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A radiator is a device that transfers heat to a medium primarily through thermal radiation.In practice, the term radiator is often applied to any number of devices in which a fluid circulates through exposed pipes (often with fins or other means of increasing surface area), notwithstanding that such devices tend to transfer heat mainly by convection and might logically be called convectors.
An oil heater, also known as an oil-filled heater, oil-filled radiator, or column heater, is a common form of convection heater used in domestic heating. Although filled with oil , it is electrically heated and does not involve burning any oil fuel ; the oil is used as a heat reservoir (buffer).
The Roman hypocaust is an early example of a type of radiator for building space heating. Franz San Galli, a Prussian-born Russian businessman living in St. Petersburg, is credited with inventing the heating radiator around 1855, [1] [2] having received a radiator patent in 1857, [3] but American Joseph Nason and Scot Rory Gregor developed a primitive radiator in 1841 [4] and received a number ...
In his 3m cubed test room with a 1 x 0.5 m radiator and walls of average U value 0.44 W/m 2 K, he found that for a radiator temperature of 43 °C the heat flux through the wall behind the radiator reduced from 7.1 to 3.1 W/m 2. Note that the average heat loss in the room was not reduced by such a large percentage as only part of the surface of ...
Radiator caps for pressurized automotive cooling systems. Of the two valves, one prevents the creation of a vacuum, the other limits the pressure. It is generally a limitation of most cooling systems that the cooling fluid not be allowed to boil, as the need to handle gas in the flow greatly complicates design.
A speaker enclosure using a passive radiator usually contains an "active loudspeaker" (or main driver), and a passive radiator (also known as a "drone cone"). The active loudspeaker is a normal driver, and the passive radiator is of similar construction, but without a voice coil and magnet assembly .
A seasoned spy trained in the Red Room as a Black Widow and mother-figure to Romanoff and Belova who is now one of the Red Room's lead scientists. [ 24 ] : 4 [ 52 ] [ 53 ] Compared to Vostokoff's comic book counterpart, who becomes the supervillain Iron Maiden , Weisz felt the film's version was more ambiguous and layered, with a deadpan ...
On one occasion, it is implied he is an undercover agent whose target is Homer. [149] At the Adult Education Annex, Lenny teaches a class on "How To Chew Tobacco". [150] In one of Homer's daydreams, it is shown that Lenny is the President of the United States. [151] Lenny and Carl together rank sixth on IGN's Top 25 Simpsons Peripheral ...