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Removing bypass in a loop to convert to series arrangement

asked 2020-06-07 21:40:49 -0500

Antash's avatar

updated 2020-06-08 13:19:22 -0500

Hi Everyone, I am working off the example file on ground heat exchangers (GSHP-GLHE). I have made modifications to remove the bypass in the condenser supply side loop so that its a simple series arrangement with: 1) Constant speed pump 2) Ground Heat Exchanger But I get the following error. If a loop does not have any mixers or splitters does EnergyPlus still need a Connector list? If so what should I specify?

Program Version,EnergyPlus, Version 9.3.0-baff08990c, YMD=2020.06.07 19:39,
** Severe  ** <root>[CondenserLoop][Condenser Loop] - Missing required property 'condenser_side_connector_list_name'.
**  Fatal  ** Errors occurred on processing input file. Preceding condition(s) cause termination.
...Summary of Errors that led to program termination:
..... Reference severe error count=1
..... Last severe error=<root>[CondenserLoop][Condenser Loop] - Missing required property 'condenser_side_connector_list_name'.
************* Warning:  Node connection errors not checked - most system input has not been read (see previous warning).
************* Fatal error -- final processing.  Program exited before simulations began.  See previous error messages.
************* EnergyPlus Warmup Error Summary. During Warmup: 0 Warning; 0 Severe Errors.
************* EnergyPlus Sizing Error Summary. During Sizing: 0 Warning; 0 Severe Errors.
************* EnergyPlus Terminated--Fatal Error Detected. 0 Warning; 1 Severe Errors; Elapsed Time=00hr 00min  0.23sec


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answered 2020-06-08 17:12:20 -0500

There should be a ConnectorList (accordinglyConnector:Splitter and Connector:Mixer) object in every half-loop of plant loops whether you actually need them or not. It is how energyplus recognize your plant's configuration.

If you added these objects and still get an error, I think you might need to add a bypass branch with adiabatic pipe in supply half-loop of condenser loop. The thing is energyplus enforce you to have a bypass branch parallel with every active component.

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Asked: 2020-06-07 21:40:49 -0500

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Last updated: Jun 08 '20