Paper Title:
Impact of Cavity Aspect Ratio on Natural Convection Heat Loss of a Solar Receiver for High-Temperature Dish System
  Abstract

A 3-D numerical study has been carried out to uncover the influence of cavity aspect ratio on natural convection heat loss of a solar receiver for high-temperature dish system, accounting for air property variation with temperature. Temperature and velocity contours as well as the variation of the natural convection heat loss with the cavity aspect ratio have been well presented and discussed. It is revealed that the expansion of convection zone together with the augmentation of velocity magnitude result in the increment of natural convection heat loss with decreasing aspect ratio, i.e., with shallower cavity, especially when the cavity aspect ratio larger than 1. Therefore, the solar receiver with much too shallow cavity should be avoided in design.

  Info
Periodical
Advanced Materials Research (Volumes 268-270)
Edited by
Feng Xiong
Pages
214-218
DOI
10.4028/www.scientific.net/AMR.268-270.214
Citation
S. Y. Wu, L. Xiao, Y. R. Li, "Impact of Cavity Aspect Ratio on Natural Convection Heat Loss of a Solar Receiver for High-Temperature Dish System", Advanced Materials Research, Vols. 268-270, pp. 214-218, 2011
Online since
July 2011
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Chuan Zhi Mei, Lin Hua Piao, Quan Gang Yu, Bao Li Zhang, Xia Ding, Xing Wang
Chapter 7: Transmission and Control of Fluid
Abstract:In this paper, the pendulum characteristic of nature convection gas in dimensional enclosure is analyzed by FEM. Using ANSYS-FLOTRAN CFD...
1120