IES-VE User Forum

Hi,

I am working on a design for a swimming pool at a high end spa. The architect has proposed a huge rooflight (approx 60m2) that covers most of the pool hall.

The solar gains are obviously huge but the intention is to slide the whole rooflight to effectively leave a massive hole in the roof for natural ventilation.

How can this be modeled in IES? I effectively want a window to dynamically change into a hole.

I could represent the rooflight as a window then open it via Macroflo, but would this remove the effect of the glazing being there? Or would the solar gains still be calculated based on the g-value of the glazing that is no longer there?

Any help would be appreciated.

Ross

Opening the window via macroflo does not impact the solar gains unfortunately. However, you could probably account for it by modelling the glass as having a g value of 1.0 but then apply a blind to the glass construction with a profile to activate whenever the rooflight is closed. You would need to experiment with the properties of the blind to get to the required reduction in solar gain but in theory it might work.

CP