Re: [EnergyPlus_Support] Enthalpy reference temperature - PCM

["Michael J. Witte" <mjwitte@xxxxxxxx>]

My understanding is that the model is computing changes in enthalpy, so the 
reference for zero enthalpy should not matter.  For example, if you were to add 
1000 to every enthalpy value, but keep the same temperatures, you should get 
the same result.  

I will forward this to the Conduction Finite Different model developer for 
clarification.

Mike


On 29 Aug 2007 at 17:19, Renato Sousa wrote:

> Hello all, 
> 
> I'm using simulating a building to see the effect of phase change materials and
> in order to input the Enthalpy-Temperature data, I would like to know which is
> the reference temperature that EnergyPlus uses for a zero enthalpy of the
> material. I couldn't find this on the documentation, and from the example in the
> Input-Output reference (from April 9, 2007 - page 81), it looks like the
> reference temperature for zero enthalpy is -20 ºC. Should I use -20ºC for zero
> enthalpy?
> 
> Thanks in advance,
> 
> Renato Sousa
> 
> Tel: +351 919 316 221 | E-mail: renato.sousa@xxxxxxxxxxxxx
> 
> 
> 
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========================================================
Michael J. Witte, GARD Analytics, Inc.
EnergyPlus Testing and Support      
EnergyPlus-Support@xxxxxxxx





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