Modeling internal shading in 5.x version

[huntervu28]

As I know, ies 5.9.2 can modeling internal shading in 2 way.
- As obstruction model file.
- As model direct in thermal zone by using command int=off (on) to add shading element into space.

So the question is : Which method is better ? And which method that solar heat absorption on the shading elements affect better in result precision ? (I mean heat from shading elements will increase temperature in calculated zone )

Thanks in advance.

[ZapBran]

I'd sincerely doubt you'll get any heat gain from shading elements - I think they are simply considered visual obstructions to light.
What sort of internal obstructions we talking about here? Partitions? I'd rezone the area if this is the case and use drywall with openings above/around them.

If I was going to this sort of precision then it would be with CFD and using components rather than solar gains heating up room elements using SunCast/ApacheSim.
You asked the CFD guys at IES what they'd do or if they could do it for you?

Zap.

[huntervu28]

Thanks Zap for your reply.

This case I mean the metal venetian blind.
I have to model a cladding zone with venetian blind around (inside) , distance between outside glass and blind is 0.5m, this buffer zone have exhaust fan attached in celling. In my opinion, using CFD is an obligation

Other question : In IES 6.1, how do I set background to black for every new project.

Thanks
Hunter.

[ZapBran]

ah... yeah I'd do this as a double-skin then.

Background colour - yeah it doesn't save your preferences (so not much damned good really).

2 ways I've found
- get admin permissions to be able to save the "untitled" project it seems to load.
- Set up a blank project with your settings and whenever you want to create a new project just load that project and do a "save as". This is my mani method as it keeps my standard systems, templates and fabric.

Zap.