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RE: [EnergyPlus_Support] Absorption chiller model
Hello EnergyPlus Support!
Just want to confirm my findings on doing annual simulation on absorption
chillers in E+ for my modeling project. I tried several options to avoid
the zero volume flow rate in the chiller-condenser water loop (no clear
statement on this in the Input-Output reference and Engineering reference).
The one that worked is adding Purchased Cooling into the cooling supply side
branches. Is this finding correct? Does this mean that the Purchased
Cooling branch represent the purchased steam needed by the absorption
chiller?
Thanks for your help!
Jun
From: EnergyPlus_Support@xxxxxxxxxxxxxxx
[mailto:EnergyPlus_Support@xxxxxxxxxxxxxxx] On Behalf Of Jun Calixihan
Sent: Thursday, November 22, 2007 6:16 PM
To: EnergyPlus_Support@xxxxxxxxxxxxxxx
Subject: [EnergyPlus_Support] Absorption chiller model
Hi!
Need help identifying source of error in my model for absorption chiller.
Below is the error. I tried editing the condenser pump, chiller parameters,
equipment sizes, loop temperatures, etc. but can't seem to arrive at the
source of error. I uploaded the idf file named
AbsorptionChillerModified.idf
Thank you in advance!
Best Regards,
Jun
** Warning ** SizeCondDemandSide: Calculated Plant Sizing Design Volume Flow
Rate=[0.00] is too small. Set to 0.0
** ~~~ ** ..occurs for Condenser Loop=CHILLED WATER LOOP CONDENSER
WATER LOOP
** Warning ** SizeCondSupplySide: Calculated Plant Sizing Design Volume
Flow Rate=[0.00] is too small. Set to 0.0
** ~~~ ** ..occurs for Condenser Loop=CHILLED WATER LOOP CONDENSER
WATER LOOP
** Warning ** SizePump: Calculated Pump Nominal Volume Flow Rate=[0.00]
is too small. Set to 0.0
** ~~~ ** ..occurs for Pump=CHILLED WATER LOOP CNDW SUPPLY PUMP
** Warning ** Check input. Pump nominal power or motor efficiency is set
to 0, for pump=CHILLED WATER LOOP CNDW SUPPLY PUMP
** Warning ** Check input. Pump nominal volumetric flow rate is set or
calculated = 0, for pump=CHILLED WATER LOOP CNDW SUPPLY PUMP
** Severe ** CalcBLASTAbsorberModel: Condenser flow = 0, for
Absorber=CHILLER
** Fatal ** Program Terminates due to previous error condition.
...Summary of Errors that led to program termination:
..... Reference severe error count=1
..... Last severe error=CalcBLASTAbsorberModel: Condenser flow = 0, for
Absorber=CHILLER
************* Fatal error -- final processing. More error messages may
appear.
************* 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
************* No node connection errors were found.
************* EnergyPlus Terminated--Fatal Error Detected. 8 Warning; 1
Severe Errors; Elapsed Time=00hr 00min 2.91sec
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