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Re: [EnergyPlus_Support] Loop Setup error
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@xxxxxxxx
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