Re: [EnergyPlus_Support] Heatpump W-2-W Model & Node fatal Error!

Thank you Karen.

About your second remark:

The

Heating --> Heatpump:WaterToWater:EquationFit:Heating
Cooling --> Heatpump:WaterToWater:EquationFit:Cooling

can have different source inlet & outlet right? Does this also mean that each HP side can be connected to different Condenser Demand Loop!?

This is what I have done! So, 2 CondenserLoops have been generated for my model compared to the E+ example. This is indeed the difference.

It may be required to have one single Condenser Loop when using this kind of HP objects? In that case I need to connect the source side of the HPs through the condenser demand side. Is this correct?

regards,

Ehsan

From: Karen Walkerman <kwalkerman@xxxxxxxxx>
To: "EnergyPlus_Support@xxxxxxxxxxxxxxx" <EnergyPlus_Support@xxxxxxxxxxxxxxx>
Sent: Thu, March 17, 2011 1:30:31 PM
Subject: Re: [EnergyPlus_Support] Heatpump W-2-W Model & Node fatal Error!

Hi Ehsan,

You have quite a few node errors, so I would go back through the
branches and double check that all your node names are appropriate.
The other thing that comes to mind is that for this object, the
example file and help files both reference only one condenser loop,
which serves the source side of the both w2w heat pumps. Remember
that the two objects:

Heating --> Heatpump:WaterToWater:EquationFit:Heating
Cooling --> Heatpump:WaterToWater:EquationFit:Cooling

Represent the two modes of one piece of equipment in real life. Check
the example files for details on describing the condenser loop nodes.

Good Luck!

