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Re: [EnergyPlus_Support] Using two Heat Balance Algorithm in one simulation?





agreed, one can choose a different algorithm for different surfaces



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Jeremiah D. Crossett
 
 | Applications Engineer  | LEED Green Associate 
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7411 SW Capitol Highway 205A | Portland, OR 97219 
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On Tue, Jun 2, 2015 at 2:32 AM, Julien Marrec julien.marrec@xxxxxxxxx [EnergyPlus_Support] <EnergyPlus_Support@xxxxxxxxxxxxxxx> wrote:
 

Just to clarify, in this case, where he's got radiant ceiling and PCM in walls, he should be able to select a different algorithm right? The problem is when you have both PCM and radiant in the same wall or ceiling?

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Julien Marrec, EBCP, BPI MFBA
Energy&Sustainability Engineer
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2015-06-02 8:19 GMT+02:00 Jeremiah Crossett jcrossett@xxxxxxxxxxxxxxx [EnergyPlus_Support] <EnergyPlus_Support@xxxxxxxxxxxxxxx>:
 

Yes, but to have a radiant loop in the surface would require the same construction and thus algorithm selection.  



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Jeremiah D. Crossett
 
 | Applications Engineer  | LEED Green Associate 
â??â??
7411 SW Capitol Highway 205A | Portland, OR 97219 
â??â??
 | Direct 503-688-8951
  




On Mon, Jun 1, 2015 at 8:43 PM, 'jeannieboef@xxxxxxxxx' jeannieboef@xxxxxxxxx [EnergyPlus_Support] <EnergyPlus_Support@xxxxxxxxxxxxxxx> wrote:
 

Oh! I didn't mean on the same construction. Just that you can assign a different method to different constructions within the same simulation.

Mit freundlichen Grü�en- Sent from my iPhone (excuse the brevity)

i. A.
Jean Marais
b.i.g. bechtold

On 01.06.2015, at 23:04, "Jeremiah Crossett jcrossett@xxxxxxxxxxxxxxx [EnergyPlus_Support]" <EnergyPlus_Support@xxxxxxxxxxxxxxx> wrote:

 

My experience is that once choosing Conduction Finite Difference on the surface or construction level that it overrides the Conduction Transfer Function choice.




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Jeremiah D. Crossett
 
 | Applications Engineer  | LEED Green Associate 
â??â??
7411 SW Capitol Highway 205A | Portland, OR 97219 
â??â??
 | Direct 503-688-8951
  




On Mon, Jun 1, 2015 at 2:01 PM, Linda Lawrie linda@xxxxxxxxxxxxxx [EnergyPlus_Support] <EnergyPlus_Support@xxxxxxxxxxxxxxx> wrote:
 

I believe so but I'd ask the question of the helpdesk to be sure.

At 02:26 PM 5/29/2015, shahabsherafat@xxxxxxxxx [EnergyPlus_Support] wrote:

Hi,

I want to simulate a room with a Radiant cooling system in ceiling and

PCM(phase change material) boards in walls..

Is it possible to choose a "Conduction Finite Difference" algorithm in "Heat Balance Algorithm"

[to take into account PCMs] AND! also use a "Conduction Transfer Function" algorithm

in "Surface Property:Heat Transfer Algorithm" for ceiling surface or ceiling construction, to calculate

Radiant cooling effects?

Thank's alot







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Posted by: Jeremiah Crossett <jcrossett@xxxxxxxxxxxxxxx>


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