RE: [TRNSYS-users] False ceiling

[Arie Kalkman <a.kalkman@chri.nl>]

Maurizio,

Usually, I use the two-zone solution to model a false ceiling.
It depends of course on your modelling purpose.
If you just need the thermal resistance to the thermal mass of the ceiling, 
you might as well replace the plenum by a massless layer with the proper 
thermal resistance.
If the plenum is used for ventilation to/from the room, or if you want to 
know the temperature in the plenum itself, I think the two-zone model is 
required.

regards, Arie




-----Oorspronkelijk bericht-----
Van:	Maurizio Sorce [SMTP:mauriziosorce@dream.unipa.it]
Verzonden:	dinsdag 17 mei 2005 14:44
Aan:	Mailing list TRNSYS
Onderwerp:	[TRNSYS-users] False ceiling

Dear TRNSYS users,

I need to define in TRNBUILD a building with a single thermal zone and a 
false ceiling (green colour in the attachment). I think I can model it 
using two thermal zone (the living space and the false ceiling), but in DOE 
I have an option (plenum) that make the definition simpler. Does exist in 
TRNSYS something of analogous?

---------------------------------------------------------------

Eng. Maurizio Sorce

DREAM Department of Energy and Environmental Research
University of Palermo

Viale delle Scienze, Building 9
I-90128 Palermo, Italy (EU)

mauriziosorce@dream.unipa.it
www.dream.unipa.it

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