[Bldg-sim] Bldg-sim] Modeling tool for daylight, Energy, Thermal comfort analysis

[ali hamada fakra]

Dear Prof. Haberl,

I apologize for the misunderstanding from me and wish you a very good  
day.

A. H. Fakra

Le 25 avr. 11 à 20:55, Jeff Haberl a écrit :

> Hamada,
>
> I did not mention nor comment on CODYRUN as I am not familiar with  
> this software.
>
> jeff
>
> 8=!  8=)  :=)  8=)  ;=)  8=)  8=(  8=)  8=()  8=)  8=|  8=)  :=')   
> 8=)8=?
>
> Jeff S. Haberl, Ph.D.,P.E., FASHRAE..............jhaberl at tamu.edu
>
> Professor 
> ............................................................Office  
> Ph: 979-845-6507
>
> Department of Architecture.............................Lab Ph: 
> 979-845-6065
>
> Energy Systems Laboratory.............................FAX:  
> 979-862-2457
>
> Texas A&M University.....................................77843-3581
>
> College Station, Texas, USA, 77843..................URL:www.esl.tamu.edu
>
> 8=/  8=)  :=)  8=)  ;=)  8=)  8=()  8=)  :=)  8=)  8=!  8=)  8=?  
> 8=)8=0
> From: ali hamada fakra [fakra at univ-reunion.fr]
> Sent: Monday, April 25, 2011 4:23 AM
> To: Jeff Haberl
> Cc: bldg-sim at lists.onebuilding.org
> Subject: Re: [Bldg-sim] Bldg-sim] Modeling tool for daylight,  
> Energy, Thermal comfort analysis
>
> Dear Prof. Haberl,
>
> Is that your remarks are addressed directlty to me ? is what I do  
> understand that you criticize the software CODYRUN ? If this is not  
> the case, I apologize to you for that question.
>
> best regards.
>
> A. H. Fakra
>
> Le 25 avr. 11 à 06:49, Jeff Haberl a écrit :
>
>> Hamada,
>>
>> Unfortunately, you've chosen the worst possible building for  
>> analysis. There are several reasons for this.
>>
>> First, there is no single U.S. tool that does an accurate analysis  
>> of what you are asking for. There are some that perform simplified  
>> analysis of most of the parameters you are looking for, but none do  
>> it all right (that I’m aware of). Some of the European codes are  
>> getting close, for example ESPr and/or IES/VE, but each has its  
>> limitations.
>>
>> To estimate the thermal analysis with Visual DOE (i.e., DOE-2.1e)  
>> or EQUEST (i.e., DOE-2.2) you’d need to have at least one zone that  
>> is conditioned in order to simulate conditions in an unconditioned  
>> space. So, although it is possible to perform such a simulation,  
>> you have to go to great lengths to do this with canned simulations  
>> such as DOE-2.1e and DOE-2.2. One successful project that did this  
>> for a Buddhist temple was done by Dr. Sreshthaputra, which you can  
>> read about in:
>>
>> Sreshthaputra, A., Haberl, J., Andrews, M. 2004. “Improving  
>> Building Design and Operation .of a Thai Buddhist Temple,” Energy  
>> and Buildings, Vol. 36, pp. 481-494.
>>
>> Or in his thesis:
>>
>> Atch Sreshthaputra, 2004. “Building Design and Operation for  
>> Improving Thermal Comfort in Naturally Ventilated Buildings in a  
>> Hot and Humid Climate,” Department of Architecture, Texas A&M  
>> University.
>>
>> In this work, which was calibrated to real data from the temple,  
>> Atch created a fictitious zone that did nothing, then proceeded to  
>> model the temple as a unconditioned zone, which worked with one  
>> exception that it did not handle the air flows. To get around this  
>> Atch ran CFD with a program that used a 3D model from the CHAM  
>> engine, then passed the airflows back to DOE-2 each hour to do the  
>> run, which calculated the dynamic heat transfer, then back to the  
>> CFD for the next hour’s airflow, etc., (taking 24 hours to simulate  
