IES-VE User Forum

Hi,

I'm wondering whether IES is capable of giving the amount of radiation reflected by an external surface or the amount of radiation incident on a surface which has been diffused by the adjacent building based on the surface reflectance assigned.

For eg. I did 2 simulations for a building of which
1) the surface reflectance is 0.3 and adjacent building surface reflectance is 0.3
2) the surface reflectance is 0.3 and adjacent building surface reflectance is 0.8

and check the incident solar flux on the same surface for both cases. However both give the same results. But in my study I'm in need to determine the amount of increased radiation reflected by the adjacent building and effect of the high surface reflectance.

Is there any other out put that I could get the results for this.

Kindly assist.

Thank you

You may have some luck by modelling the external area between the two buildings as an internal zone, created from 100% opening, totally transparent windows.

IES does not calculate anything once it's left the external envelope of your building, modelling the external area as a fake internal zone is one way of trying to get around this limitation of the software.

JohnLloyd wrote:You may have some luck by modelling the external area between the two buildings as an internal zone, created from 100% opening, totally transparent windows.

IES does not calculate anything once it's left the external envelope of your building, modelling the external area as a fake internal zone is one way of trying to get around this limitation of the software.

Hi I will like to check on how do u create an "internal zone"? If I were to create it as a room and setting the surface as transparent will it be similar? Otherwise what is the best way to go about creating this "boundary" for studies.

Yes, by 'internal zone' I mean a room.

JohnLloyd wrote:Yes, by 'internal zone' I mean a room.

Hi, just to confirm if I draw a room and set it to invisible, it is not equal to an "internal" room?