Visible light transmittance (VLT) is a percentage of the visible portion of the solar energy spectrum coming through the glass. It is expressed as a figure between 0 (no light) and 100 (all light). This value measures the ability of the glass to transmit light and facilitate daylighting.
Light transmittance (LT) and solar factor (Sg) are closely related . When we are looking for high-performance glazing, particularly to reduce summer overheating, we look for a low solar factor. It is then necessary to pay attention to light transmission, which is sometimes very low for solar protection devices.
This study analyse spectral transmission of solar radiation of glass and plastics. The 8 h transmittances are higher than at 12 h and are higher in winter than summer. Methacrylate and smoked glass have the highest transmittance in UV, VIS and NIR ranges. Polycarbonate has the lowest transmittance in UV, VIS and NIR ranges.
The method is applicable to any type of sun protection devices in parallel with glazing, such as shutters or blinds. Sun protection devices can be installed inside a protected room, outside or in a gap between double glazing. The method is applicable in cases when total solar transmittance through glazing ranges between 0.15 and 0.85.
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Solar glass demonstrates superior light transmission capabilities, typically achieving rates above 91%, while standard glass usually manages only 80-85%. This enhanced …
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Results: The results showed that the glass types differed significantly in measured daylight transmittance. The two-layered high …
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The main values in the choice of glass are thermal transmittance, light transmittance, and the solar factor. The solar factor g is the ratio between the solar energy that …
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The primary solar heat gain component is just the solar energy transmittance of the glass. The secondary solar heat gain component is …
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Based on these transmittance spectra, solar transmittance measurement software was used to calculate solar transmittance and …
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Glass in building — Determination of light transmittance, solar direct transmittance, total solar energy transmittance, ultraviolet transmittance and related glazing …
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Glass is treated to decrease its emittance for use as transparent insulation for glazing applications. If the diffuse radiation from the sky and the radiation reflected from the …
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Visible light transmittance (VLT) is a percentage of the visible portion of the solar energy spectrum coming through the glass. It is expressed as a figure between 0 (no light) and …
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In this paper we analyse the spectral transmission of solar radiation of widely used materials using the transmittance parameter. The measurements were performed on clear …
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Download scientific diagram | a Solar heat gain through a single-glass window; b spectral transmittance of clear glass and low-E glass windows. …
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Optical Properties of Windows Controlling visible light transmittance, solar heat gain and thermal insulation of a window is key for making it energy efficient. These properties …
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Light transmission and solar factor Light transmittance (LT) and solar factor (Sg) are closely related . When we are looking for high-performance …
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High-performance glass tint meter can measure ultraviolet rejection rate, infrared rejection rate and visible light transmittance at the same time. …
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The method is applicable to any type of sun protection devices in parallel with glazing, such as shutters or blinds. Sun protection devices can be installed inside a protected room, outside or …
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Access SPG''s glass performance data sheets. Get specs for Pilkington, Guardian, Saint-Gobain, and more. Download PDFs for detailed insights.
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Solar glass is a specialized low-iron, tempered soda-lime silicate glass, often enhanced with an anti-reflective coating. This combination delivers ultra-high light transmittance, superior …
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Potential energy savings Advanced low-E coating formulations can allow for high light transmission to help reduce the need …
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The solar a.nd infra-red transmittance can be used to develop a thermal balance equation for a collector operating at a given solar flux input and fluid inlet and outlet operating …
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Download scientific diagram | a Solar heat gain through a single-glass window; b spectral transmittance of clear glass and low-E glass windows. Sources: Whole Building Design Guide …
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Based on these transmittance spectra, solar transmittance measurement software was used to calculate solar transmittance and visible light transmittance values. The results …
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Download scientific diagram | a Solar heat gain through a single-glass window; b spectral transmittance of clear glass and low-E glass windows.
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Light transmission and solar factor Light transmittance (LT) and solar factor (Sg) are closely related . When we are looking for high-performance glazing, particularly to reduce summer …
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