If you're not considering phase-change materials , I think the CTF method is perfectly fine. The only limitation of the CTF or any other response factor method is that the material thermal properties are assumed to be constant.
Joe
Joe Huang White Box Technologies, Inc. 346 Rheem Blvd., Suite 108D Moraga CA 94556 yjhuang@xxxxxxxxxxxxxxxxxxxxxxxx www.whiteboxtechnologies.com (o) (925)388-0265 (c) (510)928-2683 "building energy simulations at your fingertips"
On 3/29/2013 10:30 AM, FrancescoP wrote:
In order to optimize a wall from the energy point of view I want to simulate a conditioned building with many simulations. For every simulation the caracteristcs of the wall (thermal transmittance, heat capicty, order of the layers, and so on) will be different. I am going to evaluate no phase-change material (I am going to evaluate only concrete, thermal insulation, bricks).
I wonder whether the finite difference (CFD method) gives a more accurate result than the CFT method. Is the difference between the two methods great for such a kind of simulations?
The wall is stricken by solar radiation.
With Regards
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