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Gas Flow in Hot Porous Materials: The Solar Air Receiver and Spin-Off Applications

Fend, Thomas und Hoffschmidt, Bernhard und Reutter, Oliver und Sauerhering, Joerg und Pitz-Paal, Robert (2006) Gas Flow in Hot Porous Materials: The Solar Air Receiver and Spin-Off Applications. In: Proceedings (ICNMM2). 4th International Conference on Nanochannels, Microchannels and Minichannels, 2006-06-19 - 2006-06-21, Limerick, Ireland.

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Kurzfassung

This article presents an overview on research results from various projects, which deal with one common problem: gas flow in hot porous materials. First, the solar air receiver, which converts concentrated solar radiation into heat in an air circuit, is described as far as the basic principle and the materials employed are concerned. Then, results from experiments in concentrated solar radiation are presented. Materials employed in these applications are extruded ceramic materials as well as metal and ceramic foams with pore sizes on the milli- and micrometer scale. As it turned out, the material properties significantly influence the efficiency of the solar air receiver. It is shown, that under specific conditions flow instability occurs, which may lead to a thermal overload of the material. Measures to avoid these overloads are proposed. Two approaches how to predict gas flow theoretically are reported. Additionally, it is shown, how material quantities such as pressure drop characteristics influence the flow behaviour and the temperature distribution inside the material. Finally, before a conclusion is given, two further applications, which have been dealt with because similar phenomena occur, are reported: an advanced cross flow particle filter and a gas turbine cooling system.

Dokumentart:Konferenzbeitrag (Vortrag, Paper)
Titel:Gas Flow in Hot Porous Materials: The Solar Air Receiver and Spin-Off Applications
Autoren:
AutorenInstitution oder E-Mail-Adresse der Autoren
Fend, ThomasNICHT SPEZIFIZIERT
Hoffschmidt, BernhardSolar Institut Jülich
Reutter, OliverNICHT SPEZIFIZIERT
Sauerhering, JoergNICHT SPEZIFIZIERT
Pitz-Paal, RobertNICHT SPEZIFIZIERT
Datum:26 Juni 2006
Erschienen in:Proceedings
Referierte Publikation:Ja
In ISI Web of Science:Nein
Status:veröffentlicht
Stichwörter:Solar-Air-Receiver Gas Flow Porous Materials
Veranstaltungstitel:4th International Conference on Nanochannels, Microchannels and Minichannels
Veranstaltungsort:Limerick, Ireland
Veranstaltungsart:internationale Konferenz
Veranstaltungsdatum:2006-06-19 - 2006-06-21
Veranstalter :ASME
HGF - Forschungsbereich:Energie
HGF - Programm:Erneuerbare Energie
HGF - Programmthema:E SF - Solarforschung (alt)
DLR - Schwerpunkt:Energie
DLR - Forschungsgebiet:E SF - Solarforschung
DLR - Teilgebiet (Projekt, Vorhaben):E - Applikationsentwicklung (alt)
Standort: Köln-Porz
Institute & Einrichtungen:Institut für Technische Thermodynamik > Solarforschung
Hinterlegt von: Dr.-Ing. Thomas Fend
Hinterlegt am:04 Jan 2007
Letzte Änderung:12 Dez 2013 20:22

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