BOILER TESTS Results of three tests on a 175 H.P. Heine water tube boiler, using Oklahoma Crude Oil of 19,58o B.T.U.'s per lb. and oil fuel of 19,33o B.T.U.'s per lb.
While the results are slightly in favor of the crude oil, the fact that it flashes below F. makes its use quite dangerous in transportation, storage and in the furnace. Texaco Oil Fuel is perfectly safe as it does not flash at low temperature. It is to be preferred as a fuel.
A recent comparative test between coal and oil fuel on an Aultman & Taylor 302 H.P. water tube boiler at the plant of the El Paso Smelting Works, El Paso, Texas : From an evaporative standpoint, these tests would indicate that 3.2 bbls. of the oil used in these tests are equivalent to i ton of San Antonio coal and that 3.1 bbls. of oil are equivalent to one ton of Dawson coal.
Results of three comparative tests between coal and oil at the Turkey Creek plant of the Kansas City Water Department.
When firing coal, the four 35o h. p. and the two 30o h. p. B. & W. boilers were equipped with stokers.
Practically the same conditions existed during all of the tests.
Partial results of a series of tests made by Prof. E. W. Kerr, M. E. and H. A. Nadler, B. S., upon a hori zontal return tubular boiler, size of boiler i8 ft. long
by 72 in. in diameter, containing 8o 4-in. tubes.
A few results frequently obtained with oil as a fuel when used in actual practice: 14 lbs. to 16 lbs. of water evaporated into steam from and at 212° F. per lb. of oil.
Assuming 15 lbs. (which is about the average of the foregoing tests), one horse power hour will be developed with 2.3 lbs. of oil.
One 42 gal. bbl. of fuel oil weighing 314 lbs. and containing 6,025,974 B.T.U., would theoretically evaporate 6,209 lbs. of water from and at 212° F., or the equivalent of 180 boiler horse power hours.
One 42 gal. bbl. of such oil will develop about 137 boiler h.p. hours.
15 lbs. of water evaporated into steam from and at 2 1 F. per i lb. of oil represents an absorption of 15 x 970.4 = 14,556 B.T.U. from a possible 19,191 B.T.U. giving a combined boiler and furnace (grate) efficiency of 75.8%.
The following table shows the relation between the per cent. of total steam generated and for atomizing the oil; the pounds of steam for atomizing per pound of oil and the net equivalent evaporation from and at 2 I F. per one pound of oil, on a basis of 15 pounds equivalent evaporation per pound of oil.