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Re: [EnergyPlus_Support] Re: Shallow Roof pond over glazed roof



Conductivity, density, specific heat, thickness- these are materiel properties convection coefficients are surface properties. May I ask what software you might be using to author your IDF, and if this is a research or commercial project? 


Jeremiah D. Crossett  | Senior Analyst  |  Phase Change Energy Solutions
120 E. Pritchard St.  | Asheboro, NC 27203  | Mobile 503-688-8951
www.phasechange.com 
 

  






On Wed, Aug 15, 2012 at 10:59 PM, shanznus <rengised.shan@xxxxxxxxx> wrote:
 

Hi thank you for the suggestion. However, as I am still at the beginner stage in using Energyplus, may I know how do I proceed in doing this 'work around' method? How do I add the thickness of the pond water and the specific heat, conductivity and density of water with an adaptive convection coefficient. In addition it must be on the roof layer of the simple rectangular form.



Hope to hear from you soon.

Thank you!

Shan

--- In EnergyPlus_Support@xxxxxxxxxxxxxxx, Jeremiah Crossett <jcrossett@...> wrote:
>
> What about a "work around" possibly using the thickness of the pond water
> and the specific heat, conductivity and density of water with an adaptive
> convection coefficient? On the eQuest modeling forum such "work arounds"
> are quite common. Also TRNSYS has a pond and a pool TYPE 230 (designed as
> a thermal source/sink for a heat pump) as well as a outdoor pool TYPE 344
> (designed for either indoor or outdoor pool) If I where you I would use
> the "work around" by creating a thermodynamically similar material in e+
> rather then attempting to use a TRNSYS type...
> *
> *
> *
> *
> *Jeremiah D. Crossett | Senior Analyst | Phase Change Energy Solutions*

> *
> 120 E. Pritchard St. | Asheboro, NC 27203 | Mobile 503-688-8951
> www.phasechange.com
> *
>
>
>
> *
> *
> *

> *
>
>
>
>
> On Tue, Aug 14, 2012 at 10:32 AM, Griffith, Brent
> <brent.griffith@...>wrote:
>
> > **
> >
> >
> > Sorry, there is no model for this in EnergyPlus.****
> >
> > ** **
> >
> > *From:* EnergyPlus_Support@xxxxxxxxxxxxxxx [mailto:
> > EnergyPlus_Support@xxxxxxxxxxxxxxx] *On Behalf Of *shanznus
> > *Sent:* Tuesday, August 14, 2012 10:47 AM
> > *To:* EnergyPlus_Support@xxxxxxxxxxxxxxx
> > *Subject:* [EnergyPlus_Support] Shallow Roof pond over glazed roof****
> >
> > ** **
> >
> > ****

> >
> > Hi
> >
> > May I know if it is possible to simulate the shallow roof pond which sits
> > above the glazed roof? The objective is to find out the total cooling
> > energy consumption of this room with a 'glazed water roof'.
> >
> > Hope to hear from you soon.
> >
> > Thank you!
> >
> > Shan****
> >
> > ****
> >
> >
> >
>




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