------
100.00
From these facts it may be assumed that after making due allowance for
variable qualities of the coal, the steam engine process, as at
present practiced, will not utilize more than from 5 to 10 per cent.
of the energy contained in the fuel used. It will thus be seen that
the process of converting static to dynamic caloric by luminous
combustion, by means of the steam engine, is an exceedingly wasteful
and costly method, and leaves much room for economy.
Taking an ordinary grade of petroleum as consisting of 13 per cent.
hydrogen, 78 carbon, 6 oxygen, 3 nitrogen and ash, we have as its
energy in foot pounds per pound of oil--
62,391 x 13 }
----------- = 8,110 H. }
100 }
} 19,454 units.
14,544 x 78 }
----------- = 11,344 C. }
100 }
19,454 x 772 = 15,018,488 foot pounds. Thus, while our best coal
contains twelve million, the petroleum contains fifteen million foot
pounds of occluded energy in each pound, which is equal to 118,000,000
foot pounds, or 60 horse power for one hour, from one gallon of such
oil.
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