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The annual fuel utilization efficiency (AFUE; pronounced 'A'-'Few' or 'A'-'F'-'U'-'E') is a thermal efficiency measure of space-heating furnaces and boilers.The AFUE differs from the true 'thermal efficiency' in that it is not a steady-state, peak measure of conversion efficiency, but instead attempts to represent the actual, season-long, average efficiency of that piece of equipment ...
An assortment of energy-efficient semiconductor (LED) lamps for commercial and residential lighting use. LED lamps to use at least 75% less energy, and last 25 times longer, than traditional incandescent light bulbs. [14] Homeowners implementing ECMs in their residential buildings often start with an energy audit. This is a way homeowners look ...
In 2013, Napoleon invented the first 30,000 BTU gas furnace, which was described as the smallest BTU size of any gas furnace sold in the world. [8] Since then, the company has continued developing multiple patented inventions for fireplaces, grills, along with heating and cooling products.
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Originally a charcoal furnace, the old blast furnace at Coalbrookdale was leased in 1709 by Abraham Darby I, who used it to make coke pig iron and created the first long-term business to do so. The furnace remained in use until the 19th century and now forms part of the Ironbridge Gorge Museum Trust's Museum of Iron. IGMT: Madeley Wood or Bedlam
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