. Railway mechanical engineer . 57 sq. ft. The cylinders are between the framesand are 2iy& in. by 26 in. and the steam pressure is 180 lb. signed by the locomotive engineer, H. N. Gresley, called thetwin-tube superheater. Two headers are used, one above inthe usual position for saturated steam and another lower inthe smoke box for the superheated >team, the two being con-nected by the superheating elements. Each element has fourlengths of tube, but instead of all four lengths of tube beingin one flue tube, as is the case in the Schmidt system, twolengths, that is one loop, are in one flue
. Railway mechanical engineer . 57 sq. ft. The cylinders are between the framesand are 2iy& in. by 26 in. and the steam pressure is 180 lb. signed by the locomotive engineer, H. N. Gresley, called thetwin-tube superheater. Two headers are used, one above inthe usual position for saturated steam and another lower inthe smoke box for the superheated >team, the two being con-nected by the superheating elements. Each element has fourlengths of tube, but instead of all four lengths of tube beingin one flue tube, as is the case in the Schmidt system, twolengths, that is one loop, are in one flue and the other two inthe flue immediately below. The claims made for thisarrangement are that smaller flue tubes may be used, thus thebridge pieces in the tube sheets are wider, also all elementsare interchangeable and each can be taken out without dis-turbing any of the others, further, compared with a Schmidtsuperheater of the same amount of heating surface, thissuperheater permits an increase in the evaporative surface of. biaC k
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroadengineering
