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[EnergyPlus_Support] Re: AbsorbitionChiller
Thank you very much for your assistance...I'll correct my file and try again...I didn't now that on the supply inlet branch should hav only a pump...the others are absent-minded mistakes...
thank you very much...
goodbye
Giovanni
--- In EnergyPlus_Support@xxxxxxxxxxxxxxx, "Griffith, Brent" <brent.griffith@...> wrote:
>
> I have had a look at your file posted to Helpserve. There are so many
> problems with this file I am surprised it runs at all, but not surprised
> it runs differently in V2.2.
>
>
>
> First, the geometry is inside out. You have chosen UpperLeftCorner, and
> CounterClockWise, but then entered the surface vertex data in clockwise
> order. Your zone loads are going to be totally wrong.
>
>
>
> One problem is that the supply side "Riscaldamento supply ingresso"
> branch has too much equipment on it. The first branch on the supply
> side of a plant loop should have only a pump. Yours has pump,
> waterheater, and a pipe. You need to rearrange this loop to have just
> the pump on the supply side inlet, then the water heater with a bypass
> around it, and then boiler on a single flow branch after the water
> heater.
>
>
>
> The problem with the node temperature results after the CHP are likely
> because your bypass branch has control type "passive" when it should be
> "Bypass."
>
>
>
> The branch "Motore demand WH" for the water heater's source side needs
> to have "ACTIVE" branch control so it can make flow requests.
>
>
>
>
>
>
>
> ________________________________
>
> From: EnergyPlus_Support@xxxxxxxxxxxxxxx
> [mailto:EnergyPlus_Support@xxxxxxxxxxxxxxx] On Behalf Of
> giovanni.matarrese
> Sent: Monday, May 18, 2009 7:49 AM
> To: EnergyPlus_Support@xxxxxxxxxxxxxxx
> Subject: [EnergyPlus_Support] Re: AbsorbitionChiller
>
>
>
>
>
>
>
>
> thank you for your answer,
> it's true, I'm using the V2.2 for my simulation because, as I told in a
> previous post and in a submitted ticket to the helpdesk support, the
> same file that works well in V2.2, exported in V3 and later doesn't work
> as in the V2.2 and it gives bad results!
> I noted that the absorbition chiller in V3 has generator inlet and
> outlet nodes fields, but to use the new version I first need to solve
> the problem about the microCHP model that in the V3 doesn't work well...
> can you help me about it if I send you my file in V2.2?
>
> --- In EnergyPlus_Support@xxxxxxxxxxxxxxx
> <mailto:EnergyPlus_Support%40yahoogroups.com> , Richard Raustad
> <RRaustad@> wrote:
> >
> > Prior to V3.0, the absorption chiller does not use an actual loop, the
>
> > model assumes steam and the amount of steam used is available through
> > report variables Chiller Steam Consumption Rate and Chiller Steam
> > Consumption. For V3.0 and later, a hot water or steam loop MAY be used
>
> > to regenerate the absorption cycle but the use of an actual loop is
> > optional. Note that the example file (V3.0 and later shown here)
> leaves
> > the generator node names blank which means a steam loop is assumed. If
>
> > you are using a version prior to V3.0, you must upgrade to the latest
> > version in order to connect a steam or hot water loop to the
> absorption
> > chiller. See the Input Output and Engineering Reference for more
> details.
> >
> > Chiller:Absorption,
> > <snip>
> > , !- Generator Inlet Node Name
> > , !- Generator Outlet Node Name
> > VARIABLEFLOW; !- Chiller Flow Mode
> >
> >
> >
> > In order to better serve you, a helpdesk system has been set up for
> > managing EnergyPlus user support requests. The helpdesk system
> includes
> > a download area, a knowledge base and troubleshooting area.
> >
> > To submit new support requests (tickets) or search the knowledge base,
>
> > please go to http://energyplus.helpserve.com
> <http://energyplus.helpserve.com>
> > <http://energyplus.helpserve.com <http://energyplus.helpserve.com> >
> >
> > You may also submit new tickets and reply to tickets via e-mail at
> > EnergyPlus-Support@ <mailto:EnergyPlus-Support%40gard.com> This
> > address has been linked to the helpdesk since early May 2008.
> >
> > EnergyPlus_Support@xxxxxxxxxxxxxxx
> <mailto:EnergyPlus_Support%40yahoogroups.com>
> > <mailto:EnergyPlus_Support%40yahoogroups.com> will now be primarily a
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> >
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> >
> > ** If you have an unresolved issue which was posted to the yahoo
> group,
> > please resubmit your request to EnergyPlus-Support@
> > <mailto:EnergyPlus-Support%40gard.com> Please include any replies to
> > date and attach input files as needed.
> >
> > giovanni.matarrese wrote:
> > >
> > >
> > > Hi,
> > > I want to integrate my plant with a microCHP with an absorbition
> > > chiller to make air conditioning in summer.
> > > I looked at the example file"AbsorbitionChiller", but I don't
> > > understand were the chiller takes heat for its functioning, in fanct
>
> > > the chiller is only linked to the condenser loop and not to the
> > > heating loop.
> > > how can I link the thermal power producted by the microchp to the
> > > absorbition chiller?
> > > thank you.
> > >
> > > Giovanni
> > >
> > >
> >
> > --
> > 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
> >
>
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