. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . ff-set the advantage. The maxi-mum benefit possible from heating thefeed by waste products cannot be Figs. 2 and 3 show the next im-portant development. At this stage theexhaust steam was dealt with in thesmall heater placed above the driving-wheel splasher of the four-coupled pas-senger engine Xo. 41. which was thenext to be used for the experimentalwork. The exhaust-steam heater con-sisted of a cylinder. 5 ft. long by 7fjj in. 340 RAILWAY AND LOCOMOTIVE ENGINEERING. August, 1911. in diamete
. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . ff-set the advantage. The maxi-mum benefit possible from heating thefeed by waste products cannot be Figs. 2 and 3 show the next im-portant development. At this stage theexhaust steam was dealt with in thesmall heater placed above the driving-wheel splasher of the four-coupled pas-senger engine Xo. 41. which was thenext to be used for the experimentalwork. The exhaust-steam heater con-sisted of a cylinder. 5 ft. long by 7fjj in. 340 RAILWAY AND LOCOMOTIVE ENGINEERING. August, 1911. in diameter, containing thirty-seven:;( in tubes. \ heating surface of 36square feet was thus provided. Theheater was connected by a pipe fromthe front end to the blast-pipe near thenozzle. At its other end it was pro-vided with a drip-pipe. The feed en-tered at the back end, and passed outto the smoke-box heater at the front,flowing in a direction contrary to thesteam. The flue-gas heater was alsoradically altered and arranged withina specially-designed smoke-box. Thisheater now consisted i l six cylinders. FIG. 3. FRONT OF ENGINE NO. 41. in series, each 3 ft. long by 13M. diameter, and each containing thirty-one tubes. The total heatingsurface provided by the 186 tubes was273 sq. ft., in addition to which usefulsurface, amounting to some 63 sq. ft.,was provided by the exterior of thedrums. The aggregate flue area was 372sq. ins. From the illustration it willbe seen that the smoke-box heater cyl-inders were fixed horizontally to a ver-tical diaphragm plate. The blast-pipewas carried through this partition-plate, into what was, virtually, the up-take beyond, where the exhaust wasdirected up an inclined chimney. Theonly passage for the flue gases on theirway from the smoke-box proper to thechimney was by way of the heatertubes. The feed passed through all theheater drums in succession. Feedtemperatures of 230 deg. Fahr. were ob-tained with this arrangement of exhaustand smo
Size: 1617px × 1546px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, bookidrailwaylocom, bookyear1901
