. Railway mechanical engineer . 0. Heat transferred to 1 lb. of water in boiler and economizer. 1,056 R:ites 71. Coal fired per so. ft. per hr lb. 73. Water evaporated per hr 9,068 lb. 73. Heat transmitted per sq. ft. boiler heating surface per 74. Heat transmitted per sq. ft. economizer heating surface per hr. . Heat Balance, Boilers and Economizer, Per Lb. Coal as Fired Percent 75. Heat absorbed by boiler (and thermal efficiency boiler only) 75 76. Heat absorbed by economizer 410 3 77. Heat absorbed by boiler and economizer and overa
. Railway mechanical engineer . 0. Heat transferred to 1 lb. of water in boiler and economizer. 1,056 R:ites 71. Coal fired per so. ft. per hr lb. 73. Water evaporated per hr 9,068 lb. 73. Heat transmitted per sq. ft. boiler heating surface per 74. Heat transmitted per sq. ft. economizer heating surface per hr. . Heat Balance, Boilers and Economizer, Per Lb. Coal as Fired Percent 75. Heat absorbed by boiler (and thermal efficiency boiler only) 75 76. Heat absorbed by economizer 410 3 77. Heat absorbed by boiler and economizer and overall— thermal efficiency 78 78. Heat lost in drv gases leaving economizer above fire- room temperature 1,260 9 79. Heat lost in steam in flue gases leaving economizer above fire-room temperature 470 3 50. He.^t lost by not burning carbon monoxide 0 0 81. Heat lost in carbonaceous matter in ash and 160 1 83. Radiation loss and errors 1,140 9 83. Total (Items 77-83) and calorific value of coal 13,900 100 DEViaES. Triple Combination Punch and Shear THE combination punch, plate shear and bar, angle and In addition, the Pels combination punch and shear willtee cutter, illustrated and known as the t)-pe Bluefg, cut with interchangeable blades, beams and channels up tois being introduced to the railroad field by Henrj- Pels its capacity. Another important advantage is that three men& Co., Inc., New York. This machine has given satisfac- can operate the machine simultaneously at its highesttory ser\ice in various industries throughout the world and capacities without interfering with each other. Coping,is accompanied by the strongest guarantees as to capacity, notching and special punching attachments can be furnished as desired; also, blades for cut-ting rails or special shapes. Themachine is made in nine sizes ofany throat depth required. When dull knives are used forcutting thin sheet steel, a is put on the macliine thanif a much thicker plate is cut w
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroadengineering
