ISO 23237:2023
ISO 2023 – All rights reserved INTERNATIONAL STANDARD ISO 23237:2023(E) Glass in building — Laminated solar photovoltaic glass for use in buildings — Light transmittance measurement method
ET ISO 9050: Glass in building -
ET ISO 9050 (2003) (English): Glass in building -- Determination of light transmittance, solar direct transmittance, total solar energy transmittance, ultraviolet transmittance and related glazing factors
Glass in building — Laminated solar photovoltaic glass for use in
This document was prepared by Technical Committee ISO/TC 160, Glass in building. Any feedback or questions on this document should be directed to the user''s national standards body.
INTERNATIONAL STANDARD 9050
ISO 9050 Second edition 2003-08-15 Glass in building — Determination of light transmittance, solar direct transmittance, total solar energy transmittance, ultraviolet transmittance and related glazing
Performance value terms
Solar Energy Direct Transmittance (Te, %) is the percentage of incident solar energy in the wavelength range of 300 nm to 2500 nm that is directly transmitted by the glass.
Solar Transmittance/Solar Reflectance Measurement
Measurements were conducted on four types of commercial plate glass to determine their respective visible transmittance, visible reflectance, solar transmittance, solar reflectance, and normal emittance
ISO 9050:2003
ISO 9050:2003 specifies methods of determining light and energy transmittance of solar radiation for glazing in buildings. These characteristic data can serve as a basis for light, heating and ventilation
Key Glass Performance Measures
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).
Complete list of glass optical & thermal properties
Solar energy transmittance: the fraction of solar energy transmitted through a glass. Solar energy reflectance, front: the fraction of solar energy reflected by the front side of a glass.
BESS Containers
20ft/40ft BESS containers from 500kWh to 5MWh with liquid cooling, grid-forming inverters – ideal for utility and industrial microgrids.
Industrial Microgrids
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PV & Foldable Containers
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Telecom Tower ESS
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