A unified global investigation on the spectral effects of soiling losses of PV glass substrates: preliminary results

Micheli, Leonardo; Fern�ndez, Eduardo F; Smestad, Greg P; Alrashidi, Hameed; Sarmah, Nabin; Sellami, Nazmi; Hassan, Ibrahim AI; Kasry, Amal; Nofuentes, Gustavo; Sood, Neeru; et al.

Abstract

The present work reports on the initial results of an international collaboration aiming to investigate the spectral effects of soiling losses. Identical glass coupons have been exposed outdoors for eight weeks in different locations worldwide, and weekly direct and hemispherical transmittance (T%) measurements are compared. Maximum losses as high as 7% and 50% in hemispherical and direct transmittance, respectively, have been found during the 8-week outdoor exposure. At the end of the data collection, a preliminary analysis of the spectral impact of soiling has been performed. The results show that the blue end of the spectrum is more affected and that lower hemispherical T% correlate to larger area covered by particles.

• Presentation Conference Type: Conference Paper (Published)
• Conference Name: 2017 IEEE 44th Photovoltaic Specialist Conference (PVSC)
• Start Date: Jun 25, 2017
• End Date: Jun 30, 2017
• Acceptance Date: Mar 1, 2017
• Online Publication Date: Nov 5, 2018
• Publication Date: 2017
• Deposit Date: Dec 12, 2021
• Publisher: Institute of Electrical and Electronics Engineers
• Pages: 2858-2863
• Book Title: 2017 IEEE 44th Photovoltaic Specialist Conference (PVSC)
• DOI: https://doi.org/10.1109/PVSC.2017.8366317
• Public URL: http://researchrepository.napier.ac.uk/Output/2818574