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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.
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34 news items

 
Design News
Fri, 18 Apr 2014 03:02:13 -0700

Gadget Freak Case #253: Peltier Thermopile Cloud Sensor. Eric Chesak created a sensor that can detect clouds, and it can also measure different sources of radiation. NO RATINGS. Login to Rate. 4/18/2014 | Post a comment. Comment | Print | RSS ...
 
Solar Plaza (press release)
Tue, 15 Apr 2014 05:50:52 -0700

The SR20-D1 digital pyranometer employs a state-of-the-art thermopile sensor with black coated surface, two domes and an anodised aluminium body. The connector, desiccant holder and sun screen fixation are very robust and designed for long term ...
 
Azom.com
Mon, 07 Apr 2014 03:22:45 -0700

They include a wide choice of broadband and filtered Si and Ge probes and thermopile and pyroelectric detectors for sensitive detection from 200 nm to 20µm. Analog output facilitates data storage and analysis by means of dedicated or PC based data ...
 
EDN.com
Tue, 01 Apr 2014 16:51:14 -0700

High resolution bolometer-based cameras are widely used for exterior night vision applications. The recent introduction of cost-effective lower resolution thermopile-based far infrared (FIR) cameras is extending the potential application range greatly ...

Sunday Leader

Sunday Leader
Sat, 05 Apr 2014 12:30:00 -0700

The UN building was formerly a slaughter house for animals and stands along the East River, a block, 39 storeys high, breadth greater than a city block fronting a curtain wall of blue-green Thermopile glass. Even architect, Frank Lloyd Fright called ...
 
AZoOptics.com (press release)
Mon, 07 Apr 2014 03:41:15 -0700

Examples of Y include current or counts from a photomultiplier or voltage from a thermopile. Y usually has a value Y0 (dark signal) for X = 0. In this case: X can be any radiative input. The units if X are normally watts or lumens. Where the irradiance ...
 
AZoOptics.com (press release)
Fri, 28 Mar 2014 07:41:43 -0700

The collimated beam was then traversed a 90% reflective beamsplitter, where most of the beam was directed towards a high-power thermopile (Figures 3 and 4). The remainder of the beam traversed a 100mm focal length lens, which formed a region far from ...

Le Journal du Geek

Le Journal du Geek
Thu, 17 Apr 2014 01:57:51 -0700

Comme vous vous en doutez, ce processus de conversion de la chaleur en électricité baptisé thermopile pourrait également répondre aux nouvelles exigences en matière de respect de l'environnement. Il ne nous reste donc plus qu'à faire preuve de ...
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