[esp-r] Re: Change Thermophysical Properties

[Achim Geissler]

Dear Helia

that is a very interesting question. Without ever having tried this myself, I would still expect that
1- as the thermophysical property changing is independent of the PCM setup, you will be able to set this up, yes.
2- the specific (sensible and latent) heat capacity of the zone/surface/layer you have added the PCM to via .spf file will be used disregarding the overridden layer properties in the changing thermophysical properties.  I.e., the PCM will always be present in terms of thermal capacity. 

Probably setting up a model with side-by-side surfaces which use thermophysical property changing but only one of which has PCM added is a good idea to check what actually happens.

Good luck!

Best
Achim



On Sep 1, 2013, at 9:30 AM, helia.taheri at ut.ac.ir wrote:

> Hi,
> 
> I want to simulate a movable insulation for a thermal mass, like PCM.
> I know that I can use change thermophysical property in ESP-r.
> I have some question:
> 1- As you know for adding PCM I should use active materials and add PCM in
> a construction. I want to know is it possible that I have a construction
> with PCM and change the thermophysical properties?
> 2- If I can do it with PCM, does ESP-r assign the heat that PCM saves in
> itself in a period of time to the switched construction? (I mean that if I
> have PCM in the switchable construction, the PCM in the second
> construction will be the PCM in the first one, with the heat that it
> stored in itself?
> 
> I really need your guidance.
> 
> Thanks alot,
> Best,
> Helia
> 
> 
> 
> 
> 
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achim.geissler at intergga.ch