An optimal guarding scheme for thermal conductivity measurement using a guarded cut-bar technique, part 2 guarding mechanism

Xing, Changhu; Jensen, Colby; Folsom, Charles P.; Ban, Heng; Marshall, Douglas W.

doi:10.1016/j.applthermaleng.2013.06.021

Cited by 9 publications

(5 citation statements)

References 14 publications

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“…Among steady state methods, some authors [5,25] stated that the guarded hot plate (GHP) is considered as the most accurate and precise technique for low thermal conductivity materials. The guarded technique is widely applied and uses different hot elements, such as bar, cut-bar [26], cartridge, plate [27] as heat source. However the radial method which is a somehow close to the GHP can yield accurate measurement within ±4% and could reach ±2% with good handling [28].…”

Section: Experimental Methodsmentioning

confidence: 99%

Thermal conductivity measurement of thermochemical storage materials

Fopah-Lele

N’Tsoukpoe

Osterland

et al. 2015

Applied Thermal Engineering

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Section: Experimental Methodsmentioning

confidence: 99%

Thermal conductivity measurement of thermochemical storage materials

Fopah-Lele

N’Tsoukpoe

Osterland

et al. 2015

Applied Thermal Engineering

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“…However, this method requires a long measurement time and a stringent test environment, and the error mainly come from uneven heat transfer at the interface, contact thermal resistance, and radial heat ow loss. 60,67,68 In order to ensure the one-dimensional axial steadystate heat ow, it is necessary to use suitable insulating materials or shield heaters to reduce the radial heat ow loss or compensate heat loss. An appropriate clamping pressure to make the specimen and the meter bar in good contact to ensure uniform heat transfer at the interface.…”

Section: Measurement Methods For the Effective Thermal Conductivity O...mentioning

confidence: 99%

Measurement and the improvement of effective thermal conductivity for a metal hydride bed – a review

Zhang

et al. 2022

RSC Adv.

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“…2). Detailed description of the system and thermal conductivity measurements of unknown samples are described elsewhere [12][13][14][15]. This paper presents only an introduction of the system and results of the EMF measurement side.…”

Section: Measurement Principle and Systemmentioning

confidence: 99%

“…Another advantage for the EMF measurement adopted in this research is the integrated measurements with thermal conductivity. An advanced comparative axial heat flow technique for thermal conductivity measurement has been developed in this laboratory [12][13][14][15]. With the available system, the thermal EMF can be measured directly without incurring any additional cost and equipment.…”

Section: Introductionmentioning

confidence: 99%

A thermal conductivity and electromotive force measurement system for nuclear fuels and materials

et al. 2016

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The development of advanced nuclear fuels requires a better understanding of their transmutation and microstructural evolution. Alloy fuels have the advantage of high thermal conductivity and improved characteristics in fuel-cladding chemical reaction. However, information on thermodynamic and thermophysical properties is limited. The objective of this research is to develop an experimental system, integrated with the thermal conductivity measurement by the comparative cut-bar technique to measure the thermodynamic properties of solid materials, from which an understanding of their phase change(s) can be determined. With the coupled system, thermal conductivity and electromotive force (EMF) can both be measured. In order to calibrate and test the system, the apparatus was employed to measure the EMF of several materials. As an initial calibration test, the EMF of Chromel was measured from 100 °C to 800 °C and compared with theoretical values. The subsequent material structure determination process was performed by EMF measurement of pure iron, iron-nickel alloy and ANSI 1018 carbon steel rods. The measured phase transition temperatures were compared with the corresponding alloy equilibrium phase diagrams. The results indicate that the system is able to determine material phase change based on EMF measurement. In the future, this prototype system is to be eventually modified and used in a hot-cell on irradiated samples.

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An optimal guarding scheme for thermal conductivity measurement using a guarded cut-bar technique, part 2 guarding mechanism

Cited by 9 publications

References 14 publications

Thermal conductivity measurement of thermochemical storage materials

Thermal conductivity measurement of thermochemical storage materials

Measurement and the improvement of effective thermal conductivity for a metal hydride bed – a review

A thermal conductivity and electromotive force measurement system for nuclear fuels and materials

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