Control of Moisture Ingress into Photovoltaic Modules

Michael Kempe

Control of Moisture Ingress into Photovoltaic Modules

Michael Kempe

Materials Science

Research output: Contribution to conference › Paper › peer-review

49 Scopus Citations

Abstract

During long-term exposure of photovoltaic modules to environmental stress, the ingress of water into the module is correlated with decreased performance. By using diffusivity measurements for water through encapsulants such as ethylene vinyl acetate (EVA), we have modeled moisture ingress using a finite-element analysis with atmospheric data from various locations such as Miami, Florida. This analysis shows that because of the high diffusivity of EVA, even an impermeable glass back-sheet alone is incapable of preventing significant moisture ingress from the edges for a 20-year lifecycle. This result has led us to investigate ways to protect module from the moisture through the use of different encapsulating chemistries and materials.

Original language	American English
Pages	503-506
Number of pages	4
State	Published - 2005
Event	31st IEEE Photovoltaic Specialists Conference - 2005 - Lake Buena Vista, FL, United States Duration: 3 Jan 2005 → 7 Jan 2005

Conference

Conference	31st IEEE Photovoltaic Specialists Conference - 2005
Country/Territory	United States
City	Lake Buena Vista, FL
Period	3/01/05 → 7/01/05

Bibliographical note

For preprint version see NREL/CP-520-37390

NREL Publication Number

NREL/CP-520-40304

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Cite this

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title = "Control of Moisture Ingress into Photovoltaic Modules",

abstract = "During long-term exposure of photovoltaic modules to environmental stress, the ingress of water into the module is correlated with decreased performance. By using diffusivity measurements for water through encapsulants such as ethylene vinyl acetate (EVA), we have modeled moisture ingress using a finite-element analysis with atmospheric data from various locations such as Miami, Florida. This analysis shows that because of the high diffusivity of EVA, even an impermeable glass back-sheet alone is incapable of preventing significant moisture ingress from the edges for a 20-year lifecycle. This result has led us to investigate ways to protect module from the moisture through the use of different encapsulating chemistries and materials.",

author = "Michael Kempe",

note = "For preprint version see NREL/CP-520-37390; 31st IEEE Photovoltaic Specialists Conference - 2005 ; Conference date: 03-01-2005 Through 07-01-2005",

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T1 - Control of Moisture Ingress into Photovoltaic Modules

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N1 - For preprint version see NREL/CP-520-37390

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N2 - During long-term exposure of photovoltaic modules to environmental stress, the ingress of water into the module is correlated with decreased performance. By using diffusivity measurements for water through encapsulants such as ethylene vinyl acetate (EVA), we have modeled moisture ingress using a finite-element analysis with atmospheric data from various locations such as Miami, Florida. This analysis shows that because of the high diffusivity of EVA, even an impermeable glass back-sheet alone is incapable of preventing significant moisture ingress from the edges for a 20-year lifecycle. This result has led us to investigate ways to protect module from the moisture through the use of different encapsulating chemistries and materials.

AB - During long-term exposure of photovoltaic modules to environmental stress, the ingress of water into the module is correlated with decreased performance. By using diffusivity measurements for water through encapsulants such as ethylene vinyl acetate (EVA), we have modeled moisture ingress using a finite-element analysis with atmospheric data from various locations such as Miami, Florida. This analysis shows that because of the high diffusivity of EVA, even an impermeable glass back-sheet alone is incapable of preventing significant moisture ingress from the edges for a 20-year lifecycle. This result has led us to investigate ways to protect module from the moisture through the use of different encapsulating chemistries and materials.

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M3 - Paper

AN - SCOPUS:27944486204

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EP - 506

T2 - 31st IEEE Photovoltaic Specialists Conference - 2005

Y2 - 3 January 2005 through 7 January 2005

ER -

Control of Moisture Ingress into Photovoltaic Modules

Abstract

Conference

Bibliographical note

NREL Publication Number

UN SDGs

Other files and links

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Cite this