Investigation on the Solar Absorption Property of the Nanoporous Alumina Sheet for Solar Application
In order to improve the absorption performance of the aluminum sheet for solar application, the nanoporous alumina sheets with the pore diameters of 30 nm and 400 nm were prepared by the anodic oxidation method. The absorption properties of the nanoporous alumina sheets under different solar radiati...
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doaj-9b5a9ac5ea614c74af9ac1f32daf8fbc2020-11-24T21:35:13ZengMDPI AGMaterials1996-19442019-07-011214232910.3390/ma12142329ma12142329Investigation on the Solar Absorption Property of the Nanoporous Alumina Sheet for Solar ApplicationSong He0Yanmei Zhang1Wansheng Yang2Zhangyuan Wang3Xudong Zhao4Pingnuo Wang5School of Civil and Transportation Engineering, Guangdong University of Technology, Guangzhou 510006, ChinaSchool of Materials and Energy, Guangdong University of Technology, Guangzhou 510006, ChinaSchool of Civil and Transportation Engineering, Guangdong University of Technology, Guangzhou 510006, ChinaSchool of Civil and Transportation Engineering, Guangdong University of Technology, Guangzhou 510006, ChinaSchool of Engineering, University of Hull, Hull HU6 7RX, UKSchool of Architecture and Urban-Rural Plannin, Fuzhou University, Fuzhou 350108, ChinaIn order to improve the absorption performance of the aluminum sheet for solar application, the nanoporous alumina sheets with the pore diameters of 30 nm and 400 nm were prepared by the anodic oxidation method. The absorption properties of the nanoporous alumina sheets under different solar radiation intensity were studied and compared with the conventional polished aluminum sheet. The results showed that the average absorptivity of the aluminum sheets decreased with the increase of the radiation intensity. When the radiation intensity was 100 W/m<sup>2</sup>, the nanoporous alumina sheet with the 30 nm pore diameter had the highest average solar absorptivity of 0.39, which was 18% higher than that of the nanoporous alumina sheet with 400 nm pore diameter, and 50% higher than that of the polished aluminum sheet. The maximum instantaneous absorption efficiency of the nanoporous alumina sheet with 30 nm pore diameter was found at 0.92 when the radiation intensity was 100 W/m<sup>2</sup>. The testing results indicated that the nanoporous alumina sheet with the 30 nm pore diameter performed the best compared with the other two aluminum sheets. By error propagation analysis, the relative error of the average amount of heat absorption and the average absorptivity were acceptable.https://www.mdpi.com/1996-1944/12/14/2329anodic oxidation methodnanoporous alumina sheetsolar radiationabsorptivity |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Song He Yanmei Zhang Wansheng Yang Zhangyuan Wang Xudong Zhao Pingnuo Wang |
spellingShingle |
Song He Yanmei Zhang Wansheng Yang Zhangyuan Wang Xudong Zhao Pingnuo Wang Investigation on the Solar Absorption Property of the Nanoporous Alumina Sheet for Solar Application Materials anodic oxidation method nanoporous alumina sheet solar radiation absorptivity |
author_facet |
Song He Yanmei Zhang Wansheng Yang Zhangyuan Wang Xudong Zhao Pingnuo Wang |
author_sort |
Song He |
title |
Investigation on the Solar Absorption Property of the Nanoporous Alumina Sheet for Solar Application |
title_short |
Investigation on the Solar Absorption Property of the Nanoporous Alumina Sheet for Solar Application |
title_full |
Investigation on the Solar Absorption Property of the Nanoporous Alumina Sheet for Solar Application |
title_fullStr |
Investigation on the Solar Absorption Property of the Nanoporous Alumina Sheet for Solar Application |
title_full_unstemmed |
Investigation on the Solar Absorption Property of the Nanoporous Alumina Sheet for Solar Application |
title_sort |
investigation on the solar absorption property of the nanoporous alumina sheet for solar application |
publisher |
MDPI AG |
series |
Materials |
issn |
1996-1944 |
publishDate |
2019-07-01 |
description |
In order to improve the absorption performance of the aluminum sheet for solar application, the nanoporous alumina sheets with the pore diameters of 30 nm and 400 nm were prepared by the anodic oxidation method. The absorption properties of the nanoporous alumina sheets under different solar radiation intensity were studied and compared with the conventional polished aluminum sheet. The results showed that the average absorptivity of the aluminum sheets decreased with the increase of the radiation intensity. When the radiation intensity was 100 W/m<sup>2</sup>, the nanoporous alumina sheet with the 30 nm pore diameter had the highest average solar absorptivity of 0.39, which was 18% higher than that of the nanoporous alumina sheet with 400 nm pore diameter, and 50% higher than that of the polished aluminum sheet. The maximum instantaneous absorption efficiency of the nanoporous alumina sheet with 30 nm pore diameter was found at 0.92 when the radiation intensity was 100 W/m<sup>2</sup>. The testing results indicated that the nanoporous alumina sheet with the 30 nm pore diameter performed the best compared with the other two aluminum sheets. By error propagation analysis, the relative error of the average amount of heat absorption and the average absorptivity were acceptable. |
topic |
anodic oxidation method nanoporous alumina sheet solar radiation absorptivity |
url |
https://www.mdpi.com/1996-1944/12/14/2329 |
work_keys_str_mv |
AT songhe investigationonthesolarabsorptionpropertyofthenanoporousaluminasheetforsolarapplication AT yanmeizhang investigationonthesolarabsorptionpropertyofthenanoporousaluminasheetforsolarapplication AT wanshengyang investigationonthesolarabsorptionpropertyofthenanoporousaluminasheetforsolarapplication AT zhangyuanwang investigationonthesolarabsorptionpropertyofthenanoporousaluminasheetforsolarapplication AT xudongzhao investigationonthesolarabsorptionpropertyofthenanoporousaluminasheetforsolarapplication AT pingnuowang investigationonthesolarabsorptionpropertyofthenanoporousaluminasheetforsolarapplication |
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1725945945159368704 |