Preparation of selective surfaces and determination of optimum thickness for maximum selectivity

被引：5

作者：

Bhowmik, NC ^{[1
]}

Rahman, J ^{[1
]}

Khan, MAA ^{[1
]}

Mazumder, ZH ^{[1
]}

机构：

[1] Univ Dhaka, Fac Sci, Renewable Energy Res Ctr, Dhaka 1000, Bangladesh

来源：

RENEWABLE ENERGY | 2001年 / 24卷 / 3-4期

关键词：

selective surface; thickness; selectivity;

D O I：

10.1016/S0960-1481(01)00053-2

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Selective surface is used for the utilisation of solar energy by photo-thermal devices. For this purpose CuO and CrO3 films were prepared and their optical properties like reflectance, emittance and absorptance were studied. The selectivity of different samples were calculated from the measured data. Film thickness was measured with a high resolution micrometer. The optimum thickness for maximum selectivity was determined from the thickness vs. selectivity plot. A selective surface of CuO showed a maximum selectivity of 8.08 at thickness 0.011 mm and CrO3 showed a maximum selectivity of 19.6 at thickness 0.015 mm. The result is better than the results obtained by earlier researchers. (C) 2001 Elsevier Science Ltd. All rights reserved.

引用

页码：663 / 666

页数：4