Steam Heating for Buildings: Or, Hints to Steam Fitters. Being a Description of Steam Heating Apparatus for Warming and Ventilating Private Houses and Large Buildings, with Remarks on Steam, Water, and Air, in Their Relation to Heating; to which are Added Useful Miscellaneous Tables

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J. Wiley and sons, 1881 - Steam-heating - 260 pages
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Page 223 - Troy. 16 drams = 1 ounce. oz. 16 ounces = 1 pound. lb. 25 pounds = 1 quarter. qr. 4 quarters = 1 hundred. cwt. 20 cwt., 2,000 lbs.
Page 27 - Divide the difference in temperature, between that at which the room is to be kept and the coldest outside atmosphere, by the difference between the temperature of the steam pipes and that at which you wish to keep the room, and the product will be the square feet, or fraction thereof of plate or pipe surface to each square foot of glass (or its equivalent in wall surface).
Page 141 - ... latent heat of steam. When a solid becomes a liquid, or a liquid becomes a vapor, heat is absorbed, more than was necessary to raise it to the temperature of conversion, and this latent heat does work in the destruction of the force of cohesion and other occult changes which take place, and must be absorbed from some oilier substance.
Page 161 - In order to effect this, the pipe is wound about first with asbestos, followed by hair felting, porous paper, manilla paper, finally thin strips of wood laid on lengthwise, and the whole fastened together by a copper wire wound spirally over all. This is thrust into a wooden log, bored to leave an intervening air chamber between the pipe and the wood, and of sufficient size to leave from 3 in.
Page 27 - It must be distinctly understood that the extent of heating surface found in this way, offsets only the windows and other cooling surfaces it is figured against ; and does not provide for cold air admitted around loose windows, or between the boarding of poorly constructed wooden houses. These latter conditions, when they exist, must be provided for separately, and usually require as much as 50 per cent. additional ; a good...

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