| Zugriffsnummer | 10698 |
| Dokumenttyp | Konferenzartikel in Zeitschrift |
| Sprache | Englisch |
| Titel | A quasi steady-state technique to measure the thermal conductivity |
| Autor(in); Institution |
Hammerschmidt, Ulf; 3.102, Instationäre Verfahren zur Wärmeleitungsmessung, PTB-Braunschweig
|
| Quelle/Jahr | Proceedings of the Sixteenth European Conference on Thermophysical Properties. International Journal of Thermophysics: 24 (2003), 5, 1291 - 1312 |
| ISSN | 0195-928X |
| Verlag | New York, NY: Kluwer Acad./Plenum Publ. |
| Konferenzangaben | 16. European Conference on Thermophysical Properties, London, 01-04, September, 2002, UK |
| Zusammenfassung | A new method is developed for the measurement of thermal conductivity. It combines characteristic advantages of steady-state and transient techniques but avoids major drawbacks of both these classes of methods. On the basis of a simple transient hot-wire (THW) or transient hot-strip (THS) arrangement, a direct indicating thermal-conductivity meter is realized by adding only one temperature sensor. After a short settling time during which all transients die out, the instrument operates under quasi-steady state conditions. No guard heaters are required because outer boundaries are free to change with time. The instrument's uncertainty is provisionally estimated to be 3 %. |
