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 (Google eBook)
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air duct air-valve angle valves arch ash-pit atmosphere bottom brick brickwork bridge-wall building burned cast-iron CHAPTEE chimney circulation clean coal coil cold condensed connection constructed cool crack cross section cubic feet cubic foot dead plate diameter diaphragm difference direct radiation dome door draft-door drop tubes engineer evaporated expansion feet of heating fire fire door fire-box fitter floor front furnace gases give globe valve gravity apparatus heater heating apparatus heating surface high pressure hole horizontal boilers increase inside iron lever low pressure main return pipe main steam-pipe necessary ordinary passing prevent radiating surface rate of combustion regulator return riser safety valve sensible heat shell shown in Fig shows smoke pipe sorbed space square feet square foot square inches steam pipe steam-fitter steam-heater sufficient temperature thick tion trap upright boilers velocity ventilation vertical warm water-line weight wrought iron
Page 24 - 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 135 - ... 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/rowi some other substance.
Page i - 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.
Page 146 - CUBIC FOOT FOR VARIOUS TEMPERATURES. It will be seen by a study of the table, that the quantity of vapor per cubic foot of air increases very rapidly as the temperature advances — a common difference of about 25 degrees in the rise in temperature of the air, doubling the quantity of moisture it is able to take up. Hence, all other things being equal, an increase in temperature of 25 degrees in a drying-room •will reduce the time for drying about one half, and an increase of 50 degrees will reduce...
Page 24 - It must he 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 by additional heating surface. EXAMPLE 1.
Page 153 - 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 214 - ... laid in the pattern loft for some time. A square foot of cast-iron, one inch thick, weighs 37£ pounds. To find what a square foot of any other thickness will weigh, multiply 37£ by the thickness in . inches, or fractious of an inch. A square foot of rolled wrought-iron, one inch thick, weighs 40 Ibs. To find the weight of boiler plates, or sheet-iron, per square foot, multiply 40 by the decimal of an inch in thickness the required plates are to be. TABLE No. 11. THE FOLLOWING TABLE SHOWS THE...
Page 145 - THE QUANTITY OF WATER WHICH AIR is CAPABLE OF ABSORBING TO THE POINT OF MAXIMUM SATURATION, IN GRAINS PER CUBIC FOOT FOR VARIOUS TEMPERATURES. XIII. RELATIVE HUMIDITY OF THE AIR.
Page 43 - ... require great care; for should the boiler have an automatic water feeder set for the true water line, it will fill up, but cannot discharge again when the steam goes down ; while, if it has no feeder, there is danger of spoiling the boiler, as the water is in the pipes in the form of steam.
Page 140 - XVIII. AIR. Air is a mixture whose parts are not chemically combined, consisting of about 77 per cent, of nitrogen and 23 per cent, of oxygen, by weight, when considered pure, ie, when it is in the condition best suited to support animal life. It also contains from about ^ 0 jj 0 0.