Re: [EnergyPlus_Support] Problems with autosizing

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

Four things must be present for autosizing to work:

1.  At least two DESIGNDAY objects, one for a heating design day and one for a 
cooling design day.

2.  The RUN CONTROL flag for sizing must be set to "Yes".

3.  A ZONE SIZING object for each zone to be sized.  (For other HVAC system 
types, you would also need SYSTEM SIZING and PLANT SIZING objects.)

4.  "autosize" in place of capacities and flow rates as appropriate in the 
specific HVAC objects; in your case, in PURCHASED AIR.

Mike


On 3 May 2004, at 14:46, zhen tian wrote:

> Hi, Albeto,
> 
> In the "Design Objects", you have to set up every zone sizing. Not just in the
> "Run Control" Object.
> 
> David Tian
> 
> 
> 
> Alberto Hernandez Neto <ahneto@xxxxxx> wrote:
> Dear Sirs,
> 
> I was trying to use the purchased air option and I modified the example file
> PURCHASEAirAutosize. I checked a couple of times all the menus and it seemed to
> me that placed the right commands. Unfortunately , E+ did not finish the
> simulation and I got the following fatal error message:
> 
> For autosizing of PURCHASED AIR ARZONA01, a zone sizing run must be done.
> 
> I checked in the RunControl menu and I placed Yes for the option "do zone sizing
> ",as it is in the example file. What am I missing?
> 
> Thanks for any help.
> 
> Sincerely,
> 
> 
> 
> Alberto Hernandez Neto
> 
> 
> [Non-text portions of this message have been removed]
> 
> 
> 
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========================================================
Michael J. Witte, GARD Analytics, Inc.
EnergyPlus Testing and Support      
EnergyPlus-Support@xxxxxxxx



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