Determination of thermal conductivity, thermal diffusivity, and specific heat of liquids using a thermoelectric module
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Otros documentos de la autoría: 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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Determination of thermal conductivity, thermal diffusivity, and specific heat of liquids using a thermoelectric moduleFecha de publicación
2024Editor
IOP PublishingCita bibliográfica
Víctor Mendiola-Curto et al 2024 Meas. Sci. Technol. 35 045907Tipo de documento
info:eu-repo/semantics/articleVersión de la editorial
https://iopscience.iop.org/article/10.1088/1361-6501/ad1dacVersión
info:eu-repo/semantics/publishedVersionPalabras clave / Materias
Resumen
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. [-]
Publicado en
Measurement Science and Technology, 35 (2024)Entidad financiadora
European Commission | European Union’s Horizon 2020
Proyecto de investigación
info:eu-repo/grantAgreement/EC/H2020/863222Derechos de acceso
info:eu-repo/semantics/openAccess
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