A simplified model for thermal-wave cavity self-consistent measurement of thermal diffusivity

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DOIResolve DOI: http://doi.org/10.1063/1.4846255
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TypeArticle
Journal titleReview of Scientific Instruments
ISSN0034-6748
Volume84
Issue12
Article number124902
SubjectAbsolute measurements; Distilled water; Liquid sample; Theoretical modeling; Thermal parameters; Thermal-wave cavity; Equipment; Instruments; Thermal diffusivity
AbstractA simplified theoretical model was developed for the thermal-wave cavity (TWC) technique in this study. This model takes thermal radiation into account and can be employed for absolute measurements of the thermal diffusivity of gas and liquid samples without any knowledge of geometrical and thermal parameters of the components of the TWC. Using this model and cavity-length scans, thermal diffusivities of air and distilled water were accurately and precisely measured as (2.191 ± 0.004) × 10-5 and (1.427 ± 0.009) × 10-7 m2 s-1, respectively, in very good agreement with accepted literature values. © 2013 Crown.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada (NRC-CNRC); Energy, Mining and Environment (EME-EME)
Peer reviewedYes
NPARC number21270899
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Record identifier8cb6a9b9-2212-411b-bb5c-a2ac6c8a6667
Record created2014-02-18
Record modified2016-05-09
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