[논문]Measurement of thermal conductivity and thermal diffusivity using a thermoelectric module

Beltr？n-Pitarch, Braulio; M？rquez-Garc？a, Lourdes; Min, Gao; Garc？a-Ca？adas, Jorge

doi:10.1088/0957-0233/28/4/045902

Measurement of thermal conductivity and thermal diffusivity using a thermoelectric module

Measurement science & technology, v.28 no.4, 2017년, pp.045902 -

Beltr？n-Pitarch, Braulio (Department of Industrial Systems Engineering and Design, Universitat Jaume I, Campus del Riu Sec, 12071 Castell？n, Spain) , M？rquez-Garc？a, Lourdes (Cardiff School of Engineering, Cardiff University, The Parade, Cardiff CF24 3AA, United Kingdom) , Min, Gao (Cardiff School of Engineering, Cardiff University, The Parade, Cardiff CF24 3AA, United Kingdom) , Garc？a-Ca？adas, Jorge (Department of Industrial Systems Engineering and Design, Universitat Jaume I, Campus del Riu Sec, 12071 Castell？n, Spain)

Abstract ▼ AI-Helper

A proof of concept of using a thermoelectric module to measure both thermal conductivity and thermal diffusivity of bulk disc samples at room temperature is demonstrated. The method involves the calculation of the integral area from an impedance spectrum, which empirically correlates with the thermal properties of the sample through an exponential relationship. This relationship was obtained employing different reference materials. The impedance spectroscopy measurements are performed in a very simple setup, comprising a thermoelectric module, which is soldered at its bottom side to a Cu block (heat sink) and thermally connected with the sample at its top side employing thermal grease. Random and systematic errors of the method were calculated for the thermal conductivity (18.6% and 10.9%, respectively) and thermal diffusivity (14.2% and 14.7%, respectively) employing a BCR724 standard reference material. Although errors are somewhat high, the technique could be useful for screening purposes or high-throughput measurements at its current state. This new method establishes a new application for thermoelectric modules as thermal properties sensors. It involves the use of a very simple setup in conjunction with a frequency response analyzer, which provides a low cost alternative to most of currently available apparatus in the market. In addition, impedance analyzers are reliable and widely spread equipment, which facilities the sometimes difficult access to thermal conductivity facilities.

참고문헌 (9)

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Measurement of thermal conductivity and thermal diffusivity using a thermoelectric module

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