[TRNSYS-users] Simulation of false ceiling: influence on inertia

[David BRADLEY]

Joke,
  I like to simulate this situation as two thermal zones; the 
conditioned zone below and the plenum zone above. Because the suspended 
ceiling basically has no mass to it, I simulate it as a wall made up of 
a single purely resistive (ie massless) layer.
best,
  Davod


On 10/14/2011 03:44, Joke De Beuckelaer wrote:
>
> Dear all,
>
> Can anyone help me what's the best way to simulate a suspended false 
> ceiling?
>
> The goal is to simulate a class room where the comfort is assured by 
> using night ventilation. However for acoustic reasons we need a false 
> ceiling.
>
> I want to know the percentage of suspended false ceiling is possible 
> in order to have still enough inertia from the concrete ceiling.
>
> Is the best way just to define two different types of ceiling (1. A 
> concrete ceiling and 2.a false ceiling (concrete + air layer + false 
> ceiling)) or has anyone another idea?
>
> Is it possible to draw for example some obstructions in Google sketch 
> up and then to define 3 air nodes in trnsys. One air node above the 
> suspended false ceiling; one air node in the middle of the room and 
> one air node representing the opening window?
>
> Will it take into account the less availability of the inertia of the 
> concrete ceiling?
>
> Hoping for an answer,
>
> Joke De Beuckelaer
>
> project engineer mep
>
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-- 
***************************
David BRADLEY
Principal
Thermal Energy Systems Specialists, LLC
22 North Carroll Street - suite 370
Madison, WI  53703 USA

P:+1.608.274.2577
F:+1.608.278.1475
d.bradley at tess-inc.com

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