. The Ontario high school physics. Fig. 315.—Hot-water heating system. A,furnace ; C, C, C, pipes leading to radia-tors R, JR. and expansion tank B; D, D,pipes returning water to furnace afterpassing through radiators. HEATING BY HOT-AIR FURNACES 283 tube D to the bottom of the flask and the colourless waterin C appears at the top of the reservoir. In a hot-water heating system (Fig. 315) a boiler takesthe place of the flask. The hot water passes throughradiators in the various apartments of the house and thenreturns to the furnace. An expansion tank B is also con-nected with the system. Obser
. The Ontario high school physics. Fig. 315.—Hot-water heating system. A,furnace ; C, C, C, pipes leading to radia-tors R, JR. and expansion tank B; D, D,pipes returning water to furnace afterpassing through radiators. HEATING BY HOT-AIR FURNACES 283 tube D to the bottom of the flask and the colourless waterin C appears at the top of the reservoir. In a hot-water heating system (Fig. 315) a boiler takesthe place of the flask. The hot water passes throughradiators in the various apartments of the house and thenreturns to the furnace. An expansion tank B is also con-nected with the system. Observe that, as in the flask, thehot water rises from the top of the heater and returns at thebottom. 322. Steam Heating. Steam also is employed for heatingbuildings. It is generated in a boiler and distributed by itsown pressure through a system of pipes and radiators. Thewater of condensation either returns by gravitation or ispumped into the boiler. 323. Heating by Hot-Air Furnaces. Hot-air systems ofheating are in very common us
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Keywords: ., bookcentury1900, bookdecade1910, bookpublishe, booksubjectphysics
