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Box connectors join conduit to a junction box or other electrical box. A typical box connector is inserted into a knockout in a junction box, with the threaded end then being secured with a ring (called a lock nut ) from within the box, as a bolt would be secured by a nut.
DOAS air handling unit with heat recovery wheel and passive dehumidification. A dedicated outdoor air system (DOAS) is a type of heating, ventilation and air-conditioning system that consists of two parallel systems: a dedicated system for delivering outdoor air ventilation that handles both the latent and sensible loads of conditioning the ventilation air, and a parallel system to handle the ...
Diagramatic operation of a thermal wheel Ljungström Air Preheater by Swedish engineer Fredrik Ljungström (1875–1964). A thermal wheel, also known as a rotary heat exchanger, or rotary air-to-air enthalpy wheel, energy recovery wheel, or heat recovery wheel, is a type of energy recovery heat exchanger positioned within the supply and exhaust air streams of air-handling units or rooftop ...
An untrue rumor that litter boxes are being placed in schools for students who dress up in furry costumes and identify as cats has made its way to two North Carolina school districts — despite ...
One homeowner has recently discovered he no longer owns his 8,300-square-foot home — at least on paper. Craig Adams, a local dentist in Raleigh, North Carolina, said the deed to his $4 million ...
Kerrville Municipal Airport covers 528 acres (214 ha) at an elevation of 1,617 feet (493 m). It has two asphalt runways: 12/30 is 6,004 by 100 feet (1,830 x 30 m) and 3/21 is 3,597 by 58 feet (1,096 x 18 m).
A grille is a perforated cover for an air duct (used for heating, cooling, or ventilation, or a combination thereof). Grilles sometimes have louvers which allow the flow of air to be directed. A register differs from a grille in that a damper is included.
[1] [2] It was used from the 1860s through the 1970s, when it was replaced by PVC pipe for water supply and ABS pipe for drain-waste-vent (DWV) applications. The name comes from Orangeburg, New York, the town in which most Orangeburg pipe was manufactured, largely by the Fiber Conduit Company. It changed its name to the Orangeburg Manufacturing ...