. Electrical news and engineering. nable limits, we hardly expect serious trouble from thissource. Prevent Smoke and Save Coal—Boiler RoomInstruments Help Save Fuel Just now every practical suggestion along the lines offuel conservation is a matter not only of personal comfortbut, what is vastly more important, of the national the best place to save coal is the place where itis being used, and the boiler room offers a fruitful field forthe of fuel economj. The following summary ofthe experience of the combustion engineers of the Westing-house Electric & Manufacturin
. Electrical news and engineering. nable limits, we hardly expect serious trouble from thissource. Prevent Smoke and Save Coal—Boiler RoomInstruments Help Save Fuel Just now every practical suggestion along the lines offuel conservation is a matter not only of personal comfortbut, what is vastly more important, of the national the best place to save coal is the place where itis being used, and the boiler room offers a fruitful field forthe of fuel economj. The following summary ofthe experience of the combustion engineers of the Westing-house Electric & Manufacturing Company, as gained fromtheir own experiments and their observations of practicaloperation in customers boiler rooms, will therefore be ofvalue. The formation of smoke, which contains much uncon-sumed fuel, should be prevented by proper firing methodsand the flue gases should contain from 10 to 12 per cent, ofCO:. Fires should be kept free from holes, and the fuelshould be so distributed over the grate as to prevent the in-. flux of excess air which accompanies thin fires and the in-complete combustion resulting from excessive thickness offires. The proper fuel distribution for a given type of stokeris illustrated in the accompanying figure. Gauges which indicate boiler operating conditions shouldconstitute a part of the equipment of every boiler room. Asa minimum, the instrument equipment should consist of draftgauges connected with the furnace above the fuel bed andon the boiler side of the flue damper, and a steam flow meterfor each boiler. Gauges and dampers should be convenientlylocated, otherwise they will not be used. The loss due to the presence of unburned fuel in the ashshould be avoided, boiler settings should be kept air-tightand baffles in proper condition, and under no conditionshould live steam leaks be tolerated. Exhaust steam shouldbe used in place of live steam for auxiliary purposes wher-ever practicable. All steam pipes should be insulated andthe tubes ke
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