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Not to be confused with Thermopylae.
Thermopile, composed of multiple thermocouples in series. If both the right and left junctions are the same temperature, voltages cancel out to zero. However if one side is heated and other side cooled, resulting total output voltage is equal to the sum of junction voltage differentials.

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, solar wind, radioactive materials, or combustion. The process is also an example of the Peltier Effect (electric current transferring heat energy) as the process transfers heat from the hot to the cold junctions.

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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282 news items

 
AZoSensors
Thu, 18 Jun 2015 05:45:00 -0700

Dexter's S60M TO-18 is a single-channel silicon-based thermopile that delivers high output. It features a small active area with dimensions of 0.6mm x 0.6mm in a small TO-18 package. The silicon-based thermopile provides a rapid 18ms time constant in ...

ACTmedia

ACTmedia
Mon, 29 Jun 2015 23:31:49 -0700

'The deterioration of this scenario depends on how Greece treats the relation with Europe: Spartan individualism such as Leonidas' in Thermopile or the wisedom of Temistocle in Salamina. History shows that the latter's approach saved Greece at that ...
 
AltEnergyMag (press release)
Mon, 29 Jun 2015 06:30:00 -0700

When measuring solar irradiance professionally, high measurement accuracy and high data availability are key. Traditional high-end pyranometers, ventilated or not, do not offer both, due to dew and frost. Now Hukseflux has introduced SR25, the ISO 9060 ...

AZoOptics.com (press release)

AZoOptics.com (press release)
Wed, 17 Jun 2015 03:39:04 -0700

For all processes carried out with a laser system, the laser power is the core parameter that needs to be monitored and controlled. With our gRAY detectors, we provide laser power detectors suited for OEM applications. They are thermopile-based ...

AZoSensors

AZoSensors
Thu, 11 Jun 2015 07:37:30 -0700

Infrared thermometers employ a lens to focus infrared light from an object onto a detector known as a thermopile. The function of the thermopile is to absorb infrared radiation and convert it to heat. The thermopile gets hotter as it absorbs more and ...
 
CNNMoney
Wed, 03 Jun 2015 07:03:45 -0700

Both SensorTags come with 10 integrated low-power sensors including the TI OPT3001 precision ambient light sensor, TI HDC1000 integrated humidity and temperature sensor and TI TMP007 contactless IR thermopile sensor. Additional sensors include a ...

AZoSensors

AZoSensors
Fri, 24 Apr 2015 07:46:04 -0700

Kipp & Zonen had been involved in the manufacture of a fast and sensitive thermopile used for the measurement of light and thermal radiation since 1913. The design, which was made up of several thermocouples, was by Dr. Moll of Utrecht University.

AZoSensors

AZoSensors
Thu, 12 Mar 2015 07:36:29 -0700

A thermopile detector is a passive radiation sensing voltage-generating device. It does not emit any radiation and require cooling or bias. Dexter Research Center (DRC) provides stable, high output radiation sensing thermopile detectors covering linear ...
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