Lynde, Carleton John, b. 1872 · New York, Macmillan · leaf 127
oom entersthe stove to make the draft. This decreases the pressure ofthe air in the room slightly. Fresh air from outside is thenforced into the room through the crevices about the doors andwindows by atmospheric pressure. Thus a continuous supplyof fresh air is forced into the room, and the room… … FIG. 79. — Convection currentsbetween hot and cold rooms. MOVEMENT OF HEAT. HEAT APPLIANCES enters above the fire and passes up the chimney. Fresh airis then forced in from outside to take the place of this air,
Physics · Home Economics
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