A Unified Global Investigation on the Spectral Effects of Soiling Losses of PV Glass Substrates: Preliminary Results

Leonardo Micheli, Matthew Muller, Eduardo Fernandez, Greg Smestad, Hameed Alrashidi, Nabin Sarmah, Nazmi Sellami, Ibrahim Hassan, Amal Kasry, Gustavo Nofuentes, Neeru Sood, Bala Pesala, S. Senthilarasu, Florencia Almonacid, K.S. Reddy, Tapas Mallick

Research output: Contribution to conferencePaper

4 Scopus Citations

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.
Original languageAmerican English
Pages2858-2863
Number of pages6
DOIs
StatePublished - 2018
Event2017 IEEE 44th Photovoltaic Specialist Conference (PVSC) - Washington, D.C.
Duration: 25 Jun 201730 Jun 2017

Conference

Conference2017 IEEE 44th Photovoltaic Specialist Conference (PVSC)
CityWashington, D.C.
Period25/06/1730/06/17

NREL Publication Number

  • NREL/CP-5K00-73965

Keywords

  • optical losses
  • photovoltaic systems
  • reliability
  • soiling

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