期刊
SOLAR ENERGY
卷 208, 期 -, 页码 515-526出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.solener.2020.08.018
关键词
Nanofluids; Plasmonic; Broadband solar absorber; Stability; Silver nanoprisms; Silver nanodiscs
资金
- EPSRC at the University of Southampton
- Faculty of Engineering and Physical Sciences at the University of Southampton
This work explores the strategy for increasing the efficiency of solar thermal energy capture by the utilisation of a blended mixture of plasmonic silver nanofluids in a direct absorption solar collector. For the first time, a broadband absorber based on combining three silver-based nanofluids, each with a tailored plasmonic response covering a different wavelength range, was designed and synthesised. The potential efficiency of this broadband absorber was estimated from the UV-Vis-IR spectra and from direct measurement of the temperature rise obtained in static tests in a solar simulator. The results from the two methods were comparable. The broadband absorber was shown to increase the efficiency of capture compared to the component nanofluids and compared to water. The temperature rise in the solar simulator for the broadband mixture was more than four times that of water and the photo-thermal conversion efficiency was approximately 85%, demonstrating the promise of this mixture for enhancing solar energy capture. However, this work also illustrates the potential issues with utilising silver for solar applications, namely the change in morphology and UV-Vis-IR spectra with light exposure. A suitable stabilisation or coating strategy would hence be required to use this developed broadband absorber in solar energy applications.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据