Building envelope with a new aerogel-based insulating rendering: Experimental and numerical study, cost analysis, and thickness optimization.
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| Title: | Building envelope with a new aerogel-based insulating rendering: Experimental and numerical study, cost analysis, and thickness optimization. |
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| Authors: | Ibrahim, Mohamad1 mohamad.ibrahim@mines-paristech.fr, Biwole, Pascal Henry1,2, Achard, Patrick1, Wurtz, Etienne3, Ansart, Guillaume3 |
| Source: | Applied Energy. Dec2015, Vol. 159, p490-501. 12p. |
| Subjects: | Building envelopes, Energy consumption of buildings, Energy conservation in buildings, Thermal insulation, Thickness measurement, Mathematical optimization |
| Abstract: | In France, renovation of existing buildings has a high priority. The thickness of insulation layers becomes a major issue of concern especially in cities. In this study, we present a recently developed insulating rendering based on silica aerogels that can be applied to new buildings and to retrofit existing ones. A full scale experimental house is built near Chambery in France, with the rendering applied on its external facades. The results of a numerical model developed in EnergyPlus are compared to the on-site measurements. After validating the numerical model, the thickness of the rendering is optimized based on a cost analysis for different climates for the case of retrofitting an old building. Then, a sensitivity analysis is carried out to determine the thickness dependency on annual heating load, present worth factor, rendering’s cost, and heating set-point. Results show that the optimum rendering thickness is in the range of 1.7–4.4 cm and the payback period in the range of 1.4–2.7 years depending on the climate. The optimum thickness increases with the increasing heating set-point and increasing present worth factor; however, it decreases with the increasing rendering cost. [ABSTRACT FROM AUTHOR] |
| Copyright of Applied Energy is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 110511525 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Building envelope with a new aerogel-based insulating rendering: Experimental and numerical study, cost analysis, and thickness optimization. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Ibrahim%2C+Mohamad%22">Ibrahim, Mohamad</searchLink><relatesTo>1</relatesTo><i> mohamad.ibrahim@mines-paristech.fr</i><br /><searchLink fieldCode="AR" term="%22Biwole%2C+Pascal+Henry%22">Biwole, Pascal Henry</searchLink><relatesTo>1,2</relatesTo><br /><searchLink fieldCode="AR" term="%22Achard%2C+Patrick%22">Achard, Patrick</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Wurtz%2C+Etienne%22">Wurtz, Etienne</searchLink><relatesTo>3</relatesTo><br /><searchLink fieldCode="AR" term="%22Ansart%2C+Guillaume%22">Ansart, Guillaume</searchLink><relatesTo>3</relatesTo> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Applied+Energy%22">Applied Energy</searchLink>. Dec2015, Vol. 159, p490-501. 12p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Building+envelopes%22">Building envelopes</searchLink><br /><searchLink fieldCode="DE" term="%22Energy+consumption+of+buildings%22">Energy consumption of buildings</searchLink><br /><searchLink fieldCode="DE" term="%22Energy+conservation+in+buildings%22">Energy conservation in buildings</searchLink><br /><searchLink fieldCode="DE" term="%22Thermal+insulation%22">Thermal insulation</searchLink><br /><searchLink fieldCode="DE" term="%22Thickness+measurement%22">Thickness measurement</searchLink><br /><searchLink fieldCode="DE" term="%22Mathematical+optimization%22">Mathematical optimization</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: In France, renovation of existing buildings has a high priority. The thickness of insulation layers becomes a major issue of concern especially in cities. In this study, we present a recently developed insulating rendering based on silica aerogels that can be applied to new buildings and to retrofit existing ones. A full scale experimental house is built near Chambery in France, with the rendering applied on its external facades. The results of a numerical model developed in EnergyPlus are compared to the on-site measurements. After validating the numerical model, the thickness of the rendering is optimized based on a cost analysis for different climates for the case of retrofitting an old building. Then, a sensitivity analysis is carried out to determine the thickness dependency on annual heating load, present worth factor, rendering’s cost, and heating set-point. Results show that the optimum rendering thickness is in the range of 1.7–4.4 cm and the payback period in the range of 1.4–2.7 years depending on the climate. The optimum thickness increases with the increasing heating set-point and increasing present worth factor; however, it decreases with the increasing rendering cost. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Applied Energy is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1016/j.apenergy.2015.08.090 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 12 StartPage: 490 Subjects: – SubjectFull: Building envelopes Type: general – SubjectFull: Energy consumption of buildings Type: general – SubjectFull: Energy conservation in buildings Type: general – SubjectFull: Thermal insulation Type: general – SubjectFull: Thickness measurement Type: general – SubjectFull: Mathematical optimization Type: general Titles: – TitleFull: Building envelope with a new aerogel-based insulating rendering: Experimental and numerical study, cost analysis, and thickness optimization. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Ibrahim, Mohamad – PersonEntity: Name: NameFull: Biwole, Pascal Henry – PersonEntity: Name: NameFull: Achard, Patrick – PersonEntity: Name: NameFull: Wurtz, Etienne – PersonEntity: Name: NameFull: Ansart, Guillaume IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 12 Text: Dec2015 Type: published Y: 2015 Identifiers: – Type: issn-print Value: 03062619 Numbering: – Type: volume Value: 159 Titles: – TitleFull: Applied Energy Type: main |
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