--
Karen

On Thursday, March 17, 2011, Ehsan Baharvand <ebaharvand@xxxxxxxxx> wrote:
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> Dear all,
>
> I have the following problem when running the simulation. See below .err file! I hope you can help me with this.
>
> System information to model
>
> 1 X Air Loop
> - Central AirHandlingUnit
>
> 2 X Plant Loops:
> - Heating --> Heatpump:WaterToWater:EquationFit:Heating
> - Cooling --> Heatpump:WaterToWater:EquationFit:Cooling
>
> 2 X Condenser Loops:
> - GroundHeatExchanger:Pond connected to the SourceSide of heating plant loop
> - GroundHeatExchanger:Pond connected to the SourceSide of cooling plant loop
>
> Problem
> I have checked the nodes, connectors, splitters en mixer arrangement and plant and condenser plant loop object. However, the simulation still ends up with node error comments!
>
> Question
> Possibliy Í'm forgetting something.
> Is there a limit on the length of the node names within EnergyPlus? Or, do the node names require to have sort of known structure?
> Or, you may think the problem is something else?
>
> I hope you can help me further with this. Thanks in advance.
>
>
> Best regards,
> Ehsan
>
>    ************* Testing Individual Branch Integrity
>    ************* All Branches passed integrity testing
>    ************* Testing Individual Supply Air Path Integrity
>    ************* All Supply Air Paths passed integrity testing
>    ************* Testing Individual Return Air Path Integrity
>    ************* All Return Air Paths passed integrity testing
>    ** Severe ** Node Connection Error, Node="NOTPURCHASED COOLING INLET NODE", Inlet node did not find an appropriate matching "outlet" node.
>    **   ~~~   ** If this is an outdoor air inlet node, it must be listed in an OutdoorAir:Node or OutdoorAir:NodeList object.
>    **   ~~~   ** Reference Object=BRANCH, Name=CW CND DISTRICTCOOLING SUPPLY BRANCH
>    ** Severe ** Node Connection Error, Node="CW CND SUPPLY SIDE BYPASS THE
> INLET NODE", Inlet node did not find an appropriate matching "outlet" node.
>    **   ~~~   ** If this is an outdoor air inlet node, it must be listed in an OutdoorAir:Node or OutdoorAir:NodeList object.
>    **   ~~~   ** Reference Object=BRANCH, Name=CW CND SUPPLY SIDE BYPASS BRANCH
>    ** Severe ** Node Connection Error, Node="CW CND SUPPLY SIDE OUTLET PIPE THE INLET NODE", Inlet node did not find an appropriate matching "outlet" node.
>    **   ~~~   ** If this is an outdoor air inlet node, it must be listed in an OutdoorAir:Node or OutdoorAir:NodeList object.
>    **   ~~~   ** Reference Object=BRANCH, Name=CW CND SUPPLY SIDE OUTLET PIPE BRANCH
>    ** Severe ** Node Connection Error, Node="HP CW SOURCESIDE INLET NODE", Inlet node did not find an appropriate matching "outlet"
> node.
>    **   ~~~   ** If this is an outdoor air inlet node, it must be listed in an OutdoorAir:Node or OutdoorAir:NodeList object.
>    **   ~~~   ** Reference Object=BRANCH, Name=CW HPCOOLING SOURCESIDE BRANCH
>    ** Severe ** Node Connection Error, Node="CW CND DEMAND SIDE BYPASS THE INLET NODE", Inlet node did not find an appropriate matching "outlet" node.
>    **   ~~~   ** If this is an outdoor air inlet node, it must be listed in an OutdoorAir:Node or OutdoorAir:NodeList object.
>    **   ~~~   ** Reference Object=BRANCH, Name=CW CND DEMAND SIDE BYPASS BRANCH
>    ** Severe ** Node Connection Error, Node="CW CND DEMAND SIDE OUTLET PIPE THE INLET NODE", Inlet node did not find an appropriate matching "outlet" node.
>    **   ~~~   ** If this is an outdoor
> air inlet node, it must be listed in an OutdoorAir:Node or OutdoorAir:NodeList object.
>    **   ~~~   ** Reference Object=BRANCH, Name=CW CND DEMAND SIDE OUTLET PIPE BRANCH
>    ** Severe ** Node Connection Error, Node="NOTPURCHASED HEATING INLET NODE", Inlet node did not find an appropriate matching "outlet" node.
