Cooke, Josiah Parsons, 1827-1894 · Boston, Little, Brown and Company · leaf 567
of the section of the chimney, and thedifference of temperature between the inner and exterior air, areknown. The draught of an ordinary brick flue is caused in the sameway as that in the glass chimney of a lamp. The weight of thecolumn of heated gas CD (Fig. 391) is less than that of thecolumn of… … between the two masses of gas. A good draught depends on thefollowing obvious conditions: —1. The size of the flue should be proportional to the amount of gas it isrequired to carry ; for if too large,cold currents may descend in theangles of the flue, while a heated oneascends in the axis. 2. The…
Matter · Heat
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