Radial two-phase thermal conductivity and wall heat transfer coefficient of ceramic sponges - Experimental results and correlation

被引：20

作者：

Wallenstein, M. ^{[1
]}

Kind, M. ^{[1
]}

Dietrich, B. ^{[1
]}

机构：

[1] Karlsruhe Inst Technol, Inst Thermal Proc Engn, D-76131 Karlsruhe, Germany

来源：

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER | 2014年 / 79卷

关键词：

Ceramic sponge; Open-cell foam; Radial two-phase thermal conductivity; Effective thermal conductivity; Radial heat transfer; Wall heat transfer coefficient; PACKED-BEDS; TRANSFER PARAMETERS; METAL FOAMS; GAS-FLOW; TRANSPORT; PACKINGS; REACTORS; POROSITY; SUPPORTS; TUBES;

D O I：

10.1016/j.ijheatmasstransfer.2014.08.003

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

In this publication, experimental results for the radial two-phase thermal conductivity and the wall heat transfer coefficient of different ceramic sponges (variation of material, porosity and pore size) are presented, revealing a strong influence of the superficial air velocity and of the porosity of the ceramic sponges on both the radial two-phase thermal conductivity and the wall heat transfer coefficient. The experimental data are correlated in dimensionless form to offer a "universal" correlation for estimating the radial two-phase thermal conductivity and the wall heat transfer coefficient of sponges in the future. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：486 / 495

页数：10

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