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JIS R 3106:2019

JIS R 3106:2019

$37.70

Testing method for transmittance, reflectance and emissivity of flat glass and calculation of total solar energy transmittance of glazing

Published By Publication Date Number of Pages
JIS 2019-03-20 53
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This Standard specifies methods of determining the transmittance/reflectance of visible light and the transmittance/reflectance/absorptance of solar radiation as well as the emissivity of thermal radiation at ambient temperature for glazing 1), using a spectrophotometer.

Also, this Standard specifies the method to calculate the total solar energy transmittance when glazing is used as building apertures.

These characteristic data can serve as a basis for light, heating/cooling and ventilation calculations of rooms and can permit comparison between different types of glazing.

This Standard also specifies the appropriate calculation formulae for single, double and triple glazing, which are applicable to more glazing.

NOTE The International Standard corresponding to this Standard and the symbol of degree of correspondence are as follows.

ISO 9050:2003 Glass in building—Determination of light transmittance, solar direct transmittance, total solar energy transmittance, ultraviolet transmittance and related glazing factors (MOD)

In addition, symbols which denote the degree of correspondence in the contents between the relevant International Standard and JIS are IDT (identical), MOD (modified), and NEQ (not equivalent) according to ISO/IEC Guide 21-1.

Note 1) Glazing is as follows, except that having diffuse transmissivity such as figured glazing.

a) Glazing mainly manufactured from soda lime silicate glass by continuous moulding process

b) Glazing in a) of which the surface is processed with optical coating of wavelength-selective reflection such as a heat reflecting glass in wavelength region of solar radiation, and a low emitting glass (Low-E glass) in wavelength region of thermal radiation at ambient temperature such as a low radiation glass

c) Laminated glass, tempered glass, heat-strengthened glass, tempered fire resistance glass, etc. on which the process of a) or b) is given for the purpose of fragment retention, strength enhancement, etc.

d) Insulating glass and vacuum glass using the flat glass of a) to c), except those containing lattice, etc. in a hollow layer

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JIS R 3106:2019
$37.70