Experimental study on confined metal foam flow passage as compact heat exchanger surface

Sajid Hossain, M and Shabani, B 2018, 'Experimental study on confined metal foam flow passage as compact heat exchanger surface', International Communications in Heat and Mass Transfer, vol. 98, pp. 286-296.

Document type: Journal Article
Collection: Journal Articles

Title Experimental study on confined metal foam flow passage as compact heat exchanger surface
Author(s) Sajid Hossain, M
Shabani, B
Year 2018
Journal name International Communications in Heat and Mass Transfer
Volume number 98
Start page 286
End page 296
Total pages 11
Publisher Elsevier
Abstract This work focuses on forced convection through asymmetrically heated rectangular confined porous flow passage of aspect ratio of 50 (width/height = 150/3). Heat transfer characteristics of the porous flow passage were investigated with four different open-cell aluminium metal foams (MF) as porous media. Two sets (four samples) of aluminium foams of 20 ppi and 40 ppi pore densities with each set had two different relative densities (RD) of 9-11% and 12-16% (as per supplier's specification). One set of MFs was uncompressed (9-11% relative density) while another set was obtained by unidirectional compressing the MFs of 6-8% RD and 6 mm height flow passages. The study was systemically conducted with constant heat flux at the bottom surface of the flow passage, and on the basis of compact heat transfer surface analogy. Steady state condition was achieved before acquiring data. Temperature distribution along flow direction was investigated to study thermal development of air flow through it. It was found that thermally developed flow exists in such confined flow passages. Moreover, as a case study of a potential application, a systematic method was followed to obtain performance curves for all the flow passages as compact heat transfer surfaces for use in a Polymer Electrolyte Membrane Fuel Cell(PEMFC). The performance curves were utilised to obtain the best compact heat transfer surface for its possible use in a PEMFC.
Subject Chemical Engineering not elsewhere classified
Mechanical Engineering not elsewhere classified
Engineering not elsewhere classified
Keyword(s) Confined flow passage
Forced convection
Heat exchanger surface
Metal foam
Parallel channel
Thermal development
DOI - identifier 10.1016/j.icheatmasstransfer.2018.09.002
Copyright notice © 2018 Elsevier Ltd. All rights reserved.
ISSN 0735-1933
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