AN EXPERIMENTAL-STUDY OF FREE-CONVECTION IN COMPOUND PARABOLIC CONCENTRATOR (CPC) CAVITIES

被引：12

作者：

CHEW, TC ^{[1
]}

WIJEYSUNDERA, NE ^{[1
]}

TAY, AO ^{[1
]}

机构：

[1] NATL UNIV SINGAPORE, DEPT MECH & PROD ENGN, SINGAPORE 0511, SINGAPORE

来源：

JOURNAL OF SOLAR ENERGY ENGINEERING-TRANSACTIONS OF THE ASME | 1988年 / 110卷 / 04期

关键词：

Heat Transfer--Convection - Data Processing--Data Reduction and Analysis;

D O I：

10.1115/1.3268270

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

An experimental study of the free convection heat transfer between the cylindrical absorber and the flat top of a compound parabolic concentrator (CPC) is described. Results are obtained for a range of absorber temperatures and four CPC cavity heights. For similar conditions of operating temperature, the heat transfer from a cylinder in free air is about 30 to 50 percent higher than in a CPC cavity. Two correlations for Nusselt and Grashof numbers have been obtained using the equivalent length and the cavity height as the characteristic length of the system.

引用

页码：293 / 298

页数：6

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