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[EnergyPlus_Support] Re: Staging baseboard and reheat coil
Dear E+ Forum,
In further attempts to solve this problem, I removed the baseboard
completely .... and found that the reheat coils still do not operate.
The file now is very similar to the example file 5ZoneCostEst.idf.
I suspect that my problem in this file is the same as exists in the
baseboard file, but I still need help finding the problem. Thanks in
advance. (File uploaded shortly)
--- In EnergyPlus_Support@xxxxxxxxxxxxxxx, "JV Dirkes II" <jvd2pe@...>
wrote:
>
> Dear E+ Forum,
>
> I'm finally evaluating output for the model which I want the baseboard
> to act as the first stage of heating (reheat coil is the 2nd stage).
> The baseboard is operating, the reheat coil is not operating (zero
> flow), and the room is not reaching the setpoint temperature in the
> heating season.
>
> I'm using objects as shown below. May I have suggestions regarding
> what's incorrect, please?
>
> ZONE EQUIPMENT LIST,
> ZoneEqList_Floors 3thru5,!- Name
> BASEBOARD HEATER:WATER:CONVECTIVE, !- KEY--Zone Equipment Type 1
> BasebdWtr_Floors 3thru5, !- Type Name 1
> 1, !- Cooling Priority 1
> 1, !- Heating Priority 1
> AIR DISTRIBUTION UNIT, !- KEY--Zone Equipment Type 2
> AirDistUnit_Floors 3thru5, !- Type Name 2
> 2, !- Cooling Priority 2
> 2, !- Heating Priority 2
> ZONE EXHAUST FAN, !- KEY--Zone Equipment Type 3
> ZoneEF_Floors 3thru5, !- Type Name 3
> 3, !- Cooling Priority 3
> 3; !- Heating Priority 3
>
> AIR DISTRIBUTION UNIT,
> AirDistUnit_Floors 3thru5, !- Air Distribution Unit Name
> NodeIn_Zn_Floors 3thru5, !- Air Dist Unit Outlet Node Name
> SINGLE DUCT:VAV:REHEAT, !- KEY--System Component Type 1
> RhtCTRL_Floors 3thru5; !- Component Name 1
>
> SINGLE DUCT:VAV:REHEAT,
> RhtCTRL_Floors 3thru5, !- Name of System
> SchCpct_AlwaysOn, !- System Availability schedule
> NodeOut_VVDpr_Floors 3thru5, !- DAMPER Air Outlet Node
> NodeOut_ZnSpltr_Floors 3thru5, !- UNIT Air Inlet Node
> Autosize, !- Maximum air flow rate {m3/s}
> 0.3, !- Zone Minimum Air Flow Fraction
> NodeIn_RhtWtr_ParkingLobbies, !- Control node
> COIL:WATER:SIMPLEHEATING,!- Reheat Component Object
> RhtCoil_Floors 3thru5, !- Name of Reheat Component
> Autosize, !- Max Reheat Water Flow {m3/s}
> 0, !- Min Reheat Water Flow {m3/s}
> NodeIn_Zn_Floors 3thru5, !- UNIT Air Outlet Node
> 0.001, !- Convergence Tolerance
> NORMAL; !- Damper Heating Action
>
> COIL:Water:SimpleHeating,
> RhtCoil_Floors 3thru5, !- Coil Name
> SchCpct_HtgAvail_AH1, !- Available Schedule
> Autosize, !- UA of the Coil {W/K}
> Autosize, !- Max Water Flow Rate of Coil {m3/s}
> NodeIn_RhtWtr_Floors 3thru5, !- Coil_Water_Inlet_Node
> NodeOut_RhtWtr_Floors 3thru5, !- Coil_Water_Outlet_Node
> NodeOut_VVDpr_Floors 3thru5, !- Coil_Air_Inlet_Node
> NodeIn_Zn_Floors 3thru5, !- Coil_Air_Outlet_Node
> UA and Design Water Flow Rate, !- Coil Performance Input Method
> Autosize, !- Nominal Capacity {W}
> 82.2, !- Design Inlet Water Temperature {C}
> 12.8, !- Design Inlet Air Temperature {C}
> 65.6, !- Design Outlet Water Temperature {C}
> 40.6; !- Design Outlet Air Temperature {C}
>
>
>
>
> --- In EnergyPlus_Support@xxxxxxxxxxxxxxx, "JV Dirkes II" <jvd2pe@>
> wrote:
> >
> > Thanks, Matthew! I remember now about that prioritization within Zone
> > Equipment List; we'll see how it works for this situation.
> >
> > --- In EnergyPlus_Support@xxxxxxxxxxxxxxx, "Matthew Flannery"
> > <matthew.flannery@> wrote:
> > >
> > > Have you tried looking at your zone equipment list? This only
> works if
> > > you're out of compact mode. In this tab you define your zone
heating
> > > priority for reheat coils and baseboard heaters.
> > >
> > >
> > >
> > >
> > >
> > > !- =========== ALL OBJECTS IN CLASS: ZONE EQUIPMENT LIST
> ===========
> > >
> > >
> > >
> > > ZONE EQUIPMENT LIST,
> > >
> > > Zone_1 Equipment, !- Name
> > >
> > > AIR DISTRIBUTION UNIT, !- KEY--Zone Equipment Type 1
> > >
> > > Zone_1 Reheat Coil, !- Type Name 1
> > >
> > > 2, !- Cooling Priority 1
> > >
> > > 2, !- Heating Priority 1
> > >
> > > BASEBOARD HEATER:WATER:CONVECTIVE, !- KEY--Zone Equipment
Type 2
> > >
> > > Zone_1 Baseboard, !- Type Name 2
> > >
> > > 1, !- Cooling Priority 2
> > >
> > > 1; !- Heating Priority 2
> > >
> > >
> > >
> > >
> > >
> > > Matthew Flannery, LEED A.P.
> > >
> > > Mechanical Engineer
> > >
> > > Buro Happold Consulting Engineers, PC
> > > 100 Broadway
> > > New York, NY 10005
> > > USA
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > > ________________________________
> > >
> > > From: EnergyPlus_Support@xxxxxxxxxxxxxxx
> > > [mailto:EnergyPlus_Support@xxxxxxxxxxxxxxx] On Behalf Of JV
Dirkes II
> > > Sent: Sunday, April 27, 2008 8:02 PM
> > > To: EnergyPlus_Support@xxxxxxxxxxxxxxx
> > > Subject: [EnergyPlus_Support] Staging baseboard and reheat coil
> > >
> > >
> > >
> > > Dear E+ Forum,
> > >
> > > I'm trying to figure out how to make baseboard heating and a reheat
> > > coil act as Stage 1 and Stage 2 of the zone's heating. Stage 2 (the
> > > reheat coil) should stay off until the Baseboard (Stage 1) is at
full
> > > capacity.
> > >
> > > Thanks in advance.
> > >
> > >
> > >
> > >
> > >
> > > This message has been scanned by MailController -
> > www.MailController.altohiway.com
> > >
> > >
> > > [Non-text portions of this message have been removed]
> > >
> >
>
------------------------------------
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