Imaging Spectroscopy as a Tool for Material Characterization

  • Hanan Al-Messabi

Student thesis: Master's Thesis

Abstract

With the rapid development of solar power, there is a lot of ongoing research work to enhance the performance of PVs in order to get the maximum efficiency. However, a common challenge in PV systems is the fact that they are affected by different elements surrounding them: geographical position of the PV, weather surrounding the location, and the PVs inclination. From this, the PV loses part of its efficiency which as a result leads to a considerable decrease in the total generated power. The major element of the weather effects is soiling, which acts as an isolator in between solar cells in the PV and solar radiation. Studies on the effect of dust on solar power generation in the UAE are limited. In this study, we study the effect of soiling on PVs transmittance and also the main characteristics of the deposited dust. For this, a dust accumulation setup was designed and installed with various tilt angles to collect the dust samples at Masdar Field Station. Weekly and twice-a-month dust deposit patterns were studied to characterize the dust. Two main tools were used to study and analyze the properties of collected dust: the Fourier transform infrared spectroscopy (FT-IR), and the Hyperspectral Camera operating in the 400-1000 nm range. The results of the experiments demonstrated the relation between tilt angles and the accumulated dust, besides the critical impact of changes in weather patterns. From this, it is suggested to use solar panels that focus mainly on wavelengths in between 450 and 750 nm. The FT-IR analysis also revealed the general chemical composition of the deposited dust.
Date of AwardMay 2017
Original languageAmerican English

Keywords

  • Imaging Spectroscopy; Solar Power Generation; United Arab Emirates; Hyperspectral Camera.

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