Cyclopedia of heating, plumbing and sanitation; a complete reference work . Of the heat given offby the coal, it is safe to as-sume that NOO0 heat unitsper pound arc transferredto the water in the there arc (.l()()square feel of radiation onthe job. Add £ to coverthe loss of heat from pipes;total = 1200 square that in coldestweather 5 pounds of coalare burned per hour oneach square foot of grate; that is, 5X8000 = 40,000heal units are transferred to the water in the heat given oil per hour by the radiators andpipes is 1200 X 150 180,000 heat units. This, d
Cyclopedia of heating, plumbing and sanitation; a complete reference work . Of the heat given offby the coal, it is safe to as-sume that NOO0 heat unitsper pound arc transferredto the water in the there arc (.l()()square feel of radiation onthe job. Add £ to coverthe loss of heat from pipes;total = 1200 square that in coldestweather 5 pounds of coalare burned per hour oneach square foot of grate; that is, 5X8000 = 40,000heal units are transferred to the water in the heat given oil per hour by the radiators andpipes is 1200 X 150 180,000 heat units. This, di-vided by 40,000, the heat utilized per square foot ofgrate, equals 1. square feet of grate required. Some judgment is necessary in assuming therate of combustion; l>n! this varies from about -5 pounds per squarefoot of grate per hour in small heaters, to 7 or 8 in larger ones,operated by a regular attendant. HOT=WATER RADIATORS AND VALVES Hot-water radiators have top and bottom nipple connections, asshown in Fig. 31, Part II (Heating and Ventilation). A hot-water. Fig. 92. Tool forDrilling Pipe Flanges. ^ Fig. 93. Cold Chisel. radiator may be used for steam, but a steam radiator cannot be usedfor hot water. The valve may be placed at the top or the bottom—it 278 STEAM AND HOT WATER FITTING 55 matters little which; it is, however, more convenient, though moreunsightly, at the top. The circulation will be practically as good whenwhe valve is located at the bottom. One valve is all that is necessary,
Size: 1154px × 2165px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthoramericanschoolchicago, bookcentury1900, bookdecade1900
