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

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

Authors

Leonardo Micheli

Eduardo F. Fernández

Greg P. Smestad

Hameed Alrashidi

Nabin Sarmah

Nazmi Sellami

Ibrahim A.I. Hassan

Amal Kasry

Gustavo Nofuentes

Neeru Sood

Bala Pesala

S. Senthilarasu

Florencia Almonacid

K.S. Reddy

Matthew Muller

Tapas K. Mallick



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.

Citation

MICHELI, L., FERNÁNDEZ, E.F., SMESTAD, G.P., ALRASHIDI, H., SARMAH, N., SELLAMI, N., HASSAN, I.A.I., KASRY, A., NOFUENTES, G., SOOD, N., PESALA, B., SENTHILARASU, S., ALMONACID, F., REDDY, K.S., MULLER, M. and MALLICK, T.K. 2018. A unified global investigation on the spectral effects of soiling losses of PV glass substrates: preliminary results. In the Proceedings of the 44th Institute of Electrical and Electronics Engineers (IEEE) photovoltaic specialist conference 2017 (2017 IEEE PVSC-44), 25-30 June 2017, Washinghton, USA. Piscataway, NJ: IEEE [online], article ID 8366317. Available from: https://doi.org/10.1109/PVSC.2017.8366317

Conference Name 44th Institute of Electrical and Electronics Engineers (IEEE) photovoltaic specialist conference 2017 (2017 IEEE PVSC-44)
Conference Location Washington, USA
Start Date Jun 25, 2017
End Date Jun 30, 2017
Acceptance Date Mar 22, 2017
Online Publication Date Nov 5, 2018
Publication Date Nov 5, 2018
Deposit Date Jun 20, 2019
Publicly Available Date Jun 20, 2019
Publisher Institute of Electrical and Electronics Engineers
ISBN 9781509056064
DOI https://doi.org/10.1109/PVSC.2017.8366317
Keywords Photovoltaic systems; Reliability; Optical losses; Soiling
Public URL https://rgu-repository.worktribe.com/output/249241

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