Gas thermal conductivity measurement using the three-omega method

Gauthier, Sebastian; Giani, Alain; Combette, Philippe

doi:10.1016/j.sna.2012.12.032

Cited by 22 publications

(14 citation statements)

References 24 publications

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“…Silver paste bonding was used to connect the metal wire to the four pads of the micro-sensor. The asymmetric nature of the heat diffusion process on two sides of AITS is similar to that proposed by Moon et al [20] and Gauthier et al [21]: the electricity-driven metal strip within the 3 sensor with width 2b and length L releases heat [22] to both sides unequally. However, the above-mentioned precedents only consider the ideal case for which the boundary mismatch is neglected.…”

Section: Experimental Thermal Characterization Via Aits 21 Measuremesupporting

confidence: 76%

Inhomogeneity in pore size appreciably lowering thermal conductivity for porous thermal insulators

Qiu

Zou

Tang

et al. 2018

Applied Thermal Engineering

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Section: Experimental Thermal Characterization Via Aits 21 Measuremesupporting

confidence: 76%

Inhomogeneity in pore size appreciably lowering thermal conductivity for porous thermal insulators

Qiu

Zou

Tang

et al. 2018

Applied Thermal Engineering

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“…In modified configurations, it has also been applied to the measurement of the thermal conductivity of gases [6,7] and fluids [8,9], also including fluids in flow [9]. For the past decade, the 3 ω method has been investigated with respect to the measurement of flow speeds [10,11], liquid levels [12], and has been used as a sensor for the measurement of cell viability [13].…”

Section: Introductionmentioning

confidence: 99%

The 3-Omega Method for the Measurement of Fouling Thickness, the Liquid Flow Rate, and Surface Contact

Clausen

Pedersen

Bentien

2017

Sensors

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The 3-omega method is conventionally used for the measurement of thermal conductivity in solid samples. The present work includes the experimental characterization and proof-of-concept measurements of sensor concepts, based on the 3-omega method. It is shown that this method can be used to measure fouling layers with a thickness of 10 to 400 µm, to conduct the measurement of flow rates with a high precision, and finally, as a simple on-off contact sensor with a fast response time.

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“…For the case of a solid-liquid interface, the result is an increase of the apparent thermal conductivity (κ s+l ), from the sum of the thermal conductivities of the solid (κ s ) and the liquid (κ l ) 18 . Equation (2) can be generalized to account for an interface of this type 19,20 :…”

Section: Methodsmentioning

confidence: 99%

Sub-μL measurements of the thermal conductivity and heat capacity of liquids

López-Bueno

Bugallo

Leborán

et al. 2018

Phys. Chem. Chem. Phys.

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We present the analysis of the thermal conductivity, κ, and heat capacity, C, of a wide variety of liquids, covering organic molecular solvents, ionic liquids and water-polymer mixtures. These data were obtained from ≈0.6 μL samples, using an experimental development based on the 3ω method, capable of the simultaneous measurement of κ and C. In spite of the different type and strength of interactions, expected in a priori so different systems, the ratio of κ to the sound velocity is approximately constant for all of them. This is the consequence of a similar atomic density for all these liquids, notwithstanding their different molecular structures. This was corroborated experimentally by the observation of a C/V ≈ 1.89 × 10 J K m (≈3R/2 per atom), for all liquids studied in this work. Finally, the very small volume of the sample required in this experimental method is an important advantage for the characterization of systems like nanofluids, in which having a large amount of the dispersed phase is sometimes extremely challenging.

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Gas thermal conductivity measurement using the three-omega method

Cited by 22 publications

References 24 publications

Inhomogeneity in pore size appreciably lowering thermal conductivity for porous thermal insulators

Inhomogeneity in pore size appreciably lowering thermal conductivity for porous thermal insulators

The 3-Omega Method for the Measurement of Fouling Thickness, the Liquid Flow Rate, and Surface Contact

Sub-μL measurements of the thermal conductivity and heat capacity of liquids

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