Effect of sky clearness index on transmission of evacuated (vacuum) glazing

Aritra Ghosh; Brian Norton; Aidan Duffy

doi:10.1016/j.renene.2016.12.056

Effect of sky clearness index on transmission of evacuated (vacuum) glazing

Aritra Ghosh, Brian Norton, Aidan Duffy

School of Transport and Civil Engineering

Research output: Contribution to journal › Article › peer-review

Abstract

Glazing transmittance variation with clearness index has higher influence than incident angle for soar energy application. This work presents variation of vacuum glazing transmittance with clearness index. Clearness index and transmittance was calculated from measured one year (2014) solar radiation and glazing transmittance data in Dublin, Ireland. Clearness index below 0.5 offer single value of transmittance whereas above 0.5 clearness index glazing transmittance varies with clearness index. For different azimuthal orientation, clearness index associated with vertical plane glazing transmittance has been proposed. In Dublin for south facing vertical plane, vacuum glazing has 35% transmittance below 0.5 clearness index. Yearly usable single transmitted solar energy and solar heat gain coefficient for vertical plane south facing vacuum glazing are 87 W/m²and 0.22 respectively.

Original language	English
Pages (from-to)	160-166
Number of pages	7
Journal	Renewable Energy
Volume	105
DOIs	https://doi.org/10.1016/j.renene.2016.12.056
Publication status	Published - 2017

Keywords

Adaptive
Clearness index
Glazing
Solar heat gain coefficient
Transmission
Vacuum glazing

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10.1016/j.renene.2016.12.056

https://arrow.tudublin.ie/dubenart/63Licence: CC BY-NC-SA

Cite this

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title = "Effect of sky clearness index on transmission of evacuated (vacuum) glazing",

abstract = "Glazing transmittance variation with clearness index has higher influence than incident angle for soar energy application. This work presents variation of vacuum glazing transmittance with clearness index. Clearness index and transmittance was calculated from measured one year (2014) solar radiation and glazing transmittance data in Dublin, Ireland. Clearness index below 0.5 offer single value of transmittance whereas above 0.5 clearness index glazing transmittance varies with clearness index. For different azimuthal orientation, clearness index associated with vertical plane glazing transmittance has been proposed. In Dublin for south facing vertical plane, vacuum glazing has 35% transmittance below 0.5 clearness index. Yearly usable single transmitted solar energy and solar heat gain coefficient for vertical plane south facing vacuum glazing are 87 W/m2and 0.22 respectively.",

keywords = "Adaptive, Clearness index, Glazing, Solar heat gain coefficient, Transmission, Vacuum glazing",

author = "Aritra Ghosh and Brian Norton and Aidan Duffy",

note = "Publisher Copyright: {\textcopyright} 2016 Elsevier Ltd",

year = "2017",

doi = "10.1016/j.renene.2016.12.056",

language = "English",

volume = "105",

pages = "160--166",

journal = "Renewable Energy",

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}

TY - JOUR

T1 - Effect of sky clearness index on transmission of evacuated (vacuum) glazing

AU - Ghosh, Aritra

AU - Norton, Brian

AU - Duffy, Aidan

PY - 2017

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N2 - Glazing transmittance variation with clearness index has higher influence than incident angle for soar energy application. This work presents variation of vacuum glazing transmittance with clearness index. Clearness index and transmittance was calculated from measured one year (2014) solar radiation and glazing transmittance data in Dublin, Ireland. Clearness index below 0.5 offer single value of transmittance whereas above 0.5 clearness index glazing transmittance varies with clearness index. For different azimuthal orientation, clearness index associated with vertical plane glazing transmittance has been proposed. In Dublin for south facing vertical plane, vacuum glazing has 35% transmittance below 0.5 clearness index. Yearly usable single transmitted solar energy and solar heat gain coefficient for vertical plane south facing vacuum glazing are 87 W/m2and 0.22 respectively.

AB - Glazing transmittance variation with clearness index has higher influence than incident angle for soar energy application. This work presents variation of vacuum glazing transmittance with clearness index. Clearness index and transmittance was calculated from measured one year (2014) solar radiation and glazing transmittance data in Dublin, Ireland. Clearness index below 0.5 offer single value of transmittance whereas above 0.5 clearness index glazing transmittance varies with clearness index. For different azimuthal orientation, clearness index associated with vertical plane glazing transmittance has been proposed. In Dublin for south facing vertical plane, vacuum glazing has 35% transmittance below 0.5 clearness index. Yearly usable single transmitted solar energy and solar heat gain coefficient for vertical plane south facing vacuum glazing are 87 W/m2and 0.22 respectively.

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KW - Glazing

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KW - Transmission

KW - Vacuum glazing

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DO - 10.1016/j.renene.2016.12.056

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JO - Renewable Energy

JF - Renewable Energy

ER -

Effect of sky clearness index on transmission of evacuated (vacuum) glazing

Abstract

Keywords

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