高通量辐照对太阳能吸收层加速老化试验的影响分析

IF 6 2区 工程技术 Q2 ENERGY & FUELS
Sahar Hosseini , Mahdiar Taheri , Shuang Wang , Inmaculada Cañadas , Aránzazu Fernández-García , Kaoru Tsuda , Florian Sutter , Simon Caron , Antonio Tricoli , Wojciech Lipiński , Juan F. Torres , Joe Coventry
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引用次数: 0

摘要

太阳能吸收体涂层在聚光太阳能热(CST)电站中起着至关重要的作用,影响着太阳能吸收体的效率。为了研究涂层的寿命,通常采用各种方法进行加速老化试验。本研究采用三种方法进行了模拟云通道影响的热循环试验:(1)采用垂直裂管炉的炉法;(2)利用太阳炉的日通量法;(3)采用高通量太阳模拟器的模拟通量法。这三种方法中最简单的是在可编程炉中循环加热,避免了对集中辐射源的要求。测试的主要目的是比较这些方法,并了解高通量辐照是否会影响光学降解率。在模拟通量法500次循环(总测试时间约62小时)和非太阳通量法300次循环(总测试时间约40小时)后,这两种高通量方法与炉内测试方法之间的太阳吸收率最大差异小于0.3%,这一结果与本研究中测试的两种涂层类型,Pyromark和珊瑚结构涂层一致。我们认为紫外线辐射的影响或在样品上使用较高的通量梯度可能对涂层的老化特性并不重要,并且更简单的炉膛测试方法可能足以用于许多应用。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Analysis of the impact of high-flux irradiation in accelerated aging testing of solar absorber coatings
Solar absorber coatings play a critical role in concentrating solar thermal (CST) plants by impacting receiver efficiency. To study the lifetime of coatings, they are typically subjected to accelerated aging tests using various methods. In this study, thermal cycling tests designed to simulate the effects of cloud passage were conducted using three methods: (1) a furnace method using a vertical split tube furnace; (2) an on-sun flux method using a solar furnace; (3) and a simulated flux method using a high-flux solar simulator. The simplest of these three methods, cycling heating in a programmable furnace, avoids the requirement for a concentrated radiation source. The main aim of the testing was to compare these methods and understand if high-flux irradiation impacts the optical degradation rate. After 500 cycles (around 62 h of total testing time) using the simulated flux method and 300 cycles (around 40 h of total testing time) using the on-sun flux method, the maximum difference in solar absorptance between these two high-flux methods and the furnace test method was less than 0.3 %, a result consistent for both coating types tested in this study, Pyromark and a coral-structured coating. We suggest the effects of UV radiation or operating with higher flux gradients across samples may not be important to aging characteristics of coatings, and that the simpler furnace test method may be sufficient for many applications.
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来源期刊
Solar Energy
Solar Energy 工程技术-能源与燃料
CiteScore
13.90
自引率
9.00%
发文量
0
审稿时长
47 days
期刊介绍: Solar Energy welcomes manuscripts presenting information not previously published in journals on any aspect of solar energy research, development, application, measurement or policy. The term "solar energy" in this context includes the indirect uses such as wind energy and biomass
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