| Zugriffsnummer | 21872 |
| Dokumenttyp | Konferenzartikel |
| Sprache | Englisch |
| Titel | Cellular metals used in flame arrester design |
| Autor(in); Institution |
Mecke, Stefan; 3.5, Zünddurchschlagsprozesse, PTB-Braunschweig
Markus, Detlef; 3.5, Zünddurchschlagsprozesse, PTB-Braunschweig
Hornig, Julia; 3.5, Zünddurchschlagsprozesse, PTB-Braunschweig
Förster, Hans; 3.4, Grundlagen des Explosionsschutzes, PTB-Braunschweig
Klausmeyer, Uwe; 3.5, Zünddurchschlagsprozesse, PTB-Braunschweig
Engelmann, Frank; KEK GmbH, Bad Schmiedeberg, GERMANY
Hilliger, André; KEK GmbH, Bad Schmiedeberg, GERMANY
|
| Quelle/Jahr | Cellular metals for structural and functional applications : CELLMET 2008 ; Proceedings of the International Symposium on Cellular Metals for Structural and Functional Applications, held October 8-10, 2008, in Dresden, Germany:(2009), 101 - 106 |
| Herausgeber(in) |
Stephani, Günter; Fraunhofer Institut für Fertigungstechnik und Angewandte Materialforschung, Dresden, GERMANY
Kieback, Bernd; Fraunhofer Institut für Fertigungstechnik und Angewandte Materialforschung, Dresden, GERMANY
|
| Verlag | Dresden: Fraunhofer IFAM |
| Konferenzangaben | International Symposium on Cellular Materials for Structural and Functional Applications, Dresden, 8-10, October, 2008, Germany |
| Freie Schlagworte | Flammensperre ; Explosion ; Poröse Materialien |
| Zusammenfassung | End-of-line flame arresters are used to protect the inner part of an apparatus or a fuel tank from an external explosion. Sometimes a flow of a flammable vapour/air mixture through the flame arrester, being present for a longer period of time, can not be excluded in all cases. If so, it is necessary to use an endurance burning flame arrester which has to avoid a flame transmission to the inner side of the tank safely. The immense heat produced by the flame which is burning on the surface of the porous medium reduces the quenching property of the flame arrester element. Therefore the heat exchange with the cooling gas flow as well as the effective radial heat conduction from the porous structure to the surroundings has to be optimized to ensure sufficient cooling. To examine the behaviour of different cellular metals the temperature distribution inside flame arrester elements made of sintered fibres as well as of crimped ribbon structures was determined. The experiment is based on the endurance burning test concerning DIN EN 12874 with several thermocouples recording the temperature development at different locations of the flame arrester element. By means of the temporal and local temperature distribution conclusions concerning the ratio of axial to radial effective heat conduction can be drawn for different cellular metals. Because of this ratio is high for sintered fibre structures compared to other porous materials, especially to the traditionally used crimped ribbon elements, the fibre structures seems to be a very good material for the design of endurance burning flame arrester elements. |
Zitierung
Mecke, S., Markus, D., Hornig, J., Förster, H., Klausmeyer, U., Engelmann, F., & Hilliger, A. (2009). Cellular metals used in flame arrester design. International Symposium on Cellular Materials for Structural and Functional Applications, Dresden, 8-10, October, 2008, Germany.