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

Douglas Hittle hittle at colostate.edu
Sun Apr 24 20:01:01 PDT 2011

Did I miss something? I would have started with EnergyPlus.

On 4/24/11 8:49 PM, Jeff Haberl wrote:
> 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 <mailto:rathnashreep at yahoo.in>>
> To: bldg <bldg-sim at lists.onebuilding.org 
> <mailto: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 
> <mailto: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 <mailto:harry.boyer at univ-reunion.fr>
> Best regards,
> PhD / Engineer A. H. Fakra
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