Re: [TRNSYS-users] reg: roof garden with TYPE 56

[David Bradley <bradley@tess-inc.com>]

Raj,
  I am not aware of a green roof model for TRNSYS. You could
certainly simulate a dry green roof by simply adding a soil material
layer to your Type56 wall description. The problem comes with dealing
with a wet roof, in which case the thermal properties can change quite
dramatically when the roof is dry or wet. I think you would have to write
a model that takes Type56's inside surface temperature and simulates the
temperature, and moisture gradients through the soil layer in your roof.
The model would need to incorporate some algorithm to estimate the
moisture evaporation rate from the roof surface as well as the solar
incident on its surface.  I would be interested to hear if people
have a different idea as to how to approach such a problem. We have seen
a few projects come through with a green roof but never had one in which
we were able to develop such a model.
Cheers,
 David


At 12:20 2/27/2006, RAJ KUMAR wrote:

> Dear TRNSYS
> friends,
>
>         I want  to simulate 
> roof garden with TYPE  56.   Is it 
>  possible to do?. If it is possible, can anyone help 
> me?.
>
>  Regards,
> Rajkumar.S
>
>
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