Worthen, William Ezra, 1819-1897, [from old catalog] ed · New York, Appleton · leaf 657
ointsand making unseemly cracks. Thus, taking the air at 10° and heating it to70°, the ordinary temperature of our rooms requires about nine times the mois-ture contained in the original external atmosphere, and, if heated to 100°, asmost of our hot-air furnaces heat the air, it would require about… … Fig 1532. from 12 to 36 diameter of pot, from 2 to 6 outside diameter, and 5 to 6height of case. The brick-set furnaces are from 20 to 32 pot, outside brick-work from 5 to 6 square, walls 4 thick, height 6 to 7. It is difficult to giveany rule for the heating capacity, A 22 pot should be adequate…
Mechanical drawing
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