>    **   ~~~   ** If this is an outdoor air inlet node, it must be listed in an OutdoorAir:Node or OutdoorAir:NodeList object.
>    **   ~~~   ** Reference Object=BRANCH, Name=HW CND DISTRICTCOOLING SUPPLY BRANCH
>    ** Severe ** Node Connection Error, Node="HW CND SUPPLY SIDE BYPASS THE INLET NODE", Inlet node did not find an appropriate matching "outlet" node.
>    **   ~~~   ** If this is an outdoor air inlet node, it must be listed in an OutdoorAir:Node or OutdoorAir:NodeList
> object.
>    **   ~~~   ** Reference Object=BRANCH, Name=HW CND SUPPLY SIDE BYPASS BRANCH
>    ** Severe ** Node Connection Error, Node="HW CND SUPPLY SIDE OUTLET PIPE THE INLET NODE", Inlet node did not find an appropriate matching "outlet" node.
>    **   ~~~   ** If this is an outdoor air inlet node, it must be listed in an OutdoorAir:Node or OutdoorAir:NodeList object.
>    **   ~~~   ** Reference Object=BRANCH, Name=HW CND SUPPLY SIDE OUTLET PIPE BRANCH
>    ** Severe ** Node Connection Error, Node="HP HW SOURCESIDE INLET NODE", Inlet node did not find an appropriate matching "outlet" node.
>    **   ~~~   ** If this is an outdoor air inlet node, it must be listed in an OutdoorAir:Node or OutdoorAir:NodeList object.
>    **   ~~~   ** Reference Object=BRANCH,
> Name=HW HPHEATING SOURCESIDE BRANCH
>    ** Severe ** Node Connection Error, Node="HW CND DEMAND SIDE BYPASS THE INLET NODE", Inlet node did not find an appropriate matching "outlet" node.
>    **   ~~~   ** If this is an outdoor air inlet node, it must be listed in an OutdoorAir:Node or OutdoorAir:NodeList object.
>    **   ~~~   ** Reference Object=BRANCH, Name=HW CND DEMAND SIDE BYPASS BRANCH
>    ** Severe ** Node Connection Error, Node="HW CND DEMAND SIDE OUTLET PIPE THE INLET NODE", Inlet node did not find an appropriate matching "outlet" node.
>    **   ~~~   ** If this is an outdoor air inlet node, it must be listed in an OutdoorAir:Node or OutdoorAir:NodeList object.
>    **   ~~~   ** Reference Object=BRANCH, Name=HW CND DEMAND SIDE OUTLET PIPE BRANCH
>    ** Severe **
> Node Connection Error, Node="HP CW LOADSIDE INLET NODE", Inlet node did not find an appropriate matching "outlet" node.
>    **   ~~~   ** If this is an outdoor air inlet node, it must be listed in an OutdoorAir:Node or OutdoorAir:NodeList object.
>    **   ~~~   ** Reference Object=BRANCH, Name=CW HPCOOLING SUPPLY BRANCH
>    ** Severe ** Node Connection Error, Node="CW SUPPLY SIDE BYPASS THE INLET NODE", Inlet node did not find an appropriate matching "outlet" node.
>    **   ~~~   ** If this is an outdoor air inlet node, it must be listed in an OutdoorAir:Node or OutdoorAir:NodeList object.
>    **   ~~~   ** Reference Object=BRANCH, Name=CW SUPPLY SIDE BYPASS BRANCH
>    ** Severe ** Node Connection Error, Node="CW SUPPLY SIDE OUTLET PIPE THE INLET NODE", Inlet node did not find an appropriate
> matching "outlet" node.
>    **   ~~~   ** If this is an outdoor air inlet node, it must be listed in an OutdoorAir:Node or OutdoorAir:NodeList object.
>    **   ~~~   ** Reference Object=BRANCH, Name=CW SUPPLY SIDE OUTLET PIPE BRANCH
>    ** Severe ** Node Connection Error, Node="AHU COOLING COIL CHW INLET", Inlet node did not find an appropriate matching "outlet" node.
>    **   ~~~   ** If this is an outdoor air inlet node, it must be listed in an OutdoorAir:Node or OutdoorAir:NodeList object.
>    **   ~~~   ** Reference Object=BRANCH, Name=AHU COOLING COIL CHW BRANCH
>    ** Severe ** Node Connection Error, Node="CW DEMAND SIDE BYPASS THE INLET NODE", Inlet node did not find an appropriate matching "outlet" node.
>    **   ~~~   ** If this is an outdoor air inlet
> node, it must be listed in an OutdoorAir:Node or OutdoorAir:NodeList object.
>    **   ~~~   ** Reference Object=BRANCH, Name=CW DEMAND SIDE BYPASS BRANCH
>    ** Severe ** Node Connection Error, Node="CW DEMAND SIDE OUTLET PIPE THE INLET NODE", Inlet node did not find an appropriate matching "outlet" node.
