The Gas Engineers Pocket book Comprising Tables Notes And Memoranda Relating
The Gas Engineers Pocket book Comprising Tables Notes And Memoranda Relating
Henry Oconnor
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Welsh coal. P2 260 GAS ENGINEER'S POCKET-BOOK, Relative Heating Power of Fuel. (Fritz. ) Lbs. Of Water Evaporated by 1 Ib. Of Fuel. Fuel. Theoretical. In Steam Boilers. In Open Boilers. Anthracite 12-40 Coal 11-51 5-2 to 8 5-2 Charcoal .... 10-77 6, 6-75 3-7 Coke 9 to 10-8 5, 8 Brown Coal . 7'7 2-2, 5-5 1-5 to 2-3 Peat 5-5 to 7-4 2-5 . 4-5 1-7 2-3 Wood .... 4-3 to 5-6 2-5, 3-75 1-85 . , 2-1 Straw . . . . 3-0 1-80, 1-93 Gas reduced to Ibs. Coal . 4 . G In heating boilers the average amount of th...eoretical heating power of fuel that is utilised is only 47 per cent. , the remainder being lost through imperfect combustion, radiation, and other causes. Evaporative Power of Fuel. Another set of tests gave : 1 Ib. Coke evaporates 9 Ibs. Water (feed water supplied at 212F. ). 1 coal 9 1 slack 4 1 oak (dry) 4 1 pine 2 An average of 27 coals for fuel measured about 40 cubic feet per ton. Cost of evaporating 10 Ibs. Of water from steam boilers. Breeze at 4/6 per ton = 0-03f>d. Coke at 12/- per ton = 0'097tf.
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