Document pxKbVnNnK0xMM8wbx18M8QXd

POWERS DATA SHEETS Calculate Continuous B From Chloride Cone WllEftB CONTINUOUS OOlLliR BLOW* ooww must be used to keep the dis solved solids within specified limits, the smeller blowndown flow must carry nut the some trnounl of impurities car* ried in by the feedwater entering the drum. The chloride concentrations in feedwater and boiler water can be used < calculate the percentage rcte of blowdown needed to maintain constant boilerwater concentration. Chloride concentrations can be do* termined by titrating the aamplea with silver nitrate solutions, using potas* alum chromate as on indicator. To find the blowdown rate as a percent oi feed water flow, locate the boiler-water and feedwater concentrations on their re* opeclive scales in the nomogram, lay a straight edge between these, two read ings, and read the blowdown rote at'lie' intersection with the center inclined scale. By John F Hyom 126 (67) POWER SaP*' FIOWMATIC 7at MUNICIPAL POWER PLANT MONROE, LOUISIANA WITHIN "PieU OR T/titUC* ?/s INCH COPES Boiler Feed Water Regulators had been in service since 1924 at the-Municipal Power Plant, Monroe, Louisiana. They had required no more than routine attention by plant per sonnel. So, when the 400-psi extension was planned, it was only natural to select the mod ern two-element COPES Flowmatic for the gasfired Babcock & Wilcox boiler. Results have been all that could be desired. Water level is held within plus-or-minus one-half inch. Write for Performance Report 473 which tells the story. NORTHERN EQUIPMENT COMPANY 981 OftOVK OIIVI, Bill, PIN NS VI VANIA BRANCH PLANTS In Canada, Instead, franca and Austria AapmMirafhra* fvarpwhara COPES fan.... Boiler Food Water,Control . . ..Excess or Constant Pressure Control, Steam or Water ... liquid level Control.., Balanced Volves ... Dosuperheaters . . . Boiler Steam Tern* perature Control.. . Hi-low Wafer Alarms.