IES-VE User Forum

Thanks for that, I'll give it a try.

Hi,

I want to add a louvre ventilation opening in an external wall. I am concerned that if I add this as a 'window' in ModelIT and then specify it as a 'louvre' opening type in Macroflo that solar gain/ fabric losses of this 'window' will impact simulation results?

Do I add this as a door instead ...

Hi JohnLloyd,

Well done for finding a solution.
I did a similar thing and used a construction I found in the 'education' construction fabric templates and that was how I determined that you can add glass if you use the plate glass in boards and sheeting category rather than in glazing category ...

Hi luanaepb,

I understand what you mean now I think. You are correct in that there will be heat transfer by radiation through the glass into the cavity and onto the solid surface within the fabric construction and hence potential heat gain in the room and so I see your concern. Unfortunately IES ...

Hi luanaepb,

Fabric information required for thermal calculation are included in the properties for plate glass ie thickness, SHC, conductivity etc.

Transmittance and reflectance are only relevant when looking at light transmittance through glazing. Curtain walling is opaque so no light passes ...

Hi luanaepb,

Yes I couldnt find anything in the latest user guide for curtain walling so I would be interested in the responses you get about this too.

I did solve my issue in a very simple way that the professors did not suggest and it appears to work ok. You CAN add glass as a layer to an opaque ...

Thanks for the reponses Kasper and Zap. I will give them a try to determine which method gives the best results.

It is odd IES doesn't allow you to create a fabric construction using my combination of materials since they are all in the database?

Having to manually calculate a U value, Admittance ...

Hi,

I am trying to create a curtain wall construction in Building Template Manager but after entering the other materials it does not let me add glass as a layer in an external wall.

The wall construction is glass/airgap/glass/cavity/insulation/ plywood/ insulation/ cavity/ plasterboard.

Any help ...

I have modelled rooms with openings in Macroflo but now need to check compliance with ventilation criterion: daily average ventilation rate above 160 l/s during occupied period.

How do I determine the 'daily average'? I can determine the Macroflo external ventilation rate with a range test in Vista ...

Thanks for the reply.
The 'fake' facade would be ok visually but would impact on the thermal characteristics of the facade and hence alter the room gains that I am trying to determine.
Useful info on daylighting calcs - thanks (will be useful later) but not concerned with that for this model ...