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There is a likelihood that underfloor heating may add to offgassing and sick building syndrome in an environment, particularly when the carpet is used as flooring. [citation needed] Electric underfloor heating systems cause low frequency magnetic fields (in the 50–60 Hz range), old 1-wire systems much more so than modern 2-wire systems.
UFAD systems use an underfloor supply plenum located between the structural concrete slab and a raised floor system to supply conditioned air to supply outlets (usually floor diffusers), located at or near floor level within the occupied space. Air returns from the room at ceiling level or the maximum allowable height above the occupied zone.
Most modern electric heating devices use nichrome wire as the active element; the heating element, depicted on the right, uses nichrome wire supported by ceramic insulators. Alternatively, a heat pump can achieve around 150% – 600% efficiency for heating, or COP 1.5 - 6.0 Coefficient of performance , because it uses electric power only for ...
The overhead wire system used to send electricity to an electric locomotive or multiple unit, tram or light rail vehicle [41] Centerbeam A bulkhead flatcar with a braced beam bisecting its length, used to transport lumber products Challenger type The Challenger wheel arrangement A steam locomotive with a 4-6-6-4 wheel arrangement. [42] [43] [44 ...
Samuel Joseph Wurzelbacher (/ ˈ w ɜːr z əl b ɑː k ər / WUR-zəl-bah-kər; December 3, 1973 – August 27, 2023), commonly known as "Joe the Plumber", was an American conservative activist and commentator.
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