[Bldg-sim] Natural Ventilation Modelling

chinfook at gmail.com chinfook at gmail.com
Thu May 19 05:00:04 PDT 2011


Hi Martin,

Can you please explain a little more what do you mean by "good result"?
I suppose you must have been benchmarked the result with another model?

Regards,
Chinfook

On , Martin Roy <martin.roy at mra.qc.ca> wrote:


> We did use LoopDa with good result and it is free at :

> http://www.bfrl.nist.gov/IAQanalysis/software/LOOPDAdownload1.htm


> We try Energy+ but it is hard to use and there is a lot of parameter to
> adjust.


> Martin




> At 12:00 18/05/2011, Francisco Massucci wrote:

> Hi Ömer,



> EnergyPlus has an module called airflow network, that works wich
> pressure nodes and ventillation pathways. It`s not a CFD but for the
> purpose you will use I think its even more appropriated than a CFD
> software. You can learn more about at:

> http://fsec.ucf.edu/en/publications/pdf/FSEC-PF-428-07.pdf



> Regards,

> Francisco Massucci


> 2011/5/17 Cheney
> chenyu73 at gmail.com>



> Hi Mimta,





> For natural ventilation. I will recommend IES VE. It has tow modules,
> MacroFlo and MicroFlo (CFD), which are able to address your specific
> requirements at different scales. I've used both modules quite often to
> solve particular ventilation (both natural and mechanical ventilation)
> issues. TAS and Energy Plus may be able to do the same thing but I've
> never used them for ventilation analysis.


> Regards,





> Cheney





> LinkedIN @

> http://ca.linkedin.com/pub/yu-cheney-chen/27/637/72b







> 2011/5/17 Ömer Moltay
> omoltay at mimtarch.com>



> Hi,



> We use eQuest for our energy models. We are now faced with a project
> where we would like to know the effect of stack-effect natural
> ventilation in a 5 storey building and how it can help us undersize the
> mechanical equipment, especially due to night cooling of the concrete
> structure. Further, we would like to use the same modelling for LEED
> compliance. eQuest seems insufficient for this. What is the recommended
> practice for this?



> Thanks,



> Omer Moltay, LEED AP, BREEAM Assessor


> Mimta Ltd.


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