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Re: [EnergyPlus_Support] Re: model "Dry cooler" and "run-around heat recovery" in EnergyPlus?
I didn't quite understand what you meant by:
"A mixture of water and glycol is circulated through the coil and fed to
the units."
I based my response on this statement:
"This system consists of a recovery coil in the exhaust air stream
connected to a preheat coil in the outside air stream. A pump circulates
a water and glycol solution between the two coils."
So if you mean that half of the HX is in the exhaust air stream, the
other half of the HX is in the OA stream and a pump pushes fluid between
these halves, then all you need is the generic HX.
If you mean something else, then please provide more information (or a
manufacturers web site).
tjutw wrote:
>
> Hi Richard,
>
> Thanks a lot.
> I will model the runaround heat recovery unit by using
> "HeatExchanger:AirToAir:Generic model".
> What model should be used for the dry cooler?
>
> Thanks,
>
> Tj Ywh
>
> --- In EnergyPlus_Support@xxxxxxxxxxxxxxx
> <mailto:EnergyPlus_Support%40yahoogroups.com>, Richard Raustad
> <RRaustad@...> wrote:
> >
> > Use the HeatExchanger:AirToAir:FlatPlate or
> > HeatExchanger:AirToAir:Generic models to simulate this type of heat
> > recovery unit. If the generic model is used, set the latent
> > effectiveness values to 0. Use the nominal electric power input to
> > simulate pump power.
> >
> > tjutw wrote:
> > >
> > > Hi all,
> > >
> > > I want to model the dry cooler and run-around closed loop heat
> > > recovery unit using EnergyPlus. The following are simple descriptions
> > > about the two units.
> > >
> > > Dry cooler is a free-standing cooler coil over which outside air is
> > > blown by a fan. A mixture of water and glycol is circulated through
> > > the coil and fed to the units. In this system, there are no cooling
> > > tower and compressor chillers.
> > >
> > > This system consists of a recovery coil in the exhaust air stream
> > > connected to a preheat coil in the outside air stream. A pump
> > > circulates a water and glycol solution between the two coils.
> > >
> > > Would you please give me some advice how to simulate them?
> > >
> > > Thanks,
> > >
> > > Tj Ywh
> > >
> > >
> >
> > --
> > Richard A. Raustad
> > Senior Research Engineer
> > Florida Solar Energy Center
> > University of Central Florida
> > 1679 Clearlake Road
> > Cocoa, FL 32922-5703
> > Phone: (321) 638-1454
> > Fax: (321) 638-1439 or 1010
> > Visit our web site at: http://www.fsec.ucf.edu <http://www.fsec.ucf.edu>
> >
> > UCF - From Promise to Prominence: Celebrating 40 Years
> >
>
>
--
Richard A. Raustad
Senior Research Engineer
Florida Solar Energy Center
University of Central Florida
1679 Clearlake Road
Cocoa, FL 32922-5703
Phone: (321) 638-1454
Fax: (321) 638-1439 or 1010
Visit our web site at: http://www.fsec.ucf.edu
UCF - From Promise to Prominence: Celebrating 40 Years
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