[EnergyPlus_Support] Re: Two System combination

["love9787m" <love9787m@xxxxxxxxxxx>]

--- In EnergyPlus_Support@xxxxxxxxxxxxxxx, "Michael J. Witte" 
<mjwitte@...> wrote:
>Hi, Mike
I don't understand merging completely. Is that copy example file to 
my idf file? and I must run the simple-system  COMPACT HVAC 
simulation as you mentioned. What is the simple-system COMPACT HVAC? 
> The problem here is that COMPACT HVAC objects are still present in 
the idf 
> file.  If you want to merge files so that two systems are serving 
the same 
> zone, you must run the simple single-system COMPACT HVAC 
simulation and use the 
> expidf output file to do the merging.
> 
> In this case, the approach would be to run a simulation with only 
fan coil 
> units using COMPACT HVAC, then take the expidf output file and 
merge in the 
> DOAS system.
> 
> Your present input file can be fixed as follows:
> 
> 1.  Run it, as you have already, and you will get fatal errors.
> 
> 2.  Take the expidf output file and rename it to a new 
filename.idf.
> 
> 3.  This file has 3 instances of CONTROLLED ZONE EQUIP 
CONFIGURATION and ZONE 
> EQUIPMENT LIST for Zone 25.  Keep the ones named "25 Equipment" 
and delete the 
> others.
> 
> 4.  The file contains both a DIRECT AIR unit and a terminal reheat 
AIR 
> DISTRIBUTION UNIT.  Keep one of these and delete the others, 
depending on what 
> type of system the DOAS is.
> 
> 5.  Add the DOAS terminal unit to ZONE EQUIPMENT LIST "25 
Equipment" with 
> priority 1, and change the fan coil priorities to 2.
> 
> 6.  In the ZONE EQUIP CONFIGURATION object, you will also need to 
get the node 
> names adjusted.  The return air node name must match the inlet to 
the ZONE 
> MIXER for the DOAS, and the zone inlets must now be a NODE LIST 
name, and the 
> NODE LIST will need to contain both the DOAS supply inlet to the 
zone and the 
> fan coil supply inlet.
> 
> 7.  If you use DIRECT AIR for the DOAS terminal unit, you will 
also need to 
> delete the hot water reheat coil and it's branch.
> 
> 8.  After all of this, you may need to make some other 
adjustments, but this 
> should get you closer to the final goal.
> 
> Mike
> 
> 
> On 25 Apr 2007 at 11:20, love9787m wrote:
> 
> > Hello Mike
> > 
> > Now, I'm making a model served DOAS plus fancoil uint.
> > As your advice, merged the idf file with the DOAS description,
> > add the DIRECT AIR unit to ZONE EQUIPMENT LIST.
> > But This message showed below
> > 
> > CONTROLLED ZONE EQUIP CONFIGURATION Zone Name, duplicate name=25
> >    **   ~~~   ** ..only one Controlled Zone Equip Configuration 
per 
> > zone is allowed.
> >    ** Severe  ** CONTROLLED ZONE EQUIP CONFIGURATION List Name: 
Zone 
> > Equipment, duplicate name=ZONE25EQUIPMENT
> >    **   ~~~   ** ..another Controlled Zone is using that Zone 
Equipment 
> > List.
> > 
> > Ana What is the correct means of merging?
> > Please let me about problem.
> > 
> > Thanks in advance your support.
> > 
> > 
> > 
> > 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.
> > 
> > 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@...
>




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