>> 24 hours on 2003ish Pentium, not exactly fast).
>>
>> Second, you can probably get an estimate of the daylighting using  
>> DOE-2.1e or DOE-2.2 that should be accurate for and sidelights if  
>> you know the internal geometry, including surface characteristics,  
>> since they use the split-flux method. More accurate daylighting  
>> simulations can be done with RADIANCE or annual simulations with  
>> DAYSIM, or perhaps one of the new annual variants of RADIANCE.
>>
>> Third, true calculations of thermal comfort would require CFD and a  
>> internal radiation network (should interior surfaces get hot or  
>> cold), which further complicate things.
>>
>> So, it can be done, but there are only a few efforts in the  
>> literature that give solid advice on how to do this, probably more  
>> as time goes on. Getting all this in one package is probably not  
>> there yet. Probably still a good topic for a Ph.D. thesis.
>>
>> Jeff
>>
>>
>> 8=!  8=)  :=)  8=)  ;=)  8=)  8=(  8=)  8=()  8=)  8=|  8=)  :=')   
>> 8=)8=?
>>
>> Jeff S. Haberl, Ph.D.,P.E., FASHRAE..............jhaberl at tamu.edu
>>
>> Professor 
>> ............................................................Office  
>> Ph: 979-845-6507
>>
>> Department of Architecture.............................Lab Ph: 
>> 979-845-6065
>>
>> Energy Systems Laboratory.............................FAX:  
>> 979-862-2457
>>
>> Texas A&M University.....................................77843-3581
>>
>> College Station, Texas, USA, 77843..................URL:www.esl.tamu.edu
>>
>> 8=/  8=)  :=)  8=)  ;=)  8=)  8=()  8=)  :=)  8=)  8=!  8=)  8=?  
>> 8=)8=0
>> From: bldg-sim-bounces at lists.onebuilding.org [bldg-sim-bounces at lists.onebuilding.org 
>> ] on behalf of ali hamada fakra [fakra at univ-reunion.fr]
>> Sent: Thursday, April 21, 2011 11:32 PM
>> To: bldg-sim at lists.onebuilding.org
>> Subject: [Bldg-sim] Bldg-sim] Modeling tool for daylight, Energy,  
>> Thermal comfort analysis
>>
>> Message: 2
>> Date: Thu, 21 Apr 2011 10:47:20 +0530 (IST)
>> From: Rathna Shree <rathnashreep at yahoo.in>
>> To: bldg <bldg-sim at lists.onebuilding.org>
>> Subject: [Bldg-sim] Modeling tool for daylight, Energy, Thermal
>> comfort analysis
>> Message-ID: <935834.21570.qm at web95906.mail.in.yahoo.com>
>> Content-Type: text/plain; charset="utf-8"
>>
>> Dear All,
>>
>> Can you please suggest the best modeling tool which has the  
>> capabilities to perform Daylight simulation, Thermal comfort  
>> analysis in non AC spaces of a building and Energy simulation.
>>
>> I am using dialux for daylight simulation, Visual Doe for Energy  
>> simulation and Transys for Thermal comfort analysis. I am inputting  
>> the same details thrice in different softwares. So is there any  
>> software which can perform all the 3 analysis in one go.
>>
>> Regards,
>> Rathnashree
>>
>>
>> ------------------------------------------------------------
>>
>> Hello Rathmashree,
>>
>> I suggest you use CODYRUN. Is a french software dedicated to both  
>> research and consulting firms. You can make the 3 studies (Energy  
>> simulation, Daylight and thermal confort).that you want at the same  
>> time. For more information about this software, you can write to   
>> Professor Harry Boyer (Founder of the software) to this mail : harry.boyer at univ-reunion.fr
>>
>> Best regards,
>>
>> PhD / Engineer A. H. Fakra
>>
>>
>>
>
>

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.onebuilding.org/pipermail/bldg-sim-onebuilding.org/attachments/20110426/219efcf4/attachment-0001.htm>