Identifier: notesonheatingve01alle (find matches)
Title: Notes on heating and ventilation
Year: 1906 (1900s)
Authors: Allen, John Robins, 1869-1920
Subjects: Heating Ventilation
Publisher: Chicago, Domestic engineering
Contributing Library: The Library of Congress
Digitizing Sponsor: The Library of Congress

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st used is 38 inches. They can be pur-chased, however, in varying heights from 15 to 45inches. The radiators of various heights are ratedat a certain number of square feet per section. Forinstance, a 38-inch two-column radiator, as shownin Fig. 7, is rated at 4 square feet per section. Asa rule, however, radiators are slightly overrated.A radiator containing 48 square feet has an actualsurface, when measured, of about 47 square feetin most two-column radiators. In some cases, par-ticularly in radiators having a large number of col-umns, the radiators are very much overrated. Inone instance a radiator rated at 36 square feet hadan actual surface of only 2^ square feet. In pur-chasing a radiator, therefore, it is important toknow that it has approximately the surface givenin the catalogue of the manufacturer, as the radi-ating power depends primarily upon the square feetof surface it contains.. Comparing lines 2 and 6 of Table VII you willnotice that the two-column wrought iron radiator
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Fig. 7. Two-Column Cast Iron Radiator.

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