[bldg-sim] Current state of software for natural ventilation

[Aizaz Aamir Samuel]

A tool to use for natural and mixed-mode ventilation studies that I have found
useful is the nodal model integrated with CFD available within ESP-r. The
algorithm allows nodal analysis of the whole building and CFD analysis of a
specific part of it so that both CFD and nodal model converge to the same solution.

-Aizaz

Quoting Matt Gangemi <mgangemi at WoodHarbinger.com>:

> How well does COMIS work for natural ventilation?  My understanding is
> that it's a nodal model and doesn't take the detailed room geometry into
> account (though my understanding is only based on a few hours of
> research).  Will a CFD model be advisable in addition in order to look
> at the boundary conditions?
> 
> 
> 
> > Drury.Crawley at EE.DOE.GOV
> >=20
> >=20
> > DesignBuilder, a full-featured GUI for EnergyPlus
> > was released earlier this week.  It can handle
> > the natural ventilation (COMIS) parts of EnergyPlus.
> > www.DesignBuilder.co.uk
> >=20
> > Mixed mode ventilation is planned for the April
> > release of EnergyPlus.
> >=20
> >=20
> >=20
> >=20
> >                       "Matt Gangemi"
> >=20
> > I'm interested in finding good software to use in designing for
> natural
> > ventilation.  By "good" I mean providing results accurate enough to
> use in
> > constructing functional buildings, while being minimally complex or
> > difficult to use (and yes, I'm aware that even the minima of this
> group
> > could suck up weeks/months of time) and yet still affordable.  I've
> > searched the archives for a good discussion regarding natural
> ventilation,
> > and although I found a good thread (
> > http://www.gard.com/ml/bldg-sim-archive/msg01276.html), it's a few
> years
> > old.
> >=20
> >=20
> > What software is preferred?  Has anyone here tried the COMIS
> capabilities
> > of EnergyPlus?  Is there a good interface to EnergyPlus yet?  (last
> time I
> > simulated a model was a few years ago, and I more or less worked with
> text
> > files)  Is combining ESP-r with a CFD model still the best solution,
> or is
> > there a better way?
> >=20
> 
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*****************************
Aizaz A Samuel
University of Strathclyde
Energy Systems Research Unit
James Weir Building
75 Montrose Street
Glasgow, UK
G1 1XJ
Tel +44 141 548 5765
Fax +44 141 552 5105
*****************************


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