Roof Glazing using polycarbonates - template material

andrelopes · Posts: 17

Hi all

To simulate a roof glazing using polycarbonate, which template material (coated poly 55???) should I use that assures:

- U-value of the polycarbonate

- Solar and Light Transmission of the polycarbonate

This is for a Supermarket skylight (polycarbonate thickness= 6mm)

Regards

A L

lklawrie · Posts: 69

I would think you would need to specify it like other WindowGlass materials.

In EnergyPlus terms:
! The values after the name are:
! Th: Thickness (m)
! Ts: Solar transmittance at normal incidence
! Rfs: Front solar reflectance at normal incidence
! Rbs: Back solar reflectance at normal incidence
! Tv: Visible transmittance at normal incidence
! Rfv: Front visible reflectance at normal incidence
! Rbv: Back visible reflectance at normal incidence
! Tir: Hemispherical IR transmittance
! Ef: Front hemispherical diffuse IR (thermal) emissivity
! Eb: Back hemispherical diffuse IR (thermal) emissivity
! Con: Conductivity (W/m-K)
! where
! "Front" is side of glass furthest from zone window is defined in
! "Back" is side of glass closest to zone window is defined in
!
! All solar and visible transmittance and reflectance values are spectral average values
!
! Name Th Ts Rfs Rbs Tv Rfv Rbv Tir Ef Eb Con

MATERIAL:WindowGlass,CLEAR 6MM,SpectralAverage, ,.006,.775,.071,.071,.881,.080,.080,.0,.84,.84,.9;

andrelopes · Posts: 17

Thank you Linda.

But, what I need to know is what DesignBuilder template material can simulate a polycarbonate roof glazing.

Regards

A L

andrelopes · Posts: 17

Linda

OK.

I understood your answer. I have to create the material.

Thank you

A L

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