Effect of sky conditions on light transmission through a suspended particle device switchable glazing

Aritra Ghosh; Brian Norton; Aidan Duffy

doi:10.1016/j.solmat.2016.09.049

Effect of sky conditions on light transmission through a suspended particle device switchable glazing

Aritra Ghosh, Brian Norton, Aidan Duffy

School of Transport and Civil Engineering

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

35 Citations (Scopus)

Abstract

A suspended particle device (SPD) switchable glazing changes its state from opaque to transparent in the presence of a power supply. SPD glazing's near normal transmission varies with incident angle and clearness index. Due to a lower diffuse component, higher glazing transmission ensues at higher clearness indices. Transmittance values for different azimuthal incident angle for a SPD glazing for its “transparent” and “opaque” states have been determined. In Dublin, below 0.5 clearness index, isotropic diffuse transmittance was prevailed while transmission of direct insolation was dominant above 0.5 clearness index. For south facing vertical plane SPD glazing transmittance in its transparent and opaque states are 0.25 and 0.025 respectively while clearness index is below 0.5.

Original language	English
Pages (from-to)	134-140
Number of pages	7
Journal	Solar Energy Materials and Solar Cells
Volume	160
DOIs	https://doi.org/10.1016/j.solmat.2016.09.049
Publication status	Published - 1 Feb 2017

Keywords

Clearness index
Glazing
Incident angle
SPD glazing
Solar energy (SE)
Transmission

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10.1016/j.solmat.2016.09.049

https://arrow.tudublin.ie/engschcivart/74Licence: CC BY-NC-SA

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title = "Effect of sky conditions on light transmission through a suspended particle device switchable glazing",

abstract = "A suspended particle device (SPD) switchable glazing changes its state from opaque to transparent in the presence of a power supply. SPD glazing's near normal transmission varies with incident angle and clearness index. Due to a lower diffuse component, higher glazing transmission ensues at higher clearness indices. Transmittance values for different azimuthal incident angle for a SPD glazing for its “transparent” and “opaque” states have been determined. In Dublin, below 0.5 clearness index, isotropic diffuse transmittance was prevailed while transmission of direct insolation was dominant above 0.5 clearness index. For south facing vertical plane SPD glazing transmittance in its transparent and opaque states are 0.25 and 0.025 respectively while clearness index is below 0.5.",

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

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T1 - Effect of sky conditions on light transmission through a suspended particle device switchable glazing

AU - Ghosh, Aritra

AU - Norton, Brian

AU - Duffy, Aidan

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N2 - A suspended particle device (SPD) switchable glazing changes its state from opaque to transparent in the presence of a power supply. SPD glazing's near normal transmission varies with incident angle and clearness index. Due to a lower diffuse component, higher glazing transmission ensues at higher clearness indices. Transmittance values for different azimuthal incident angle for a SPD glazing for its “transparent” and “opaque” states have been determined. In Dublin, below 0.5 clearness index, isotropic diffuse transmittance was prevailed while transmission of direct insolation was dominant above 0.5 clearness index. For south facing vertical plane SPD glazing transmittance in its transparent and opaque states are 0.25 and 0.025 respectively while clearness index is below 0.5.

AB - A suspended particle device (SPD) switchable glazing changes its state from opaque to transparent in the presence of a power supply. SPD glazing's near normal transmission varies with incident angle and clearness index. Due to a lower diffuse component, higher glazing transmission ensues at higher clearness indices. Transmittance values for different azimuthal incident angle for a SPD glazing for its “transparent” and “opaque” states have been determined. In Dublin, below 0.5 clearness index, isotropic diffuse transmittance was prevailed while transmission of direct insolation was dominant above 0.5 clearness index. For south facing vertical plane SPD glazing transmittance in its transparent and opaque states are 0.25 and 0.025 respectively while clearness index is below 0.5.

KW - Clearness index

KW - Glazing

KW - Incident angle

KW - SPD glazing

KW - Solar energy (SE)

KW - Transmission

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Effect of sky conditions on light transmission through a suspended particle device switchable glazing

Abstract

Keywords

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