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| | One Hot Fireplace | THIS OLD HOUSE |
 | | The Rumford fireplace, built in the sanctuary where the altar used to be, was to be the focal point of the enormous living room. |
 | | In the mid-1700s, Count Rumford (born Benjamin Thompson in Woburn, Massachusetts), the fireplace's creator and namesake, realized that the only useful heat generated by a fireplace is radiant heat, and that in traditional fireplaces, much of this heat mixes with smoke and goes right up the chimney. |
 | | But Rumford's real genius was straightening the fireback and rounding the front wall of the throat, essentially creating a nozzle—like an inverted carburetor—that shoots smoke up through the damper and out the chimney, wasting less heat in the process. |
| thisoldhouse.com /toh/knowhow/interiors/article/0,16417,212539,00.html (538 words) |
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