Determination of thermal conductivity, thermal diffusivity, and specific heat of liquids using a thermoelectric module
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Other documents of the author: Mendiola Curto, Víctor; Beltrán-Pitarch, Braulio; García-Cañadas, Jorge
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comunitat-uji-handle2:10234/7034
comunitat-uji-handle3:10234/8619
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Title
Determination of thermal conductivity, thermal diffusivity, and specific heat of liquids using a thermoelectric moduleDate
2024Publisher
IOP PublishingBibliographic citation
Víctor Mendiola-Curto et al 2024 Meas. Sci. Technol. 35 045907Type
info:eu-repo/semantics/articlePublisher version
https://iopscience.iop.org/article/10.1088/1361-6501/ad1dacVersion
info:eu-repo/semantics/publishedVersionSubject
Abstract
Managing heat through working fluids is essential in many applications, as well as the
development of new fluids with improved properties. Therefore, the characterization of their
thermal properties, which is usually ... [+]
Managing heat through working fluids is essential in many applications, as well as the
development of new fluids with improved properties. Therefore, the characterization of their
thermal properties, which is usually a laborious task, is necessary to design and model new
thermal systems. In this study, we show the proof of concept of a new method capable of
determining the thermal conductivity, thermal diffusivity, and specific heat capacity of liquids
from a single simple measurement, provided their density is known (a property easy to
measure). The method is based on the use of a thermoelectric module, which is soldered to a
large copper block at one side (heat sink). At the other side, the liquid is added on top of the
ceramic external layer of the module. By means of impedance spectroscopy measurements, it is
demonstrated for three liquids (water, Luzar, and diethylene glycol) that their thermal properties
of can be obtained. In order to do this, a new equivalent circuit was developed to account for the
new boundary conditions of the measuring setup. Random and systematic errors were calculated
and combined to obtain a total uncertainty <8.6% for the thermal conductivity, <6.3% for the
thermal diffusivity, and <6.1% for the specific heat capacity. The reasonably low uncertainties
obtained position the new method as a low-cost alternative able to provide the three key thermal
properties of liquids from one single measurement and only using a single setup. [-]
Is part of
Measurement Science and Technology, 35 (2024)Funder Name
European Commission | European Union’s Horizon 2020
Investigation project
info:eu-repo/grantAgreement/EC/H2020/863222Rights
info:eu-repo/semantics/openAccess
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Except where otherwise noted, this item's license is described as © 2024 The Author(s). Published by IOP Publishing Ltd. Original content from this work may be used under the terms
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