Abstract The main objective of this paper is to design, calibrate and make functional a horizontal test bench used to carry out the experimental simulation of solar reflectors erosion induced by sand particles. The developed equipment provides the possibility to control the air speed, the impact angle between the fluid flow and the target surface as well as the mass rate of the ejected particles. The originality of this work lies on the introduction of a new parameter, identified as, the unified sand mass received by the samples in each test, without considering the experiments conditions (air speed, impact angle, etc.) by acting on the ejected sand mass poured in the sand container. To make the setup operational, a set of calibration tests was conducted under multiple scenarios. The collected data from the calibration tests were analyzed to choose the appropriate configuration. A multiple linear regression function was applied to analyze the influence of the inputs parameters on the tests repeatability. A descriptive equation calculating the amount of sand needed to ensure the unified sand mass, homogeneity and repeatability of the experiments is introduced. The results of erosion simulation carried on solar glass reflectors are also presented; for an air speed of 25 m/s, the reflectance loss is two times greater in 90° (11.03%) than the registered in 45° (5.31%). The developed bench should help researchers to set up their devices for the conduction of advanced experiments ensuring that the obtained results are as repeatable as efficient.

中文翻译：

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模拟太阳反射器侵蚀的实验测试台的开发和校准

摘要 本文的主要目的是设计、校准和使用水平试验台，用于进行沙粒引起的太阳反射器侵蚀的实验模拟。开发的设备提供了控制空气速度、流体流与目标表面之间的冲击角以及喷射粒子的质量速率的可能性。这项工作的独创性在于引入了一个新的参数，即每次测试中样品所接收到的统一砂质量，而没有考虑作用于喷出的砂的实验条件（风速、撞击角等）将质量倒入砂容器中。为了使设置可操作，在多个场景下进行了一组校准测试。分析从校准测试中收集的数据以选择合适的配置。应用多元线性回归函数来分析输入参数对测试可重复性的影响。介绍了计算所需砂量的描述性方程，以确保实验的统一砂量、均匀性和可重复性。还介绍了对太阳能玻璃反射器进行侵蚀模拟的结果；对于 25 m/s 的空气速度，90° (11.03%) 的反射损失是 45° (5.31%) 记录的两倍。开发的工作台应该帮助研究人员设置他们的设备以进行高级实验，确保获得的结果具有可重复性和高效性。应用多元线性回归函数来分析输入参数对测试可重复性的影响。介绍了计算所需砂量的描述性方程，以确保实验的统一砂质量、均匀性和可重复性。还介绍了对太阳能玻璃反射器进行侵蚀模拟的结果；对于 25 m/s 的空气速度，90° (11.03%) 的反射损失是 45° (5.31%) 记录的两倍。开发的工作台应该帮助研究人员设置他们的设备以进行高级实验，确保获得的结果具有可重复性和高效性。应用多元线性回归函数来分析输入参数对测试可重复性的影响。介绍了计算所需砂量的描述性方程，以确保实验的统一砂质量、均匀性和可重复性。还介绍了对太阳能玻璃反射器进行侵蚀模拟的结果；对于 25 m/s 的空气速度，90° (11.03%) 的反射损失是 45° (5.31%) 记录的两倍。开发的工作台应该帮助研究人员设置他们的设备以进行高级实验，确保获得的结果具有可重复性和高效性。介绍了实验的均匀性和可重复性。还介绍了对太阳能玻璃反射器进行侵蚀模拟的结果；对于 25 m/s 的空气速度，90° (11.03%) 的反射损失是 45° (5.31%) 记录的两倍。开发的工作台应该帮助研究人员设置他们的设备以进行高级实验，确保获得的结果具有可重复性和高效性。介绍了实验的均匀性和可重复性。还介绍了对太阳能玻璃反射器进行侵蚀模拟的结果；对于 25 m/s 的空气速度，90° (11.03%) 的反射损失是 45° (5.31%) 记录的两倍。开发的工作台应该帮助研究人员设置他们的设备以进行高级实验，确保获得的结果具有可重复性和高效性。