Mechanical Contracting & Plumbing January-December 1909 . -c lar service from an isolated plant, dueto the fact that a boiler is not required,In the event that the customer desiresto continue heating water, it is done bysupplying steam from the street mainsto a special form of water heater whichthe American District Steam Co. manu-facture. The water flows through thisand the steam thus condensed can beutilized and measured by meter, as in abuilding heated by steam. In otherwords, the steam is the fuel to heat thewater. In giving up its heat to the surround-. Fig. 7.—Anchor Special. ing water t
Mechanical Contracting & Plumbing January-December 1909 . -c lar service from an isolated plant, dueto the fact that a boiler is not required,In the event that the customer desiresto continue heating water, it is done bysupplying steam from the street mainsto a special form of water heater whichthe American District Steam Co. manu-facture. The water flows through thisand the steam thus condensed can beutilized and measured by meter, as in abuilding heated by steam. In otherwords, the steam is the fuel to heat thewater. In giving up its heat to the surround-. Fig. 7.—Anchor Special. ing water through the tubes in the heat-er the steam is condensed and this con-densation discharged from the trap hasa temperature very near the boilingpoint. The quantity of steam required to heatin this manner is no greater than thequantity required to heat directly bysteam. The condensation from the radi-ator in the heater, after passing throughthe trap, is allowed to flow through acontinuous cast iron economizing coilplaced in each building. The. coil isplaced in a tin-lined box having an in-let for fresh air and an outlet througha register placed in the floor above forheated air, so that in passing throughthe economizing coil the condensationtransmits its heat to the air, which eir-
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