Mechanical Contracting & Plumbing January-December 1908 . column of heated air or gases inside thechimney and a column of air of equal PLUMBER AND STEAMFITTER December 1, 1908 height on the outside of the hotter the gases the lighter theywill be, and hence the more rapid will bethe movement, or, in other words, thegreater the difference in temperature be-. signable to the interior arrangement ofthe chimney and the connections leadingfrom the heating or cooking apparatusto the chimney flue, and the second aredue to local conditions by means ofwhich interfering wind currents at times
Mechanical Contracting & Plumbing January-December 1908 . column of heated air or gases inside thechimney and a column of air of equal PLUMBER AND STEAMFITTER December 1, 1908 height on the outside of the hotter the gases the lighter theywill be, and hence the more rapid will bethe movement, or, in other words, thegreater the difference in temperature be-. signable to the interior arrangement ofthe chimney and the connections leadingfrom the heating or cooking apparatusto the chimney flue, and the second aredue to local conditions by means ofwhich interfering wind currents at timeseffect the working of the chimney. Sothat if this fact is thoroughly recognizedthe cause of the trouble is made thatmuch easier of detection. Causes of Trouble. Draft troubles in general may be sum-marized as follows:Chimney too too small. tween the inside and outside of thechimnej flue the greater will be thevelocity of the gases moving throughthe flue. More trouble, inconvenience and wor-riment is unnecessarily occasioned thestove dealer and those engaged in theheating business from poor drafts thanfrom any other one cause. The chimney and its good or poordraft has more to do with the success orfailure of heating and cooking apparatusthan is frequently recognized. A few of the general defects that maybe found in chimneys have been pointedout in t
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