Re: Interfacing facade collectors, Trombe walls, etc. with

[Jeff Thornton <thornton@xxxxxxxxxxxx>]

At 03:03 PM 4/23/2004 +0200, you wrote:

> I have
> the same problem: writing
> model that communicate with Type 56.
>  
> I'm very intersted by your way to do it,
> because you say you have a good feed back "with excellent
> results".
> I suppose you can do this if the boundary wall
> computed in type56 is thin enough to use a steady state
> asumption?

For most of the work we do with the Type 56/ new model interface, the
walls are very thin (plywood with asphalt shingles) so the method should
work fine.
 
> I have
> chosen an other method. In spite of using
> "the inside roof surface
> temperature (an output from Type 56) and the 
> resistance (1 / U value)" , I use the "energy to the outside
> surface..." (QCOMO, output Ntypes20 of type56) as input of the model
> I create.
> Do you think it's an acceptable
> solution?
> It 's very new so I don't have enough results
> and comparisons to evaluate this method.

I have been trying to think of a way in which your idea will not work and
have not been able to find one.  I'm assuming you then calculate the
interface temperature between the wall outside surface and the new model
and provide this to Type 56 as the boundary input?  If so, I think
your idea is perfectly acceptable for both thin and thick walls - but I'd
like to test it and see how it works in practice.  If it works like
I believe, I may have to re-write a few of our models....

Good thinking!

Jeff

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