. Journal of electricity. imentally to be proportional to the difference in mercuryheights indicated on the manometer shown on the right in the il-lustration. By calibrating these readings prior to a test the steamused in atomization may be conveniently and readily determinedduring a test. square inch, d the difference in pressure between thetwo sides in pounds per square inch, and K is a con-stant which has a value of .93 for a short pipe and .63for a hole in a thin plate or a safety valve. March 1, 1918] \ JOURNAL OF ELECTRICITY 237 This latter formula is applicable in the measure-ment of st
. Journal of electricity. imentally to be proportional to the difference in mercuryheights indicated on the manometer shown on the right in the il-lustration. By calibrating these readings prior to a test the steamused in atomization may be conveniently and readily determinedduring a test. square inch, d the difference in pressure between thetwo sides in pounds per square inch, and K is a con-stant which has a value of .93 for a short pipe and .63for a hole in a thin plate or a safety valve. March 1, 1918] \ JOURNAL OF ELECTRICITY 237 This latter formula is applicable in the measure-ment of steam to burner utilized in the atomizationof fuel oil. In the following lines a method will beoutlined setting forth the necessary apparatus in-volved in determining the variables in the of actually substituting and solving numeri-cally, however, it is far simpler to construct a chartand pick from this the steam consumption for anygiven steam pressure and pressure difference in anorifice placed in the CALIBRATION OF ORIFICE FOR MEASUREMENT OF STEAMUSED IN ATOMIZATION Previous to a boiler test the manometer which registers the pres-sure difference at the faces of the orifice is carefully calibrated bycondensing the steam flow and weighing the hourly data when plotted on a curve as shown above enable theengineer to quickly ascertain the steam used in atomization at anytime during a test. Here then is presented a ready and accurate meansof steam measurement for atomization purposes. Adiaphragm with an orifice opening of .5 of a squareinch in area is inserted in the steam line. On bothsides of this diaphragm are drilled holes which aretapped for a %-inch pipe. The pipes are then con-nected to both legs of a manometer filled with mer-cury. A manometer is nothing more nor less than aU-tube filled with mercury. When these two ends areconnected with pipes of varying pressures, the mer-cury in the U-tube will of course be raised to a higherpoint in
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Keywords: ., bookcentury1900, bookdecade1910, bookidjo, booksubjectelectricity
