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Re: [EnergyPlus_Support] no differences between results in PCM and reference



salam man Dr. nistam :))
mishe ybar dige bnvisid chi mikhayn motevaje nashodam

From: Hamed Hamed <hamed0890154031@xxxxxxxxx>
To: ltr <EnergyPlus_Support@xxxxxxxxxxxxxxx>
Sent: Wednesday, March 7, 2012 6:32 PM
Subject: Re: [EnergyPlus_Support] no differences between results in PCM and reference

 
سÙ?اÙ? دکتر
خستÙ? Ù?باشÛ?د
Ù?Ù? حاÙ?د Ù?صÙ?Ø­Û? Ù?ستÙ?  Ø¯Ø§Ù?شجÙ?Û? Ù?کاÙ?Û?Ú© سÛ?اÙ?ات دربÛ?رجÙ?د.
پرÙ?Ú?Ù?Ù? Û? کارشÙ?اسÛ? Ù?Ù? ترجÙ?Ù? Û?help Ù?رÙ? اÙ?زار energyplus Ù?ست Ù? در Ù?Ù?اÛ?ت باÛ?د با اÙ? Û?Ú© پرÙ?Ú?Ù? اÙ?جاÙ? دÙ?Ù?
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با تشکر
From: Mohammad Kheradmand <mohammadkheradmand@xxxxxxxxx>
To: "EnergyPlus_Support@xxxxxxxxxxxxxxx" <EnergyPlus_Support@xxxxxxxxxxxxxxx>
Sent: Tuesday, 6 March 2012, 1:27:15
Subject: Re: [EnergyPlus_Support] no differences between results in PCM and reference

 
I did but, no changes. i don't have any convergence warning. but in both options ( partition layers symmetry and non symmetry) i got same result. 

From: CleanTech Analytics <jeremiah@xxxxxxxxxxxxxxxxxxxxxx>
To: EnergyPlus_Support@xxxxxxxxxxxxxxx
Sent: Monday, March 5, 2012 9:26 PM
Subject: Re: [EnergyPlus_Support] no differences between results in PCM and reference

 
Mohammad,

 It may be the construction internal source object I added to your file.
This is working for my model, but that may be because I have mine setup with PCM on one side allowing for thermal movement in one direction, while you have PCM on two sides. What I expect is the issue is that your dual sided PCM's are canceling each other out. Try going back to a standard construction, with your dual wall PCM construction layers,  and the .5C/min DSC tested Q21 temperature enthalpy BioPCM materials property phase change object data I provided you. 

Question, did you have any convergence warnings?

Keep me posted, and thanks


On Mon, Mar 5, 2012 at 1:09 PM, Mohammad Kheradmand <mohammadkheradmand@xxxxxxxxx> wrote:
 
in my case, we have two test cells which we created a partition in middle of it (one with incorporation PCM and another without PCM), now i try to simulate these two test cell for verifying experimental results, also we put a data logger to measure ambient temperature of cells in two direction (north and south surfaces).

i don't know, where is wrong in .idf file , maybe because of enthalpy-temperature (i put your example file data).

i try to check other parameters again.
regards

From: CleanTech Analytics <jeremiah@xxxxxxxxxxxxxxxxxxxxxx>
To: EnergyPlus_Support@xxxxxxxxxxxxxxx
Sent: Monday, March 5, 2012 8:07 PM

Subject: Re: [EnergyPlus_Support] no differences between results in PCM and reference

 
Put insulation, or nothing in place of brick is what I would do, as most buildings are "light weight" and would not have such brick.

I would say you are getting close.

Could you please describe in detail the goals of your project?

Thanks

On Mon, Mar 5, 2012 at 12:02 PM, Mohammad Kheradmand <mohammadkheradmand@xxxxxxxxx> wrote:
 
I tried, i got reasonable result between reference and PCM almost 3 -4 degree also i put brick again in partition and result was same as before i did(no difference), but the differences between experimental and simulation is too high (almost 10-15 degree), what can i do? 

Sent: Monday, March 5, 2012 7:13 PM

Subject: Re: [EnergyPlus_Support] no differences between results in PCM and reference

 
Try this and let me know..

On Mon, Mar 5, 2012 at 11:02 AM, Mohammad Kheradmand <mohammadkheradmand@xxxxxxxxx> wrote:
 
I try to retrify experimental result, i cant move to outer wall, so it is necessary to be on outer layer of partition, my weather file refer to 2005 i don't  know, how can i convert to 2011 as a new one? also the thickness is fix .

thanks 

From: CleanTech Analytics <jeremiah@xxxxxxxxxxxxxxxxxxxxxx>
To: EnergyPlus_Support@xxxxxxxxxxxxxxx
Sent: Monday, March 5, 2012 6:28 PM
Subject: Re: [EnergyPlus_Support] no differences between results in PCM and reference

 
Try moving your PCM to an outer wall, or changing your weather file, or changing the thickness of your PCM.
Also make a spreadsheet that compares the two in terms of percent, as small savings in kWh for a single day may be bigger savings then it seems by just looking at kWh.

Let me know if you still have the issue after experiments..

On Mon, Mar 5, 2012 at 9:50 AM, Mohammad Kheradmand <mohammadkheradmand@xxxxxxxxx> wrote:
 
Could you please help me , what is wrong ? why i have, same results between two simulation?

regards



--
Jeremiah D. Crossett
CleanTech Analytics
This document may contain valuable information proprietary to CleanTech Analytics which is private and confidential. It may not be shared, copied, stored or transmitted in any form without the prior written consent of CleanTech Analytics






--
Jeremiah D. Crossett
CleanTech Analytics
This document may contain valuable information proprietary to CleanTech Analytics which is private and confidential. It may not be shared, copied, stored or transmitted in any form without the prior written consent of CleanTech Analytics






--
Jeremiah D. Crossett
CleanTech Analytics
This document may contain valuable information proprietary to CleanTech Analytics which is private and confidential. It may not be shared, copied, stored or transmitted in any form without the prior written consent of CleanTech Analytics






--
Jeremiah D. Crossett
CleanTech Analytics
503-688-8951
This document may contain valuable information proprietary to CleanTech Analytics which is private and confidential. It may not be shared, copied, stored or transmitted in any form without the prior written consent of CleanTech Analytics









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