Hi @Shanice,
Thanks for linking me your script.
Some thoughts:
- Side note - I just found out IES’ definition of U-values is HB’s definition of U-factors (HB defines U-values differently, not including the air film resistance, see here). I think that the way you’ve set up your model is probably correct between the two softwares, but thought you might find this useful to know as it was new to me.
- I think it would be worth starting from a single zone model to make it easier to compare to start with. Multi zone models bring in adjacencies which add further complexity to the models and potential differences.
- Ground floor U-values and adjacencies are a common source of differences between models. IES by default will have air as the adjacency for ground floors, whereas it looks like HB uses ground temperature (I know ground temperatures vary with depth and I’m not sure which it uses). It looks like the room you’re testing in detail is a ground floor room so this could have a significant impact.
I’m going to have to leave it there for now, but will hopefully pick this up again and add to this post.