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Title:Thermal Effusivity Investigations of Solid Thermoelectrics Using the Front Photopyroelectric Detection
Authors:ID Tripon, Carmen, National Institute for R&D of Isotopic and Molecular Technologies, 67‑103 Donat Str., Cluj‑Napoca, Romania (Author)
ID Dadarlat, Dorin, National Institute for R&D of Isotopic and Molecular Technologies, 67‑103 Donat Str., Cluj‑Napoca, Romania (Author)
ID Kovacs, Katalin, National Institute for R&D of Isotopic and Molecular Technologies, 67‑103 Donat Str., Cluj‑Napoca, Romania (Author)
ID Tosa, Victor Petru, Faculty of Material Science and Environmental Engineering, Technical University of Cluj-Napoca, Cluj‑Napoca, Romania (Author)
ID Franko, Mladen, Laboratory for Environmental and Life Sciences, University of Nova Gorica (Author)
Files: This document has no files that are freely available to the public. This document may have a physical copy in the library of the organization, check the status via COBISS. Link is opened in a new window
Language:English
Work type:Not categorized
Typology:1.01 - Original Scientific Article
Organization:UNG - University of Nova Gorica
Abstract:The front photopyroelectric configuration (FPPE), making use of air as a coupling fluid between the sample and sensor, was applied to measure the thermal effusivity of some solid thermoelectric materials. The investigated samples were ZnO, CuCrO2, Cu4Sn7S16, TiS3 and two samples of high manganese silicide (HMS) thermoelectric materials. Most of these materials are porous and consequently, the classical PPE method, making use of standard coupling fluids between sensor and sample, cannot be used due to the fact that the coupling fluid penetrates inside the sample and leads to incorrect results. With this work we extend (to thermoelectric solids) the area of application of a method, recently proposed by Salazar et al. (Measurement 121: 96, 2018). Experimentally, the thermal effusivity is obtained from a multi-parametric fit of the phase of the FPPE signal as a function of the modulation frequency (with sample’s thermal effusivity, thickness of the sensor-sample air gap and heat losses by convection and radiation, as fitting parameters). It was demonstrated that, in some particular cases, the three parameters are independent and consequently, the solution of the fit is unique. Where possible, the obtained results have been compared with data from the literature and good agreement was found.
Keywords:Front photopyroelectric configuration (FPPE), Solid thermoelectrics, Thermal effusivity
Publication version:Version of Record
Year of publishing:2020
Number of pages:11
Numbering:41
PID:20.500.12556/RUNG-5197-d786c7de-fd0b-21ac-6b58-5e7f0d1caf41 New window
COBISS.SI-ID:13402371 New window
DOI:https://doi.org/10.1007/s10765-019-2593-2 New window
NUK URN:URN:SI:UNG:REP:MHZEBZHY
Publication date in RUNG:02.05.2020
Views:2900
Downloads:0
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Record is a part of a proceedings

Title:20 International conference on photoacoustic and photothermal phenomena

Record is a part of a journal

Title:International Journal of Thermophysics
Shortened title:Int. J. Thermophys.
Publisher:Springer
Year of publishing:2020

Licences

License:CC BY-NC-ND 4.0, Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
Link:http://creativecommons.org/licenses/by-nc-nd/4.0/
Description:The most restrictive Creative Commons license. This only allows people to download and share the work for no commercial gain and for no other purposes.
Licensing start date:01.05.2020

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