Computer Simulation of the Reflection Coefficient of Protective Coatings of Mirrors of Solar Devices

IF 1.204 Q3 Energy Applied Solar Energy Pub Date : 2024-03-05 DOI:10.3103/S0003701X23602004

S. X. Suleymanov, V. G. Dyskin, M. U. Djanklich, N. A. Kulagina

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Abstract

In solar technology mirrors are used with an outer and rear coating of a reflective layer. The reflection coefficient of mirrors with an external coating is greater than that of mirrors with a rear coating, but over time it decreases due to the destructive effects of the external environment. Therefore, solar technology began to apply mirrors with an external coating and a protective film to protect them from the effects of the external environment. The paper presents the results of computer simulation of protective films for aluminum mirrors. It is shown that dielectric films with a refractive index from 1.38 to 1.8 have practically no effect on the reflectance of an aluminum mirror if their thickness does not exceed 15 nm. To protect the surface of an aluminum mirror, SiO₂ + Al and ZnS + MgF₂ mixed films with a thickness from 10 to 15 nm with a SiO₂ and ZnS concentration of 10% are recommended. Of interest is a MgF₂ + ZnS film with a MgF₂ concentration of 43% and a thickness of 10–15 nm. The film reduces the reflection coefficient of the mirror by no more than 2% and has no internal stresses.

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太阳能设备反射镜保护涂层反射系数的计算机模拟

摘要在太阳能技术中，反射镜的外层和后层都有反射层。带有外涂层的反射镜的反射系数大于带有后涂层的反射镜，但随着时间的推移，反射系数会因外部环境的破坏而降低。因此，太阳能技术开始应用带有外涂层和保护膜的反射镜，以保护其不受外部环境的影响。本文介绍了铝镜保护膜的计算机模拟结果。结果表明，折射率在 1.38 至 1.8 之间的电介质膜，如果厚度不超过 15 纳米，对铝镜的反射率几乎没有影响。为了保护铝镜表面，建议使用 SiO2 + Al 和 ZnS + MgF2 混合薄膜，厚度为 10 至 15 nm，SiO2 和 ZnS 的浓度为 10%。值得关注的是 MgF2 + ZnS 薄膜，其 MgF2 浓度为 43%，厚度为 10-15 纳米。这种薄膜可将反射镜的反射系数降低不超过 2%，而且没有内应力。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Applied Solar Energy Energy-Renewable Energy, Sustainability and the Environment

CiteScore

2.50

自引率

0.00%

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期刊介绍： Applied Solar Energy is an international peer reviewed journal covers various topics of research and development studies on solar energy conversion and use: photovoltaics, thermophotovoltaics, water heaters, passive solar heating systems, drying of agricultural production, water desalination, solar radiation condensers, operation of Big Solar Oven, combined use of solar energy and traditional energy sources, new semiconductors for solar cells and thermophotovoltaic system photocells, engines for autonomous solar stations.