< back to main site


Design guideline for new generation of high-temperature guarded hot-plate

Wu, J; Hameury, J; Failleau, G; Blahut, A; Vachova, T; Strnad, R; Krause, M; Rafeld, E; Hammerschmidt, U (2018) Design guideline for new generation of high-temperature guarded hot-plate. International Journal of Thermophysics, 39 (2). 23

Full text not available from this repository.


This paper complements the existing measurement standards and literature for High-Temperature Guarded Hot-Plates (HTGHPs) by addressing specific issues relating to thermal conductivity measurements of technical insulation at high temperatures, with examples focusing on the designs for measuring thin insulation. The sensitivity studies include the effect of temperature measurements, plate flatness and centre-guard gap design and imbalance. A new configuration of centre-guard gap with triangular shape cross-section has been optimised to obtain the same thermal resistance across the gap as the 2-mm wide gap with rectangular shape cross-section that has been used in the HTGPHs at NPL and LNE. Recommendations haven been made on the selections of heater plate materials, high-temperature high-emissivity coatings and miniature temperature sensors. For the first time, thermal stress analysis method has been applied to the field of HTGHPs, in order to estimate the effect of differential thermal expansion on the flatness of thin rigid specimens.

Item Type: Article
Keywords: High-Temperature Guarded Hot-Plate Technical Insulation Thermal Conductivity High-Temperature High-Emissivity Coating Differential Thermal Expansion Sensitivity Study
Subjects: Advanced Materials > Thermal Performance
Divisions: Engineering, Materials & Electrical Science
Identification number/DOI: 10.1007/s10765-017-2344-1
Last Modified: 19 Apr 2018 12:42
URI: http://eprintspublications.npl.co.uk/id/eprint/7856

Actions (login required)

View Item View Item