Dear Jean and Mn,
Thank you very much for your reply.
Jean: so... As I understand, you are saying that I can eliminate the intezone surfaces of unconditioned zone and model the rest surfaces as shading. in this way, I will eliminate this unconditioned zone. Am I right? there is only one thing about your solution. ...... ,I think this unconditioned opening has very less wind respect to outside, although it may have same temperature, so is not completely like outside. . Also, shading is just considered for shading calculation not wind calculation.
Mn: by your advice, I can eliminate the opening and model unconditioned zone without this horizontal opening. but I should consider" Air Change Per Hour" in this zone infiltration object=>6 . Am I correct? Also, Do you have any idea about Jean's solution. I think it is also a good idea.
I do not know how to thank you for your suggestions. It means a lot to me.
Best,
Tilak
On Thursday, November 26, 2015 1:16 AM, "MN mneves32@xxxxxxxxx [EnergyPlus_Support]" <EnergyPlus_Support@xxxxxxxxxxxxxxx> wrote:
Hi,
This if what I think:
1. Your conditioned zones have surfaces that contact the unconditioned zones. So there is heat transfer between them.
2. If your unconditioned zone has a big opening to the outside, then it is safe to assume that this space will have a zone tempteture about the same as the outside air
3. If your set the infiltration sir change to lets da 6 ach this should do it. So the unconditioned zone will tend to the outside tempteture.
4. I think this will be a approximation of the system you described. And will estimate the energy transfer which in turn will be integrated by the Hvac of the conditioned space.
Hope this helps
Mn
This if what I think:
1. Your conditioned zones have surfaces that contact the unconditioned zones. So there is heat transfer between them.
2. If your unconditioned zone has a big opening to the outside, then it is safe to assume that this space will have a zone tempteture about the same as the outside air
3. If your set the infiltration sir change to lets da 6 ach this should do it. So the unconditioned zone will tend to the outside tempteture.
4. I think this will be a approximation of the system you described. And will estimate the energy transfer which in turn will be integrated by the Hvac of the conditioned space.
Hope this helps
Mn
From: fati_tilak@xxxxxxxxx [EnergyPlus_Support]
Sent: â??11/â??25/â??2015 19:14
To: EnergyPlus_Support@xxxxxxxxxxxxxxx
Subject: [EnergyPlus_Support] Re: Modeling horizontal opening in the floor of a building (related to outdoor condition) [3 Attachments]
Hi, Thank you very much for your reply .
In fact the opening in not an interzone surface. I mean It is not connected to another zone. please find attached file if it is possible.
my unconditioned zone is staircase and elevator place. I want to estimate the whole building energy consumption of one story house consisting of a residential part beside staircase and elevator part. for considering the effects of the staircase, I modeled this building with 2 zones: 1- conditioned zone(residential part of this house, as a thermal zone with HVAC and internal gains) and 2- unconditioned zone (non-residential part including staircase and elevator- a zone without any HVAC but with internal gain from light).
this unconditioned zone has a very large horizontal opening in its floor which is encountered outdoor air condition.
for understanding the shape of the building I attache 3 picture to this Email. Please find them if it helps.
thanks in advance for your time and help.
Best,
Tilak
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Posted by: fati tilak <fati_tilak@xxxxxxxxx>
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