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Evaluation of Snow Removal Methods for Rooftop Photovoltaics
RISE Research Institutes of Sweden, Bioekonomi och hälsa, Bioraffinaderi och energi.ORCID-id: 0000-0001-8804-7679
RISE Research Institutes of Sweden, Bioekonomi och hälsa, Bioraffinaderi och energi.ORCID-id: 0000-0002-1903-9875
RISE Research Institutes of Sweden, Samhällsbyggnad, Bygg och fastighet.ORCID-id: 0000-0003-3298-1416
RISE Research Institutes of Sweden, Bioekonomi och hälsa, Bioraffinaderi och energi.ORCID-id: 0000-0003-3048-4491
2022 (engelsk)Konferansepaper, Publicerat paper (Fagfellevurdert)
Abstract [en]

Avoiding snow on photovoltaic (PV) installations is motivated for two reasons: to decrease power losses from shading, or to decrease mechanical loads to avoid damage to the PV-installation and the underlying construction. We experimentally investigated the effectiveness and suitability of four different snow removal methods at our facility in the north of Sweden (Piteå, 65°N), throughout three winters. The layout of a PV installation and the underlying roof, together with meteorological conditions and snow characteristics, impact which methods are best suited for snow removal. A simple roof rake with a rectangular toolhead works well when the snowpack is compact and not too thick, whereas a roof rake with a slide works better when the snow is dry and packed. Neither the investigated passive hydrophobic surface coatings, nor the active forward bias electrical heating methods induced shedding of the accumulated snowpack in our experiments without additional intervention. At our test facility in Piteå, the roof rake with a slide was the most effective and user-friendly snow removal. Despite maximum snow loads of approximately 1 kPa, far below the modules’ rating, cell damage was observed for both snow removal groups (except for the slide roof rake group) and the control group.

sted, utgiver, år, opplag, sider
2022. s. 1122-1128
Emneord [en]
Evaluation, Rooftop, Electroluminescence, Durability, Snow
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Identifikatorer
URN: urn:nbn:se:ri:diva-61619DOI: 10.4229/WCPEC-82022-4DO.4.6ISBN: 3-936338-86-8 (digital)OAI: oai:DiVA.org:ri-61619DiVA, id: diva2:1721225
Konferanse
8th World Conference on Photovoltaic Energy Conversion
Tilgjengelig fra: 2022-12-21 Laget: 2022-12-21 Sist oppdatert: 2023-06-08bibliografisk kontrollert

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Granlund, AlexanderLindh, E. MattiasVikberg, TommyMalou Petersson, Anna

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