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Investigation into the use of thermoelectric modules as an alternative to conventional fluxmeters: application to convective and radiative heat flux in buildings

Abstract : The present work aims to propose the use of Peltier modules for the superficial heat flux measurement, as an alternative to conventional heat flux sensors. In this study, the function of Peltier modules (TEM) as heat flux sensors is compared to the Captec® heat flux sensors (FGT), based on the premise that conventional heat flux sensors such as Captec® have been proven to have acceptable performance for the heat flux measurement, i.e., conduction, convection and radiation. A simple measurement device and a simple general formulation for decoupling the convective and radiative parts from the heat flux measurement are proposed. The latter are implemented in an experimental case presenting weak convective and radiative heat fluxes, using a black-shiny couple of Peltier modules and a black-shiny couple of Captec. The radiative part was found to be the same when comparing FGT and TEM measurements. However, the convective part when using TEM measurements was found to be around two times larger than when using FGT measurement. It has been encountered that this difference is better explained by the geometrical and thermal properties of both sensors.
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https://hal.inria.fr/hal-03145206
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Submitted on : Thursday, February 18, 2021 - 10:57:08 AM
Last modification on : Friday, January 21, 2022 - 3:09:11 AM
Long-term archiving on: : Wednesday, May 19, 2021 - 6:37:39 PM

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Miguel Austin, Tingting Vogt Wu, Alain Sempey, Alain Sommier, Jean Dumoulin, et al.. Investigation into the use of thermoelectric modules as an alternative to conventional fluxmeters: application to convective and radiative heat flux in buildings. International Journal of Thermal Sciences, Elsevier, 2021, 160, pp.1-13. ⟨10.1016/j.ijthermalsci.2020.106653⟩. ⟨hal-03145206⟩

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