. Mechanical Contracting & Plumbing January-December 1909. s maintained throughout your building. Dont delay investigating this permanent inpostal card will bring us together. Our expericnothe asking. stment. R. J. SHANNON plumbing and titrating tCnutrartm-1233 Queen Street West, - Toronto LONG DISTANCE TELEPHONE, PARK 243 Ad. Run in Country Papers by Toronto Plumber. at Montreal, he was himself elected vicepresident for Ontario in the He employs about a dozen menthe year round. October 15, 1909 PLUMBER AND STEAMFITTER High Pressure Connections for Steam Heating J. F. Bennett, i
. Mechanical Contracting & Plumbing January-December 1909. s maintained throughout your building. Dont delay investigating this permanent inpostal card will bring us together. Our expericnothe asking. stment. R. J. SHANNON plumbing and titrating tCnutrartm-1233 Queen Street West, - Toronto LONG DISTANCE TELEPHONE, PARK 243 Ad. Run in Country Papers by Toronto Plumber. at Montreal, he was himself elected vicepresident for Ontario in the He employs about a dozen menthe year round. October 15, 1909 PLUMBER AND STEAMFITTER High Pressure Connections for Steam Heating J. F. Bennett, in the Plumbers Trade Journal, Discusses theInstalation of Steam Heating Systems and the Pressure Radi-ators Can Carry. Generally speaking, heating work now-adays is usually in the form of one, ortwo-pipe, low pressure gravity returnsystems, or what is known as the va-cuum-vapor systems. Occasionally, how-ever, high pressure work, or steam cir-culation under high pressure, is re-quired. Just what really (-(institutes highpressure is a question about which. Fig. 1. Condensation Return to BoilerThrough Receiver and Return Trap. many fitters disagree. The ordinarylow pressure gage registers only 30pounds, consequently it is customary tocall a pressure in excess of 30 pounds,above the atmosphere, high pressure. Low pressure gravity return systemsare usually designed with a sufficientquantity of radiation to heat a build-ing at from one to five pounds pres-sure. The temperature of steam increases,according to the increase in pressure,approximately as follows : Pounds. Temperature. 1 212 degrees 5 228 10 240 25 267 50 295 75 320 100 337 Obviously, a 100 square foot radiatorat 100 pounds pressure, will emit moreheat than will a. radiator of the samesize at one pound pressure. Thus, wherethe question of space for radiation en-ters into consideration, a building maybe heated by less radiating surface un-der high pressure, than under low pres-sure. Again : The radiator connections andsren
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