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Not to be confused with Thermopylae.

A thermopile is an electronic device that converts thermal energy into electrical energy. It is composed of several thermocouples connected usually in series or, less commonly, in parallel.

Thermopiles do not respond to absolute temperature, but generate an output voltage proportional to a local temperature difference or temperature gradient.

Thermopiles are used to provide an output in response to temperature as part of a temperature measuring device, such as the infrared thermometers widely used by medical professionals to measure body temperature. They are also used widely in heat flux sensors (such as the Moll thermopile and Eppley pyrheliometer)[1][2][3] and gas burner safety controls. The output of a thermopile is usually in the range of tens or hundreds of millivolts.[4] As well as increasing the signal level, the device may be used to provide spatial temperature averaging.[5]

Thermopiles are also used to generate electrical energy from, for instance, heat from electrical components.

See also[edit]

  • Seebeck effect—the physical effect responsible for the generation of voltage in a thermopile.
  • Thermoelectric materials—high-performance materials that can be used to construct a compact thermopile that delivers high power.

External links[edit]

References[edit]


Original courtesy of Wikipedia: http://en.wikipedia.org/wiki/Thermopile — Please support Wikipedia.
This page uses Creative Commons Licensed content from Wikipedia. A portion of the proceeds from advertising on Digplanet goes to supporting Wikipedia.
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3 news items

 
DirectionsMag.com
Sun, 24 Aug 2014 18:01:56 -0700

Thermopile: An infrared detector. Often used in pairs in UAVs to measure tilt and pitch by looking at differences in the infrared signature of the horizon fore and aft and on both sides. This is based on the fact that there is always an infrared ...
 
BGR
Wed, 20 Aug 2014 07:21:08 -0700

One of the most successful Kickstarter projects right now is Hema-Imager, which has so far secured $86,000 in support. It's a “wireless thermopile-based imaging device compatible with nearly any smart device” and it features temperature accuracy of 2 ...

Photonik

Photonik
Tue, 26 Aug 2014 04:00:44 -0700

Das Schweizer Startup-Unternehmen liefert seine kompakten, schnellen und hochempfindlichen Sensoren an den US-amerikanischen Hersteller von Photonik-Komponenten. Bildquelle: greenTEG. Sensor auf Basis der Thermopile-Technik. "Die Schweizer ...
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