>    **   ~~~   ** If this is an outdoor air inlet node, it must be listed in an OutdoorAir:Node or OutdoorAir:NodeList object.
>    **   ~~~   ** Reference Object=BRANCH, Name=CW DEMAND SIDE OUTLET PIPE BRANCH
>    ** Severe ** Node Connection Error, Node="HP HW LOADSIDE INLET NODE", Inlet node did not find an appropriate matching "outlet" node.
>    **   ~~~   ** If this is an outdoor air inlet node, it must be listed in an OutdoorAir:Node or OutdoorAir:NodeList object.
> **   ~~~   ** Reference Object=BRANCH, Name=HW HPHEATING SUPPLY BRANCH
>    ** Severe ** Node Connection Error, Node="HW SUPPLY SIDE BYPASS THE INLET NODE", Inlet node did not find an appropriate matching "outlet" node.
>    **   ~~~   ** If this is an outdoor air inlet node, it must be listed in an OutdoorAir:Node or OutdoorAir:NodeList object.
>    **   ~~~   ** Reference Object=BRANCH, Name=HW SUPPLY SIDE BYPASS BRANCH
>    ** Severe ** Node Connection Error, Node="HW SUPPLY SIDE OUTLET PIPE THE INLET NODE", Inlet node did not find an appropriate matching "outlet" node.
>    **   ~~~   ** If this is an outdoor air inlet node, it must be listed in an OutdoorAir:Node or OutdoorAir:NodeList object.
>    **   ~~~   ** Reference Object=BRANCH, Name=HW SUPPLY SIDE OUTLET PIPE
> BRANCH
>    ** Severe ** Node Connection Error, Node="AHU HEATING COIL HW INLET", Inlet node did not find an appropriate matching "outlet" node.
>    **   ~~~   ** If this is an outdoor air inlet node, it must be listed in an OutdoorAir:Node or OutdoorAir:NodeList object.
>    **   ~~~   ** Reference Object=BRANCH, Name=AHU HEATING COIL HW BRANCH
>    ** Severe ** Node Connection Error, Node="HW DEMAND SIDE BYPASS THE INLET NODE", Inlet node did not find an appropriate matching "outlet" node.
>    **   ~~~   ** If this is an outdoor air inlet node, it must be listed in an OutdoorAir:Node or OutdoorAir:NodeList object.
>    **   ~~~   ** Reference Object=BRANCH, Name=HW DEMAND SIDE BYPASS BRANCH
>    ** Severe ** Node Connection Error, Node="HW DEMAND SIDE OUTLET PIPE THE INLET
> NODE", Inlet node did not find an appropriate matching "outlet" node.
>    **   ~~~   ** If this is an outdoor air inlet node, it must be listed in an OutdoorAir:Node or OutdoorAir:NodeList object.
>    **   ~~~   ** Reference Object=BRANCH, Name=HW DEMAND SIDE OUTLET PIPE BRANCH
>    ** Severe ** Node Connection Error, Node="AHU HEATING COIL HW INLET", Inlet node did not find an appropriate matching "outlet" node.
>    **   ~~~   ** If this is an outdoor air inlet node, it must be listed in an OutdoorAir:Node or OutdoorAir:NodeList object.
>    **   ~~~   ** Reference Object=COIL:HEATING:WATER, Name=AHU HEATING COIL
>    ** Severe ** Node Connection Error, Node="AHU COOLING COIL CHW INLET", Inlet node did not find an appropriate matching "outlet" node.
>    **
> ~~~   ** If this is an outdoor air inlet node, it must be listed in an OutdoorAir:Node or OutdoorAir:NodeList object.
>    **   ~~~   ** Reference Object=COIL:COOLING:WATER, Name=AHU COOLING COIL
>
>    ** Severe ** Same component name and type has differing Node Names.
>    **   ~~~   **    Component:    HEATPUMP:WATERTOWATER:EQUATIONFIT:COOLING, name=HPCOOLING
>    **   ~~~   **    Nodes, inlet: HP CW SOURCESIDE INLET NODE, outlet: HP CW SOURCESIDE OUTLET NODE
>    **   ~~~   ** & Nodes, inlet: HP CW LOADSIDE INLET NODE, outlet: HP CW LOADSIDE OUTLET NODE
>    **   ~~~   **    Node Types:   UNDEFINED & UNDEFINED
>    ** Severe ** Same component name and type has differing Node Names.
>    **   ~~~   **    Component:    HEATPUMP:WATERTOWATER:EQUATIONFIT:HEATING, name=HPHEATING
>    **   ~~~   **
> Nodes, inlet: HP HW SOURCESIDE INLET NODE, outlet: HP HW SOURCESIDE OUTLET NODE
>    **   ~~~   ** & Nodes, inlet: HP HW LOADSIDE INLET NODE, outlet: HP HW LOADSIDE OUTLET NODE
>    **   ~~~   **    Node Types:   UNDEFINED & UNDEFINED
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