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Glazing for Energy ...
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Engfeldt, Johnny D.ChromoGenics AB, Uppsala
(författare)
Glazing for Energy Efficient Buildings: The Almost Forgotten Role of Angular-Dependent Solar Transmittance
- Artikel/kapitelEngelska2019
Förlag, utgivningsår, omfång ...
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2019-08-23
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Society of Vacuum Coaters,2019
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LIBRIS-ID:oai:DiVA.org:uu-395338
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https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-395338URI
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https://doi.org/10.14332/svc19.proc.0018DOI
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Språk:engelska
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Sammanfattning på:engelska
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Glazing for energy efficient buildings comprises multi-pane units with surface coated glass. According to today’s standards, glazing is characterized by optical measurements at normal light incidence. Here we show that this prerequisite is grossly inadequate for common vertical glazing, in particular regarding solar transmittance and total energy transmittance (g-value). We present data on spectral and angular-dependent transmittance in the 300–2500-nm wavelength range for several types of glass samples with hard (tin-oxide-based) and soft (silver-based) coatings. Furthermore, we use standard procedures to compute g-values for triple-pane glazing embodying such glass and find that the g-value at 60° off-normal angle typically is as low as 65–68% of the g-value for normal incidence. This difference is essential for assessing the energy efficiency of modern buildings and highlights that the glazing’s angularity must be accounted for.
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Biuppslag (personer, institutioner, konferenser, titlar ...)
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Gregard, GregerChromoGenics AB, Uppsala
(författare)
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Niklasson, Gunnar,1953-Uppsala universitet,Fasta tillståndets fysik(Swepub:uu)gni26208
(författare)
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Roos, ArneUppsala universitet,Fasta tillståndets fysik(Swepub:uu)arneroos
(författare)
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Granqvist, Claes Göran,1946-Uppsala universitet,Fasta tillståndets fysik(Swepub:uu)cgr25299
(författare)
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ChromoGenics AB, UppsalaFasta tillståndets fysik
(creator_code:org_t)
Sammanhörande titlar
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Ingår i:Society of Vacuum Coaters 2019 Technical Conference Proceedings: Society of Vacuum Coaters
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