Risk of Using Capillary Active Interior Insulation in a Cold Climate

The retrofitting of cultural heritage buildings for energy efficiency often requires the internal thermal insulation of external walls. Most of the in situ studies of capillary active interior insulation were performed in mild oceanic climate regions, and they showed an excellent performance. Howeve...

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Autores principales:	David Antolinc, Katarina Černe, Zvonko Jagličić
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	capillary active interior insulation historic brick wall cold climate water condensation freezing Technology T
Acceso en línea:	https://doaj.org/article/98abac0c7f1f4f159374d63b47bc0ae2
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spelling	oai:doaj.org-article:98abac0c7f1f4f159374d63b47bc0ae22021-11-11T15:44:07ZRisk of Using Capillary Active Interior Insulation in a Cold Climate10.3390/en142168901996-1073https://doaj.org/article/98abac0c7f1f4f159374d63b47bc0ae22021-10-01T00:00:00Zhttps://www.mdpi.com/1996-1073/14/21/6890https://doaj.org/toc/1996-1073The retrofitting of cultural heritage buildings for energy efficiency often requires the internal thermal insulation of external walls. Most of the in situ studies of capillary active interior insulation were performed in mild oceanic climate regions, and they showed an excellent performance. However, as a large part of Central–Eastern Europe belongs to a continental climate with cold winters and long periods of temperatures below the freezing temperature, the applicability of the capillary active interior insulation in cold climate was studied. The hydrothermal behaviour of the three walls was determined—each consists of one of three different interior insulations—and the original wall is made of historic regular solid bricks. Two interior thermal insulations were capillary active (aerated cellular concrete, calcium silicate) and one vapour-tight (glass foam). A hot box–cold box experiment and a steady-state model were used to demonstrate an increase in the original wall mass due to the water condensation only when the capillary active interior insulation is used. The combination of the water condensation and the low sub-zero temperature may lead to a risk of freeze–thaw damage to the original wall. The numerical simulation of the water vapour condensation for the considered walls for the Slovenian town Bled with sub-zero average winter temperatures was performed to obtain the whole temperature and moisture profile. It showed good agreement between an experimentally and numerically obtained amount of water condensation. The capillary active interior insulation proved to be unsuitable for improving the thermal insulation of buildings in cold continental climate, and only a vapour-tight system can be recommended.David AntolincKatarina ČerneZvonko JagličićMDPI AGarticlecapillary active interior insulationhistoric brick wallcold climatewater condensationfreezingTechnologyTENEnergies, Vol 14, Iss 6890, p 6890 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	capillary active interior insulation historic brick wall cold climate water condensation freezing Technology T
spellingShingle	capillary active interior insulation historic brick wall cold climate water condensation freezing Technology T David Antolinc Katarina Černe Zvonko Jagličić Risk of Using Capillary Active Interior Insulation in a Cold Climate
description	The retrofitting of cultural heritage buildings for energy efficiency often requires the internal thermal insulation of external walls. Most of the in situ studies of capillary active interior insulation were performed in mild oceanic climate regions, and they showed an excellent performance. However, as a large part of Central–Eastern Europe belongs to a continental climate with cold winters and long periods of temperatures below the freezing temperature, the applicability of the capillary active interior insulation in cold climate was studied. The hydrothermal behaviour of the three walls was determined—each consists of one of three different interior insulations—and the original wall is made of historic regular solid bricks. Two interior thermal insulations were capillary active (aerated cellular concrete, calcium silicate) and one vapour-tight (glass foam). A hot box–cold box experiment and a steady-state model were used to demonstrate an increase in the original wall mass due to the water condensation only when the capillary active interior insulation is used. The combination of the water condensation and the low sub-zero temperature may lead to a risk of freeze–thaw damage to the original wall. The numerical simulation of the water vapour condensation for the considered walls for the Slovenian town Bled with sub-zero average winter temperatures was performed to obtain the whole temperature and moisture profile. It showed good agreement between an experimentally and numerically obtained amount of water condensation. The capillary active interior insulation proved to be unsuitable for improving the thermal insulation of buildings in cold continental climate, and only a vapour-tight system can be recommended.
format	article
author	David Antolinc Katarina Černe Zvonko Jagličić
author_facet	David Antolinc Katarina Černe Zvonko Jagličić
author_sort	David Antolinc
title	Risk of Using Capillary Active Interior Insulation in a Cold Climate
title_short	Risk of Using Capillary Active Interior Insulation in a Cold Climate
title_full	Risk of Using Capillary Active Interior Insulation in a Cold Climate
title_fullStr	Risk of Using Capillary Active Interior Insulation in a Cold Climate
title_full_unstemmed	Risk of Using Capillary Active Interior Insulation in a Cold Climate
title_sort	risk of using capillary active interior insulation in a cold climate
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/98abac0c7f1f4f159374d63b47bc0ae2
work_keys_str_mv	AT davidantolinc riskofusingcapillaryactiveinteriorinsulationinacoldclimate AT katarinacerne riskofusingcapillaryactiveinteriorinsulationinacoldclimate AT zvonkojaglicic riskofusingcapillaryactiveinteriorinsulationinacoldclimate
_version_	1718434101901393920

Risk of Using Capillary Active Interior Insulation in a Cold Climate

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