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

["Ke Xu" <xukevin24@xxxxxxxxx>]

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?
Thanks.

-Ke  

--- 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}
>     43.3333333333334,        !- Rated Outlet Air Temperature {C}
>     0.5;                     !- Rated Ratio for Air and Water Convection
> 
> Controller:WaterCoil,
>     OS:Controller:WaterCoil 1,  !- Name
>     Temperature,             !- Control Variable
>     Normal,                  !- Action
>     Flow,                    !- Actuator Variable
>     PSZ_1:1 Supply Equipment Outlet Node,  !- Sensor Node Name
>     PSZ_1:1 HeatingCoilWaterInlet,  !- Actuator Node Name
>     Autosize,                !- Controller Convergence Tolerance {deltaC}
>     Autosize,                !- Maximum Actuated Flow {m3/s}
>     1e-007;                  !- Minimum Actuated Flow {m3/s}
> 
> SetpointManager:SingleZone:Heating,
>     SupAirTemp MngrCore_bottom,  !- Name
>     Temperature,             !- Control Variable
>     10.0,                    !- Minimum Supply Air Temperature {C}
>     43.3333344812747,        !- Maximum Supply Air Temperature {C}
>     Core_bottom,             !- Control Zone Name
>     Core_bottom Air Node,    !- Zone Node Name
>     Core_bottom Direct Air Inlet Node Name,  !- Zone Inlet Node Name
>     PSZ_1:1 Supply Equipment Outlet Node;  !- Setpoint Node or NodeList Name
>




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