Merchant, F. W. (Francis Walter), 1855-1937, Chant, Clarence Augustus, 1865-1956 · Toronto : Copp Clark · leaf 165
modification of the last experiment. Connect an open re-servoir B with a flask, as shownin Fig. 175. Taking care not toentrap air-bubbles, fill the flask,tubes, and part of the reservoir■with water. To show the directionof the currents, colour the water inthe reservoir with potassium per-manganate.… … FiQ. 176.—Hot-water heatino; system. A,furnace ; C, C, C, pipes leading to radia-tors, B, R, and expansion tank B; D, D,pipes returning water to furnace afterpassing through radiators. In a hot-waterheating system (Fig.176) a boiler takesthe place of theflask. The hot waterpasses through radi-
Physics
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