. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . oads have made economytests of the feed water heater in compari-son with the injector ; and some very excel-lent results have been obtained. The com-mittee has no information as to how thesetests were run and can not vouch for theaccuracy of the results reported, but givethem as information. When the locomotive is standing or drifting the use of the heater is not rec-ommended. Objection has been made tothe application of feed water heaters onthe ground that it would be impossible toprevent th
. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . oads have made economytests of the feed water heater in compari-son with the injector ; and some very excel-lent results have been obtained. The com-mittee has no information as to how thesetests were run and can not vouch for theaccuracy of the results reported, but givethem as information. When the locomotive is standing or drifting the use of the heater is not rec-ommended. Objection has been made tothe application of feed water heaters onthe ground that it would be impossible toprevent their use when there was no ex-haust steam to heat the water and thencold water introduced into the boiler wouldhave a bad effect on the flues and firebox. The replies to the questionnaire indicatethat there is no evidence that the use of thefeed water heater has resulted in anydamage to the boiler. The use of exhaust steam from the aux-iliaries, such as air pump, headlight gen-erator and stoker may be advisable in orderto maintain the temperature of the feedwater when the locomotive is not .\PPROVED FORM AND METHOD OF AF- STAYBOLTS IN LOCOMOTIVE BOILERS Road Xo. 1—Closed Tvpe Increased evaporation per pound of coal per cent Coal savinq per gross ton miles per cent Increase in over-all boiler, furnace and grate efficiency per cent Type of locomctive tested (cylinders 27 in. by 30 in., drivers 69 200 lb. boiler pressure) 4-8-2 Road No. 2—Open Type Coal saving 12per cent Road No. 3—Closed Type Increased evaporation per pound of coal per cent Decrease in fuel consumption per cent Decrease in superheat per cent Road No. 4—Open Type Saving in coal per 1,000 ton miles per cent Increased boiler efficiency per cent Exhaust steam recovered from the cylinders, condensed and returned to the boiler per cent Decrease in superheat, deg. F Road No. 5—Closed Type Saving in coal per 1,000 ten miles per cent
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