[esp-r] Re: phase change materials

[Achim Geissler]

Hi Arianna,

you write you can't see "substantial reduction" - but you do see a reduction? You will need quite a bit of PCM for substantial differences (.gt. 1 to 2 K), probably.

Which PCM model are you using? I think the basic "53" model cannot really take different temperatures for melting/solidification into account.

A simple approach for testing: If you have two otherwise identical surfaces, put the PCM in one and then look at the temperature profiles for a day for these surfaces (or split one of the PCM surfaces into two and remove the PCM from one of these). This should quickly give you an idea on if something is happening ("something" may be disappointingly small temperature differences).

Best
Achim


>  
> Von: esp-r-bounces at lists.strath.ac.uk [mailto:esp-r-bounces at lists.strath.ac.uk] Im Auftrag von Arianna Sdei
> Gesendet: Mittwoch, 10. September 2014 16:59
> An: esp-r at lists.strath.ac.uk Club
> Betreff: [esp-r] phase change materials
>  
> Dear All,
>  
> I am trying to use phase change materials, phase change plasterboard, via the active components. I am using a melting temperature of 26°C and a solidification temperature of 27°C. I am not sure about the solidification temperature and I would like to know if some of you can advise on this. I am trying to have the PCM exposed, so I always position it on the internal layer as I suppose when the software asks for the position it starts counting the existing layers from the exterior.
>  
> However I try, I can’t see any substantial reduction in the indoor temperature during a hot summer month. Can any of you give some advice on how to reduce the indoor temperature further by changing the parameters?
>  
> Thank you in advance,
>  
> Best regards,
>  
> Arianna   
>  
> Arianna Sdei
>  
> Research Fellow IFORE (Innovation For Renewal)
>  
> UNIVERSITY OF BRIGHTON
>  
> Moulsecoomb, Lewes Road, Brighton, BN2 4AT
>  
> mobile: 0044 (0)7981739024
>  
>  
> 
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achim.geissler at intergga.ch




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