Radiation in crawlspace

[camilleroy]

Hi,

Is it possible to account for the radiative transfer between the cold soil in a crawlspace and the floor assembly?
I have tried the Long wave radiation exchange in cavity with 0.95 on the soil side and 0.85 on the gypsum side. I have assumed a space of 1m between the soil and the floor and I have tried assigning Void to it and an air layer as well.

Thank you,

Camille

[fechner]

Hello,

Using the longwave radiation source model is the correct way. This source model can only be assigned to a air space. That means you need to assige air as material to your crawl space.