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[EnergyPlus_Support] Re:Re: Loop Setup error
Hi Mike
I have checked my loop setting according to your suggustion. Some of the errors are fixed.
But one serve error still remains.
I connect my water-to-water heat pump directly with a water heater. Then the branch is in
the supply side of my plant loop. E+ still tell me that the inlet node of my heat pump does
not find a matched outlet node. i am sure that the inlet node and outlet node of my heat
pump show up in the Idf file twice. I just can not undestand why the error shows up.
So I ask the question again: Can the water heater can be linked with a plant component
directly? Or Should the water heater be in a unique branch and work with other plant
components parallelly?
Thank you in advacne.
Charlie
--- In EnergyPlus_Support@xxxxxxxxxxxxxxx, "Michael J. Witte" <mjwitte@g...> wrote:
> Every pair of inlet/outlet nodes for a plant component must be listed on a
> branch. Every branch must be part of a branch list, and every branch list must
> be referenced by a plant loop or condenser loop. The error message below
> indicate that one of these conditions is not being met.
>
> To solve such errors:
>
> 1. use a text editor, copy one of the node names listed in the error message
> and past it into the search (or find) of the editor and search the idf file for
> occurences of this node name. It should appear at least twice, once in the
> component, and once in a branch.
>
> If the name does not appear twice, then there is a typo either in the component
> node name or the node name on the branch.
>
> 2. If the node name appears twice in the right places, then select the
> associated branch name and search the idf file this. Does the branch name
> appears on a branch list?
>
> 3. If that is OK, then select the branch list name and search for it. Does it
> appear in a loop object?
>
> In all of these searches, do not retype the name, but select it or copy/paste
> it, otherwise a typo may be overlooked. Fixing the connection errors should
> solve the svg drawing issue.
>
> Mike
>
>
> On 18 Aug 2005, at 2:49, energypluser wrote:
>
> > Hi Everyone
> >
> > I have some questions about the loop setup in E+
> >
> > 1.Is the water heater able to connect directly with a
> > cooling/heating plant in a loop?
> > 2. Can we locate the water heater in a plant loop branch to work
> > with other heating/cooling component parallelly rather than working
> > alone ?
> > 3. I link a heat pump heating to my water heater for the purpose of
> > modeling the heater as a thermal storage tank. I see the svg file.
> > It shows that my heat pump is in the condenser loop, but the water
> > heater loop doesn't have this component.And these warning and errors
> > shows up.
> >
> > ** Warning ** Potential Node Connection Error for object
> > HEATPUMP:WATERTOWATER HEATING, name=IHEATPUMP HEATING 2
> > ** ~~~ ** Node Types are still UNDEFINED -- See Branch/Node
> > Details file for further information
> > ** ~~~ ** Inlet Node : GSHPHEATING LOADSIDE INLET NODE 2
> > ** ~~~ ** Outlet Node: GSHPHEATING LOADSIDE OUTLET NODE 2
> > ** Warning ** Potential Node Connection Error for object WATER
> > HEATER:MIXED, name=IWATER TANK
> > ** ~~~ ** Node Types are still UNDEFINED -- See Branch/Node
> > Details file for further information
> > ** ~~~ ** Inlet Node : IWATER TANK USE SIDE INLET NODE
> > ** ~~~ ** Outlet Node: IWATER TANK USE SIDE OUTLET NODE
> > ** Warning ** Node Connection Error for object WATER
> > HEATER:MIXED, name=IWATER TANK
> > ** ~~~ ** Load Side Water Nodes not on any Branch or Parent
> > Object
> > ** ~~~ ** Inlet Node : IWATER TANK USE SIDE INLET NODE
> > ** ~~~ ** Outlet Node: IWATER TANK USE SIDE INLET NODE
> > ** Warning ** Node Connection Error for object
> > HEATPUMP:WATERTOWATER HEATING, name=IHEATPUMP HEATING 2
> > ** ~~~ ** Hot Water Nodes not on any Branch or Parent Object
> > ** ~~~ ** Inlet Node : GSHPHEATING LOADSIDE INLET NODE 2
> > ** ~~~ ** Outlet Node: GSHPHEATING LOADSIDE OUTLET NODE 2
> >
> > Please help me to fix it
> > Thank you in advance.
> >
> > Charlie
> >
> >
> >
> >
> >
> >
> > The primary EnergyPlus web site is found at:
> > http://www.energyplus.gov
> >
> > The group web site is:
> > http://groups.yahoo.com/group/EnergyPlus_Support/
> >
> > Attachments are not allowed -- please post any files to the appropriate folder
> > in the Files area of the Support Web Site.
> >
> > Yahoo! Groups Links
> >
> >
> >
> >
> >
> >
> >
> >
>
>
>
>
=======================================================
=
> Michael J. Witte, GARD Analytics, Inc.
> EnergyPlus Testing and Support
> EnergyPlus-Support@g...
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