Interstitial hygrothermal analysis for retrofitting exterior concrete wall of modern heritage building in Korea

Retrofitting modern heritage buildings aims at not only energy conservation, but also restoration and preservation of an architectural artefact. However, if envelope construction is adjusted and HVAC systems are replaced, the temperature and humidity profiles and air-tightness can also be transition...

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Autores principales:	Yena Chae, Sean Hay Kim
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2022
Materias:	Retrofit Heritage building Hygrothermal performance Interstitial condensation Vapor retarder Insulation Materials of engineering and construction. Mechanics of materials TA401-492
Acceso en línea:	https://doaj.org/article/19626578d0e24978a8e96f92c63beccd
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id	oai:doaj.org-article:19626578d0e24978a8e96f92c63beccd
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spelling	oai:doaj.org-article:19626578d0e24978a8e96f92c63beccd2021-12-02T05:01:37ZInterstitial hygrothermal analysis for retrofitting exterior concrete wall of modern heritage building in Korea2214-509510.1016/j.cscm.2021.e00797https://doaj.org/article/19626578d0e24978a8e96f92c63beccd2022-06-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S2214509521003120https://doaj.org/toc/2214-5095Retrofitting modern heritage buildings aims at not only energy conservation, but also restoration and preservation of an architectural artefact. However, if envelope construction is adjusted and HVAC systems are replaced, the temperature and humidity profiles and air-tightness can also be transitional, thus condensation could occur on the surface and/or inside the structure. It is continuously emphasized to assess retrofit measures’ expected transitions in the hygrothermal performance of envelope and their potential condensation problems, prior to actual retrofit. The present study measured the surface moisture content of the concrete structure and built environment of three modern heritage buildings in Seoul. These results were used as the initial conditions for the hygrothermal analysis of insulations and vapor retarder. One modern heritage school was chosen for retrofit, then mock-up test, ISO 13788 steady-state analysis, and dynamic simulations by WUFI were used to analyze the risk of interstitial condensation in the exterior wall, according to the initial moisture content of concrete wall and whether the vapor retarder had been installed. For modern heritage buildings with fully dry concrete walls, the mock-up test verified that the risk of interstitial condensation between the concrete and insulation is low, regardless of whether the vapor retarder had been installed. Per ISO 13788 steady-state analysis and WUFI transient simulation, if PF board was used as the internal insulation for concrete exterior wall, the chance of interstitial condensation was also low, regardless of the initial moisture content and the use of a vapor retarder.Yena ChaeSean Hay KimElsevierarticleRetrofitHeritage buildingHygrothermal performanceInterstitial condensationVapor retarderInsulationMaterials of engineering and construction. Mechanics of materialsTA401-492ENCase Studies in Construction Materials, Vol 16, Iss , Pp e00797- (2022)
institution	DOAJ
collection	DOAJ
language	EN
topic	Retrofit Heritage building Hygrothermal performance Interstitial condensation Vapor retarder Insulation Materials of engineering and construction. Mechanics of materials TA401-492
spellingShingle	Retrofit Heritage building Hygrothermal performance Interstitial condensation Vapor retarder Insulation Materials of engineering and construction. Mechanics of materials TA401-492 Yena Chae Sean Hay Kim Interstitial hygrothermal analysis for retrofitting exterior concrete wall of modern heritage building in Korea
description	Retrofitting modern heritage buildings aims at not only energy conservation, but also restoration and preservation of an architectural artefact. However, if envelope construction is adjusted and HVAC systems are replaced, the temperature and humidity profiles and air-tightness can also be transitional, thus condensation could occur on the surface and/or inside the structure. It is continuously emphasized to assess retrofit measures’ expected transitions in the hygrothermal performance of envelope and their potential condensation problems, prior to actual retrofit. The present study measured the surface moisture content of the concrete structure and built environment of three modern heritage buildings in Seoul. These results were used as the initial conditions for the hygrothermal analysis of insulations and vapor retarder. One modern heritage school was chosen for retrofit, then mock-up test, ISO 13788 steady-state analysis, and dynamic simulations by WUFI were used to analyze the risk of interstitial condensation in the exterior wall, according to the initial moisture content of concrete wall and whether the vapor retarder had been installed. For modern heritage buildings with fully dry concrete walls, the mock-up test verified that the risk of interstitial condensation between the concrete and insulation is low, regardless of whether the vapor retarder had been installed. Per ISO 13788 steady-state analysis and WUFI transient simulation, if PF board was used as the internal insulation for concrete exterior wall, the chance of interstitial condensation was also low, regardless of the initial moisture content and the use of a vapor retarder.
format	article
author	Yena Chae Sean Hay Kim
author_facet	Yena Chae Sean Hay Kim
author_sort	Yena Chae
title	Interstitial hygrothermal analysis for retrofitting exterior concrete wall of modern heritage building in Korea
title_short	Interstitial hygrothermal analysis for retrofitting exterior concrete wall of modern heritage building in Korea
title_full	Interstitial hygrothermal analysis for retrofitting exterior concrete wall of modern heritage building in Korea
title_fullStr	Interstitial hygrothermal analysis for retrofitting exterior concrete wall of modern heritage building in Korea
title_full_unstemmed	Interstitial hygrothermal analysis for retrofitting exterior concrete wall of modern heritage building in Korea
title_sort	interstitial hygrothermal analysis for retrofitting exterior concrete wall of modern heritage building in korea
publisher	Elsevier
publishDate	2022
url	https://doaj.org/article/19626578d0e24978a8e96f92c63beccd
work_keys_str_mv	AT yenachae interstitialhygrothermalanalysisforretrofittingexteriorconcretewallofmodernheritagebuildinginkorea AT seanhaykim interstitialhygrothermalanalysisforretrofittingexteriorconcretewallofmodernheritagebuildinginkorea
_version_	1718400755184959488

Interstitial hygrothermal analysis for retrofitting exterior concrete wall of modern heritage building in Korea

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