I am not sure, but you will probably have to use the expidf for this. You would have to check to see how flexible the HVACTemplate objects are.
On 11/10/2011 11:53 AM, ntraughpee wrote:
All of this would need to be done in the expidf and not using the HVACTemplates, correct?
--- In EnergyPlus_Support@xxxxxxxxxxxxxxx, Richard Raustad <RRaustad@...> wrote:
>
> You should be using a Dual Set Point Thermostat and a separate
> SetpointManager for each coil. SetpointManager:SingleZone:Cooling for CC
> and SetpointManager:SingleZone:Heating for HC (or could use
> SetpointManager:MultiZone:Cooling;Average and
> SetpointManager:MultiZone:Heating;Average). If you have a draw through
> fan, you will need to store these SP's at nodes other than the CC/HC
> outlet node, and use a SetpointManager:MixedAir object to recalculate a
> new set point including fan heat and place these new SP's at the outlet
> of the CC and HC.
>
> On 11/10/2011 10:22 AM, ntraughpee wrote:
> >
> > PS: As I read it I was understanding that by using the
> > HVACTemplate:System:VAV and having no availability schedule for either
> > the HC/CC it would always be available when needed. Then I added in a
> > constant set point, however from looking at the node temperature
> > points in Results Viewer it is obvious that the HC/CC are operating
> > year long at a constant set point.
> >
> > The system itself should be putting out like 55 degree air in max
> > cooling, and 100 degree air for max heating. I have been trying to use
> > the OA Temperature reset but again the coils seem to never shut down.
> >
> > What am I missing?
> >
> > --- In EnergyPlus_Support@xxxxxxxxxxxxxxx
> > <mailto:EnergyPlus_Support%40yahoogroups.com>, "ntraughpee"
> > <matthew.sverre.anderson@> wrote:
> > >
> > > Hello Everybody, I have a question that likely (or at least
> > hopefully!) has an easy answer and I am simply too foolish to know it.
> > >
> > > So I have a building which I modeled as a VAV with no reheat, and no
> > preheat coil. I want the coils to operate as needed and simply ignore
> > any frost warnings. However, I currently have no schedule for either
> > since there will be many times during the fall/spring where we might
> > need to heat/cool during the same day or during the week.
> > >
> > > The problem I am currently having is that the heating/cooling coils
> > are operating year long at the same time. I want the HC to operate
> > when the building needs heating, the CC to operate when the building
> > needs cooling (neither to operate at the same time). Am I thinking
> > about this incorrectly?
> > >
> > > Also is there a way to implement a dead band above/below the set
> > point where the system is "satisfied" to prevent the system from
> > "slamming" on/off?
> > >
> >
> >
>
> --
> 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
>
-- 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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