Numerical Evaluation About Spectral Reflection Properties of Solar Collector with Microstructure

Abstract

Renewable energy has garnered more attention in recent years. It is crucial to boost power generation efficiency by raising the solar energy collector's absorption rate while lowering radiation loss in order to boost the efficiency of solar thermal power generation, one of the renewable energy sources. It is well known that adding a microstructure to the surface allows for the modification of spectrum properties. The impact of surface periodic microstructure on solar reflectance properties is assessed in this work. For the analysis of electromagnetic fields, the FDTD approach is used. The visible and near-infrared portions of the solar radiation spectrum are used to compute the reflectance of uneven surfaces, and this ranges from 0.3 mm to 2.5 mm in wavelength.