IES-VE User Forum

Hello everybody,

Hope everyone is doing ok. Has anybody any experience with modelling a frit glazing system?

Might a suitable method be to identify the identify the surface as entirely glazed, identify the transmissivity of the treated sections of the glazing, identify the ratio of treated to untreated area and apply a weighted factor to the entire glazed area?

Any ideas would be welcome. Thanks! Tom

Hi Tom,

That sounds like a reasonable approach to this problem. Would be interested to hear any other approaches as well.

One question are you doing energy/thermal analysis or is it for daylighting? Radiance has options for modifiers and BSDF that you can apply if you can source it from a manufacturer or other and can give really nice effects in images and calculations

Phil

Hi Phil,

Thanks for your response. This is for an energy and thermal model, so we'll go with the approach identified above. Thank you for providing a bit of a sense check.

Of course if anybody else has an alternative approach, this would be great to hear as well.

Thanks, Tom

Tom,

I'm running an overheating simulation at the moment to test a fritted coating on the inner pane of a unit with solar film on the outer. A 50% white dot pattern is reducing G-value of a 70/35 DG unit to 0.28. VLT drops to 46%. I have obtained these sample calculations from a manufacturer and can pass on details with actual transmittance and reflectances if you wish.

Cheers

Jeremy