Heat transfer in inclined rectangular receivers for concentrated solar radiation

被引：26

作者：

Muftuoglu, A. ^{[1
]}

Bilgen, E. ^{[1
]}

机构：

[1] Ecole Polytech, Montreal, PQ H3C 3A7, Canada

来源：

INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER | 2008年 / 35卷 / 05期

基金：

加拿大自然科学与工程研究理事会;

关键词：

natural convection; concentrated radiation; rectangular inclined cavities; receivers;

D O I：

10.1016/j.icheatmasstransfer.2008.01.002

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

We study heat transfer in inclined rectangular cavities, which may be used as receivers of concentrated solar radiation. One of the active walls is subject to concentrated solar radiation and the other is kept at constant temperature. Continuity, momentum and energy equations are solved by finite difference - control volume numerical method. The relevant governing parameters are: the Rayleigh numbers from 10(3) to 10(12), the cavity aspect ratio, A=L/H from 0.5 to 2, the inclination angle, phi from 30 to 90 degrees. We found that the Nusselt number is an increasing function of the Rayleigh number, the aspect ratio and the inclination angle. Based on the computed data a correlation is derived in the form of Nu = f(Ra, A, phi). (C) 2008 Elsevier Ltd. All rights reserved.

引用

页码：551 / 556

页数：6

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