Re: [EnergyPlus_Support] solar powered intermittent absorption refrigeration unit

["Michael J. Witte" <mjwitte@xxxxxxxx>]

Sorry, but this cannot be done with the current EnergyPlus absorption chiller.  
The best I can suggest is to report hourly solar hot water gains and chilled 
water loads and compute the results in a spreadsheet.  

Mike


On 22 Nov 2007 at 13:03, Ashfaque Ahmed Chowdhury wrote:

> Dear all,
> 
> I would like to model a solar powered intermittent absorption 
> refrigeration unit to justify the feasibility of the unit on solar 
> power.Is there any way so that I can connect the absorption 
> refrigeration unit directly with the solar collectors in EP? 
> 
> Warmest regards,
> Ashfaque
> 
> --- In EnergyPlus_Support@xxxxxxxxxxxxxxx, "Jun Calixihan" 
> <jcalixihan@...> wrote:
> >
> > 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
> > 
> >  
> > 
> >  
> > 
> >  
> > 
> > 
> > 
> > [Non-text portions of this message have been removed]
> >
> 
> 
> 
> 
> The primary EnergyPlus web site is found at:
> http://www.energyplus.gov
> 
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> 
> Attachments are not allowed -- please post any files to the appropriate folder
> in the Files area of the Support Web Site.
> 
> EnergyPlus Documentation is searchable.  Open EPlusMainMenu.pdf under the
> Documentation link and press the "search" button.
> 
> Yahoo! Groups Links
> 
> 
> 
> 
> 


========================================================
Michael J. Witte, GARD Analytics, Inc.
EnergyPlus Testing and Support      
EnergyPlus-Support@xxxxxxxx





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