Cyclopedia of Architecture, Carpentry, and Building: A General Reference Work ..., Volume 10American Technical Society, 1916 |
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Cyclopedia of Architecture, Carpentry, and Building: A General ..., Volume 1 American Technical Society No preview available - 2013 |
Cyclopedia of Architecture, Carpentry, and Building: A General ..., Volume 1 American Technical Society No preview available - 2012 |
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air-valves ball cock bath bends boiler bottom bowl branch building burner carbonic acid cast-iron check-valve Chicago circulation closed coal cock coil cold cold service cold-air computing condensation connection Courtesy crown vent cylinder damper diameter difference direct radiation discharge drain engine exhaust steam expansion tank faucets fittings fixtures floor flow flue flush friction furnace grate heat loss heat units heater heating surface heating system horizontal hot water hot-water hour inches indirect inlet iron joint lavatory lead limewater live steam method mineral wool necessary offset ordinary outlet pipe Pipe Wrench placed plumber plumbing pounds pressure pump radiating surface reservoir risers seal sections sewage sewer shown in Fig side sink siphon soil solder square feet square foot stack steam heating supply Table temperature trap usually valve velocity ventilation vertical wall warm air waste wiped
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Page 131 - British thermal unit is the amount of heat required to raise the temperature of 1 pound of water 1 degree Fahrenheit.
Page 98 - BTU per hour per square foot of surface per degree difference in temperature between the radiator and the surrounding air, when working under ordinary conditions; and this holds true whether it is filled with steam or water.
Page 65 - The size of the largest riser should usually be limited to 2^ inches in school and dwelling-house work, unless it is a special pipe carried up in a concealed position. If the length of riser is short between the lowest radiator and the main, a higher velocity of 20 feet or more may be allowed through this portion, rather than make the pipe excessively large. TABLE XVIII TABLE XIX Radiating Surface Supplied by Steam Risers EXAMPLES FOR PRACTICE 1.
Page 89 - The conditions to be met are practically the same as in direct heating, the only difference being that the radiators are at the basement ceiling instead of on the floors above. The exact method of making the pipe connections will depend somewhat upon existing conditions; but the general method shown in Fig. 75 may be used as a guide, with modifications to suit any special case. The ends of all supply mains should be dripped, and the horizontal returns should be sealed if possible. Pipe Sizes. The...
Page 25 - For the best types of househeating boilers, we may assume a combustion of 5 pounds of coal per square foot of grate per hour, and an average efficiency of 60 per cent, which corresponds to 8,000 BTU per pound of coal, available for useful work. In the case of...
Page 5 - PRINCIPLES OF VENTILATION Closely connected with the subject of heating is the problem of maintaining air of a certain standard of purity in the various buildings occupied. The introduction of pure air can be done properly only in connection with some system of heating; and no system of heating is complete without a supply of pure air, depending in amount upon the kind of building and the purpose for which it is used. Composition of the Atmosphere. Atmospheric air is not a simple substance but a...
Page 24 - ... while in the case of brick linings very little heat is given off in this way and the rooms are likely to become somewhat cooled before the fresh coal becomes thoroughly ignited. Combustion Chamber. The body of the furnace above the fire pot, commonly called the dome or feed section, provides a combustion chamber. This chamber should be of sufficient size to permit the gases to become thoroughly mixed with the air passing up through the fire or entering through openings provided for the purpose...
Page 46 - X 225 = 240; that is the efficiency varies directly as the difference in temperature between the steam and the air of the room. It is not customary to consider this unless the steam pressure should be raised to 10 or 15 pounds or the temperature of the rooms changed 15 or 20 degrees from the normal. From the above it is easy to compute the size of radiator for any given room. First compute the heat loss per hour by...
Page 56 - HJ — 1 from the top ; and the 'condensation drains back through the same pipes, and is carried along with the flow of steam to the extreme end of the main, where it is returned to the boiler. The main is made large, and of the same size throughout its entire length. It must be given a good pitch to insure satisfactory results.
Page 6 - If the contents of the bottle remains clear, treat the bottle of 200 'cubic centimeters in the same manner; a milky appearance or turbidity in this would indicate 12 parts in 10,000. In a similar manner, turbidity in the 250 cubic centimeter bottle indicates 10 parts in 10,000; in the 300, 8 parts; in the 350, 7 parts and in the 400, Fig ' 23