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International Heat Transfer Conference 15

ISSN: 2377-424X (online)
ISSN: 2377-4371 (flashdrive)

High Temperature Metal Foam Heat Exchanger

Pakeeza Hafeez
Student

Saeid Salavati
Department of Mechanical and Industrial Engineering, University of Toronto

Javad Esmaeelpanah
Center for Advanced Coating Technologies, Department of Mechanical and Industrial Engineering, University of Toronto, Toronto, Ontario, Canada, M5S 3G8

Sanjeev Chandra
Center for Advanced Coating Technologies, Department of Mechanical and Industrial Engineering, University of Toronto, Toronto, Ontario, Canada, M5S 3G8

Javad Mostaghimi
Center for Advanced Coating Technologies, Department of Mechanical and Industrial Engineering, University of Toronto, Toronto, Ontario, Canada, M5S 3G8

Tom Coyle
Department of Mechanical and Industrial Engineering, University of Toronto

DOI: 10.1615/IHTC15.fcv.009036
pages 3129-3138


キーワード: Convection, Conduction, Metal Foam, Heat Transfer, Heat Exchanger

要約

A heat exchanger was made by brazing nickel foam to an Inconel outer shell. The heat transfer performance of the heat exchanger was tested by exposing its outer surface to combustion gases at a temperature of 550°C while cooling air was blown through it. The mass flow rate of air was varied while both the temperature rise of the air and the heat exchanger surface temperature distribution were measured. The heat transfer, Nusselt number and effectiveness of the foam heat exchanger were higher than those of a hollow channel with the same external dimensions. The difference was small at low Reynolds numbers (< 250), but at higher Reynolds numbers the performance of the foam heat exchanger improved significantly. At high flow rates the metal foam helps to enhance heat transfer from the heat exchanger shell to the air flowing within it.

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