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Direct measurement of moisture ingress in PV laminates

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conference contribution
posted on 05.11.2019, 14:11 by Nikoleta Kyranaki, David Whalley, David Hutt, Ralph Gottschalg, Tom Betts
This work demonstrates a novel method for the measurement of moisture ingress into PV laminates, by the use of humidity indicator cards encapsulated within the structure. The humidity indicator cards change colour due to moisture exposure, which is quantified by processing images of the samples taken with a camera. To allow the variance of colour to be matched to specific levels of humidity, a detailed calibration was first performed. To achieve this, laminates with the structure [EVA-humidity indicator card-EVA-glass] were stabilised in an environmental chamber at 85ºC at increasing levels of relative humidity. The colour change of the humidity indicator cards corresponding to the relative humidity inside the chamber was then plotted on RGB colour space diagrams. The purpose of this work is the development of a measurement method for the moisture that accumulates at the front side of PV cells, for the experimental verification of simulations of the moisture ingress into PV modules and the better understanding of degradation modes related to corrosion.

Funding

European Union's H2020 programme SOLAR- TRAIN under grant agreement No 721452.

History

School

  • Mechanical, Electrical and Manufacturing Engineering

Research Unit

  • Centre for Renewable Energy Systems Technology (CREST)

Pages

1049 - 1053

Source

36th European Photovoltaic Solar Energy Conference and Exhibition

Publisher

WIP

Version

AM (Accepted Manuscript)

Rights holder

© WIP

ISBN

3936338604

ISSN

2196-100X

Language

en

Location

Marseille

Event dates

9th September 2019 - 13th September 2019

Depositor

Miss Nikoleta Kyranaki Deposit date: 5 November 2019

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