Improving the thermal performance of the transparent building envelope: finite element analysis of possible techniques to reduce the U-value of the glassblocks

Risultato della ricerca: Other

Abstract

U-value of glazed elements is often a critical issue because these components, due to theirsmall thickness and to the poor resistance of the glass and frame materials, cause veryrelevant heat fluxes. This paper presents an investigation on the thermal properties of aparticular glazed component: the glassblock. Generally standard glassblocks have high U-values in comparison to the maximum values allowed by energy efficiency standards forglazed surfaces. This paper reports a summary of possible solutions that could improve theperformances of the glassblock. A set of new configurations of the glassblock has beendefined by schematic models and their overall thermal resistance has been assessed by themeans of Finite Element software. The resulting performances are presented in terms of theglobal thermal transmittance of the modified glassblocks, also considering the effects ofsealing and mortar. The paper also shows some significant potential improvements to addressnew production lines.
Lingua originaleEnglish
Numero di pagine13
Stato di pubblicazionePublished - 2012

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