Swelling Behaviour of Static Seals in Redox Flow Batteries

This paper analyses the implications of swelling in perspective of sealing technology for redox flow batteries (RFB). Mechanical failure due to swell in static sealing can occur on the elastomeric seal or on sealing flanges. The mechanical failure is in this case a fractured or deformed RFB componen...

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Autores principales:	Detlef Jannes, Lothar Hörl, Frank Bauer
Formato:	article
Lenguaje:	EN
Publicado:	Japanese Society of Tribologists 2021
Materias:	redox flow batteries swelling behaviour static seals model experiment Physics QC1-999 Engineering (General). Civil engineering (General) TA1-2040 Mechanical engineering and machinery TJ1-1570 Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/edd5c615985d43c1a85f3f987845c316
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spelling	oai:doaj.org-article:edd5c615985d43c1a85f3f987845c3162021-11-05T09:31:04ZSwelling Behaviour of Static Seals in Redox Flow Batteries1881-219810.2474/trol.16.138https://doaj.org/article/edd5c615985d43c1a85f3f987845c3162021-06-01T00:00:00Zhttps://www.jstage.jst.go.jp/article/trol/16/2/16_138/_pdf/-char/enhttps://doaj.org/toc/1881-2198This paper analyses the implications of swelling in perspective of sealing technology for redox flow batteries (RFB). Mechanical failure due to swell in static sealing can occur on the elastomeric seal or on sealing flanges. The mechanical failure is in this case a fractured or deformed RFB component because of the swelling pressure. Swelling of such an elastomeric seal is a coupling of different physics phenomena, namely diffusion and solid mechanics. In an assembled RFB, seal swelling increases the contact pressure with the sealing flange, while making the components softer. It shifts the mechanical material properties of the components and also the stress tolerances. Graphite-polymer bipolar plates or PTFE / PP flowframes are common RFB sealing flanges and can become softer due to diffusion of the electrolyte fluid, making the flanges more prone to creep. These are time dependent effects that can create sealing failure or mechanical break of the sealing flanges and must be taken into account in RFB design. The presented experimental and modelling results validate the swelling behaviour for an assembled RFB. The compatibility tables of sealing materials in catalogues do not often differentiate swelling compatibility from chemical compatibility of a fluid. In addition, this paper proposes a basic selection procedure for swelling compatibility based on group experiments on Hansen solubility parameters (HSP).Detlef JannesLothar HörlFrank BauerJapanese Society of Tribologistsarticleredox flow batteriesswelling behaviourstatic sealsmodelexperimentPhysicsQC1-999Engineering (General). Civil engineering (General)TA1-2040Mechanical engineering and machineryTJ1-1570ChemistryQD1-999ENTribology Online, Vol 16, Iss 2, Pp 138-145 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	redox flow batteries swelling behaviour static seals model experiment Physics QC1-999 Engineering (General). Civil engineering (General) TA1-2040 Mechanical engineering and machinery TJ1-1570 Chemistry QD1-999
spellingShingle	redox flow batteries swelling behaviour static seals model experiment Physics QC1-999 Engineering (General). Civil engineering (General) TA1-2040 Mechanical engineering and machinery TJ1-1570 Chemistry QD1-999 Detlef Jannes Lothar Hörl Frank Bauer Swelling Behaviour of Static Seals in Redox Flow Batteries
description	This paper analyses the implications of swelling in perspective of sealing technology for redox flow batteries (RFB). Mechanical failure due to swell in static sealing can occur on the elastomeric seal or on sealing flanges. The mechanical failure is in this case a fractured or deformed RFB component because of the swelling pressure. Swelling of such an elastomeric seal is a coupling of different physics phenomena, namely diffusion and solid mechanics. In an assembled RFB, seal swelling increases the contact pressure with the sealing flange, while making the components softer. It shifts the mechanical material properties of the components and also the stress tolerances. Graphite-polymer bipolar plates or PTFE / PP flowframes are common RFB sealing flanges and can become softer due to diffusion of the electrolyte fluid, making the flanges more prone to creep. These are time dependent effects that can create sealing failure or mechanical break of the sealing flanges and must be taken into account in RFB design. The presented experimental and modelling results validate the swelling behaviour for an assembled RFB. The compatibility tables of sealing materials in catalogues do not often differentiate swelling compatibility from chemical compatibility of a fluid. In addition, this paper proposes a basic selection procedure for swelling compatibility based on group experiments on Hansen solubility parameters (HSP).
format	article
author	Detlef Jannes Lothar Hörl Frank Bauer
author_facet	Detlef Jannes Lothar Hörl Frank Bauer
author_sort	Detlef Jannes
title	Swelling Behaviour of Static Seals in Redox Flow Batteries
title_short	Swelling Behaviour of Static Seals in Redox Flow Batteries
title_full	Swelling Behaviour of Static Seals in Redox Flow Batteries
title_fullStr	Swelling Behaviour of Static Seals in Redox Flow Batteries
title_full_unstemmed	Swelling Behaviour of Static Seals in Redox Flow Batteries
title_sort	swelling behaviour of static seals in redox flow batteries
publisher	Japanese Society of Tribologists
publishDate	2021
url	https://doaj.org/article/edd5c615985d43c1a85f3f987845c316
work_keys_str_mv	AT detlefjannes swellingbehaviourofstaticsealsinredoxflowbatteries AT lotharhorl swellingbehaviourofstaticsealsinredoxflowbatteries AT frankbauer swellingbehaviourofstaticsealsinredoxflowbatteries
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Swelling Behaviour of Static Seals in Redox Flow Batteries

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