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The appliance efficiency of a gas-fired balanced flue local space heater in pilot light mode is almost equal with the appliance efficiency measured at the reduced power of the appliance, which efficiency is between 65–95% based on the low calorific value of the consumed gas, making part of the pilot light's energy consumption into useful heat.
In architecture, a transom is a transverse horizontal structural beam or bar, or a crosspiece separating a door from a window above it. This contrasts with a mullion, a vertical structural member. [1] Transom or transom window is also the customary U.S. word used for a transom light, the window over this crosspiece.
The human eye's response to light is non-linear: halving the light level does not halve the perceived brightness of a space, it makes it look only slightly dimmer. [3] [4] If light is redistributed from the brightest parts of a room to the dimmest, the room therefore appears brighter overall, and more space can be given a useful and comfortable level of illumination (see before and after ...
Fanlight at Montgomery's Inn in Toronto, Canada Hotel in Ariah Park, New South Wales, with its name in the fanlight. A fanlight is a form of lunette window, often semicircular or semi-elliptical in shape, with glazing bars or tracery sets radiating out like an open fan. [1]
The traction motors were six-pole field, 400 volts, 25 Hz rated each at 385 hp (287 kW). The motors were frame-mounted using quill drives to the sprung driving wheels, providing a flexible suspension system across a relatively-long locomotive frame, which allowed full wheel weight to rest on the rail for good traction regardless of track condition.