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RE: [EnergyPlus_Support] Re: How to set up a Coil:Heating:Water object in a CAV system to controls?

The water coil controller works better when it uses the coil air outlet node for the sensor node.     


From: EnergyPlus_Support@xxxxxxxxxxxxxxx [mailto:EnergyPlus_Support@xxxxxxxxxxxxxxx] On Behalf Of Ke Xu
Sent: Friday, July 27, 2012 1:57 PM
To: EnergyPlus_Support@xxxxxxxxxxxxxxx
Subject: [EnergyPlus_Support] Re: How to set up a Coil:Heating:Water object in a CAV system to controls?



Still couldn't make it work. But Gas furnace will work, see those DOE-reference buildings. My understanding is that the setpointmanager:singlezone:heating is not designed to work with water heating coils in the air loop? anyone test it before?


--- In EnergyPlus_Support@xxxxxxxxxxxxxxx, "Ke Xu" <xukevin24@...> wrote:
> Dear all,
> I am simulating a constant air volume system with a hot-water heating coil in the air-loop, and I am trying to set up controls for coil to maintain supply air temperature set point calculated to maintain the zone temperature. the objects I am using include "Coil: Heating: Water", "Controller: WaterCoil" and "SetpointManager:SingZone:Heating". Somehow, it doesn't work as I expected, the zone temperature in winter time can't be maintained. Any help and comments are appreciated. Thanks in advance.
> --Ke
> Part of my model related with heating coil is shown below:
> Coil:Heating:Water,
> PSZ_1:1_HEATC, !- Name
> Always_On, !- Availability Schedule Name
> Autosize, !- U-Factor Times Area Value {W/K}
> Autosize, !- Maximum Water Flow Rate {m3/s}
> PSZ_1:1 HeatingCoilWaterInlet, !- Water Inlet Node Name
> PSZ_1:1 HeatingCoilWaterOutlet, !- Water Outlet Node Name
> PSZ_1:1_CoolC-PSZ_1:1_HeatCNode, !- Air Inlet Node Name
> PSZ_1:1_HeatC-PSZ_1:1_FanNode, !- Air Outlet Node Name
> UFactorTimesAreaAndDesignWaterFlowRate, !- Performance Input Method
> Autosize, !- Rated Capacity {W}
> 82.2222222222222, !- Rated Inlet Water Temperature {C}
> 12.7777781162733, !- Rated Inlet Air Temperature {C}
> 71.1111111111111, !- Rated Outlet Water Temperature {C}


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