Impact of an Innovative Solution for the Interruption of 3-D Point Thermal Bridges in Buildings on Sustainability

During the design of the external cladding, it is possible to use different materials and compositions. One of these possibilities is also a ventilated facade, which consists of a supporting structure, a thermal insulation, a supporting grid, an air gap for ventilation and a cladding layer. The cons...

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Autores principales:	Rastislav Ingeli, Jozef Gašparík, Lucia Paulovičová
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	thermal bridge 3-D point thermal bridge heat transfer coefficient perimeter cladding facade anchoring systems Environmental effects of industries and plants TD194-195 Renewable energy sources TJ807-830 Environmental sciences GE1-350
Acceso en línea:	https://doaj.org/article/4c70749eceb24982abe83b09609004f7
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spelling	oai:doaj.org-article:4c70749eceb24982abe83b09609004f72021-11-11T19:20:31ZImpact of an Innovative Solution for the Interruption of 3-D Point Thermal Bridges in Buildings on Sustainability10.3390/su1321115612071-1050https://doaj.org/article/4c70749eceb24982abe83b09609004f72021-10-01T00:00:00Zhttps://www.mdpi.com/2071-1050/13/21/11561https://doaj.org/toc/2071-1050During the design of the external cladding, it is possible to use different materials and compositions. One of these possibilities is also a ventilated facade, which consists of a supporting structure, a thermal insulation, a supporting grid, an air gap for ventilation and a cladding layer. The construction of the supporting grid in the ventilated facade must be mechanically anchored into the supporting structure of the external cladding. This mechanical anchoring causes 3-D point thermal bridges in the external cladding itself. Therefore, the aim of this work is to assess and analyze the influence of these 3-D point thermal bridges on transmission heat losses through the external cladding. A Finite Element Mesh analysis has been used for this analysis. Different types of external cladding compositions were modeled in the simulation program, and the effect on the heat transfer coefficient was determined. In addition to the analysis of the existing anchoring systems, an innovative solution has been suggested that is more economical and easier to implement. The results show that the application of anchors and their number impacts significantly on the thermal properties of the envelope. The difference between the anchoring element with a thermal insulation pad and the patented method is minimal. This is a 1.29% difference. The last variant was a proposal (patent) that the anchoring element is only plastic-coated and thus its thermal engineering properties are improved, which is manifested mainly in heat conduction but also from the radiant point of view, as plasticizing the emissivity changes. Compared to the perimeter cladding without the ap-plication of an anchoring element, the heat loss increases by 29.37%. In addition to the energy savings, there are also financial savings. While the plastic pads costs about EUR 0.3, the plastic coating (patent) represents a price of around EUR 0.03. If we had a building with 10,000 m<sup>2</sup> of wall area where 6 pieces of anchors per 1 m<sup>2</sup> are applied, the savings would be EUR 16,200. Such savings are already significant. The conclusion of this work is that these point thermal bridges have a significant impact on the overall transmission heat loss coefficient and therefore they have overall heat demand and energy demand.Rastislav IngeliJozef GašparíkLucia PaulovičováMDPI AGarticlethermal bridge3-D point thermal bridgeheat transfer coefficientperimeter claddingfacade anchoring systemsEnvironmental effects of industries and plantsTD194-195Renewable energy sourcesTJ807-830Environmental sciencesGE1-350ENSustainability, Vol 13, Iss 11561, p 11561 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	thermal bridge 3-D point thermal bridge heat transfer coefficient perimeter cladding facade anchoring systems Environmental effects of industries and plants TD194-195 Renewable energy sources TJ807-830 Environmental sciences GE1-350
spellingShingle	thermal bridge 3-D point thermal bridge heat transfer coefficient perimeter cladding facade anchoring systems Environmental effects of industries and plants TD194-195 Renewable energy sources TJ807-830 Environmental sciences GE1-350 Rastislav Ingeli Jozef Gašparík Lucia Paulovičová Impact of an Innovative Solution for the Interruption of 3-D Point Thermal Bridges in Buildings on Sustainability
description	During the design of the external cladding, it is possible to use different materials and compositions. One of these possibilities is also a ventilated facade, which consists of a supporting structure, a thermal insulation, a supporting grid, an air gap for ventilation and a cladding layer. The construction of the supporting grid in the ventilated facade must be mechanically anchored into the supporting structure of the external cladding. This mechanical anchoring causes 3-D point thermal bridges in the external cladding itself. Therefore, the aim of this work is to assess and analyze the influence of these 3-D point thermal bridges on transmission heat losses through the external cladding. A Finite Element Mesh analysis has been used for this analysis. Different types of external cladding compositions were modeled in the simulation program, and the effect on the heat transfer coefficient was determined. In addition to the analysis of the existing anchoring systems, an innovative solution has been suggested that is more economical and easier to implement. The results show that the application of anchors and their number impacts significantly on the thermal properties of the envelope. The difference between the anchoring element with a thermal insulation pad and the patented method is minimal. This is a 1.29% difference. The last variant was a proposal (patent) that the anchoring element is only plastic-coated and thus its thermal engineering properties are improved, which is manifested mainly in heat conduction but also from the radiant point of view, as plasticizing the emissivity changes. Compared to the perimeter cladding without the ap-plication of an anchoring element, the heat loss increases by 29.37%. In addition to the energy savings, there are also financial savings. While the plastic pads costs about EUR 0.3, the plastic coating (patent) represents a price of around EUR 0.03. If we had a building with 10,000 m<sup>2</sup> of wall area where 6 pieces of anchors per 1 m<sup>2</sup> are applied, the savings would be EUR 16,200. Such savings are already significant. The conclusion of this work is that these point thermal bridges have a significant impact on the overall transmission heat loss coefficient and therefore they have overall heat demand and energy demand.
format	article
author	Rastislav Ingeli Jozef Gašparík Lucia Paulovičová
author_facet	Rastislav Ingeli Jozef Gašparík Lucia Paulovičová
author_sort	Rastislav Ingeli
title	Impact of an Innovative Solution for the Interruption of 3-D Point Thermal Bridges in Buildings on Sustainability
title_short	Impact of an Innovative Solution for the Interruption of 3-D Point Thermal Bridges in Buildings on Sustainability
title_full	Impact of an Innovative Solution for the Interruption of 3-D Point Thermal Bridges in Buildings on Sustainability
title_fullStr	Impact of an Innovative Solution for the Interruption of 3-D Point Thermal Bridges in Buildings on Sustainability
title_full_unstemmed	Impact of an Innovative Solution for the Interruption of 3-D Point Thermal Bridges in Buildings on Sustainability
title_sort	impact of an innovative solution for the interruption of 3-d point thermal bridges in buildings on sustainability
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/4c70749eceb24982abe83b09609004f7
work_keys_str_mv	AT rastislavingeli impactofaninnovativesolutionfortheinterruptionof3dpointthermalbridgesinbuildingsonsustainability AT jozefgasparik impactofaninnovativesolutionfortheinterruptionof3dpointthermalbridgesinbuildingsonsustainability AT luciapaulovicova impactofaninnovativesolutionfortheinterruptionof3dpointthermalbridgesinbuildingsonsustainability
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Impact of an Innovative Solution for the Interruption of 3-D Point Thermal Bridges in Buildings on Sustainability

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