Humidity impact on thermal conductivity sensors

Abstract: The thermal conductivity of humid air at different saturation levels has been investigated at 70 °C. A MEMS-based thermal conductivity sensor was calibrated and used to measure the thermal conductivity of humid air. The obtained results were compared to different equations for calculating the thermal conductivity of gas mixtures, in this case, dry air and water vapor. The selected equations predict contradicting behaviors of humid air at different temperatures and saturation levels. A semi-empirical equation by Melling et al. for the temperature range of 100 °C to 200 °C has shown the best agreement with the experimental data. We intend to study the temperature range from 0 to 100 °C in more detail and plan to adapt the interpolation to fit this temperature range

Location
Deutsche Nationalbibliothek Frankfurt am Main
Extent
Online-Ressource
Language
Englisch
Notes
Proceedings. MDPI AG. - 97, 1 (2027) , 93, ISSN: 2504-3900

Event
Veröffentlichung
(where)
Freiburg
(who)
Universität
(when)
2024
Creator
Emperhoff, Sophie
Eberl, Matthias
Dwertmann, Tim
Wöllenstein, Jürgen

DOI
10.3390/proceedings2024097093
URN
urn:nbn:de:bsz:25-freidok-2463326
Rights
Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
Last update
14.08.2025, 10:51 AM CEST

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Associated

Time of origin

  • 2024

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