File:Transactions (1871) (14578280528).jpg

Identifier: transactionsmining41amer (find matches)
Title: Transactions
Year: 1871 (1870s)
Authors: American Institute of Mining, Metallurgical, and Petroleum Engineers
Subjects: Mineral industries
Publisher: New York (etc.)
Contributing Library: Gerstein - University of Toronto
Digitizing Sponsor: University of Toronto

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ioDS, and two additional observation-holes nearer thefire-box, it is possible, though perhaps never necessary, to col-lect 80 or 90 samples of gas during the same 20-nnn. period,each sample representing the average of the gases passing theopen end of its small tube during this period. Figs. 3 and 4 show longitudinal, horizontal and vertical sec-tions of the furnace, and Figs. 5 and 6 show two typical cross-sections of the furnace. A Murphy mechanical stoker is at thefront end of the furnace, and a 210-h.p. Heine safety boiler atthe rear end. The observation-holes at 5-ft. intervals are shownthrough the left side-wall in Fig. 3. The side-walls of this furnace are double, the inner being 9in. thick and made entirely of fire-brick, while the outer is 8in. thick and faced with red pressed-brick. Between the twois a 2-in. air-space. The arch forming the roof of the furnaceis also double, the inner arch being of fire-brick, 9 in. thick, the 250 THE COMBUSTION OF COAL. aBiioa 3NI3H rrt r ...
Text Appearing After Image:
THE COMBUSTION OF COAL. 251 outer of pressed-brick and only 4 in. thick, and the space be-tween the two being completely filled with a layer of asbestos1 in. thick. The floor is made of a layer of asbestos-board laid 3 Air space

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