| Zugriffsnummer | 27755 |
| Dokumenttyp | Zeitschriftenartikel |
| Sprache | Englisch |
| Titel | Analysis of thermal-conductivity measurement data from international comparison of national laboratories |
| Autor(in); Institution |
Hay, B.; Scientific and Industrial Metrology Centre, Laboratoire National de Métrologie et d'Essais, Paris, FRANCE
Zarr, R.; National Institute of Standards and Technology (NIST), Engineering Laboratory, Gaithersburg, MD, USA
Stacey, C.; National Physical Laboratory (NPL), Thermal Performance Group, Teddington, UK
Lira-Cortes, L.; Cwentro Nacional de Metrologia, Area Electrica, Division de Termometria, Queretaro, MEXICO
Hammerschmidt, Ulf; 1, Mechanik und Akustik, PTB-Braunschweig
Sokolov, N.; D. I. Mendeleyev Institute for Metrology, St. Petersburg, RUSSIA
Zhang, J.; National Institute of Metrology, Heat Division, Beijing, CHINA
Filz, J.-R.; Scientific and Industrial Metrology Centre, Laboratoire National de Métrologie et d'Essais, Paris, FRANCE
Fleurence, N.; Scientific and Industrial Metrology Centre, Laboratoire National de Métrologie et d'Essais, Paris, FRANCE
|
| Quelle/Jahr | International Journal of Thermophysics: 34 (2013), 5, 737 - 762 |
| ISSN | 0195-928X (PRINT) ; 1572-9567 (ONLINE) |
| DOI | |
| Verlag | Dordrecht: Springer |
| Freie Schlagworte | Guarded hot plate ; Insulating materials ; Interlaboratory comparison ; Thermal conductivity |
| Zusammenfassung | For the first time under the auspices of the Bureau International des Poids et Mesures (BIPM), seven national metrology institutes (NMIs) participated in an international interlaboratory comparison on thermal-conductivity measurements by the guarded hot-plate method. Measurements were conducted successively by all participants on the same set of specimens of insulating materials (mineral wool and expanded polystyrene) at temperatures ranging from 10 °C to 40 °C, according to the International Standard ISO 8302. This protocol aims to minimize issues of material variability by circulating the same pairs of specimens among the laboratories following the strict format of a round-robin test program. This comparison is a pilot study which is intended as a first stage for future key comparisons between NMIs. The descriptive analysis of obtained results shows good agreement between laboratories for the mineral wool (MW) specimens and the thicker specimens of expanded polystyrene (EPS), with relative deviations within the uncertainties of measurement. A positive drift of thermal-conductivity values, which has appeared progressively during the comparison process, seems to be correlated with the size of the metering area of the guarded hot plates used. A statistical analysis was applied to repeated thermal-conductivity measurements at 23 °C, to identify anomalous and outlying data, to assess the within- and between-laboratory variability, and to evaluate the participant laboratories' performance. |
Zitierung
Hay, B., Zarr, R., Stacey, C., Lira-Cortes, L., Hammerschmidt, U., Sokolov, N., Zhang, J., Filz, J.-R., & Fleurence, N. (2013). Analysis of thermal-conductivity measurement data from international comparison of national laboratories. International Journal of Thermophysics, 34(5), 737–762. https://doi.org/10.1007/s10765-012-1225-x