Re: [EnergyPlus_Support] Re: Combiining systems to manage zone temperature

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

Reporting the mass flow rates for the baseboard heater revealed that the mass 
flow rate was maxed out for most of the day.  The baseboard model requires 
adeqaute water flow to support the larger UA.  Increasing the baseboard water 
flow rate x10 (too extreme, I'm sure) results in the heating setpoint being 
maintained.  And the mass flow rates are varying every hour now, showing that 
the baseboard is modulating.

Mike


On 2 Mar 2006 at 19:57, Elmer Morrissey wrote:

> Hi Mike,
> 
> As I said before, i seperated the system from the building in order 
> to speed up analysis in order to debug it. In this test file, I am 
> getting the two working simultaneously however they do not achieve 
> the 16C setpoint set for the zone during the winter months? The temp 
> in the zone seems to come close but never achieve the setpoint. Can 
> you spot what is going on?
> 
> I've uploaded the file? it's in the problem submittals and its 
> called SF01Baseboard.idf
> 
> I am using an Irish weather file and the UA I've set for the 
> baseboard and the coil should have raised zone temperature 
> sufficiently?!
> 
> Kind regards and thanks in advance
> 
> -Elmer
> 
> 
> --- In EnergyPlus_Support@xxxxxxxxxxxxxxx, "Michael J. Witte" 
> <mjwitte@...> wrote:
> >
> > That should work.  Please upload the input file to the yahoo group 
> files area 
> > or send (zipped) to energyplus-support@...
> > 
> > Mike
> > 
> > On 28 Feb 2006 at 17:21, Elmer Morrissey wrote:
> > 
> > > Hi all,
> > > 
> > > I am having a problem with a system that takes fresh air (which 
> is 
> > > heated by a heating coil) and baseboard heaters to keep a zone 
> at a 
> > > particular temperature. 
> > > 
> > > It looks like
> > > 
> > > ZONE EQUIPMENT LIST,
> > >     zGrdPrivateDining Equipment,  
> > >     DIRECT AIR,              
> > >     zGrdPrivateDining Dir Air,  
> > >     1,                       
> > >     1,                       
> > >     BASEBOARD HEATER:Water:Convective,  
> > >     zGrdPrivateDining TH,              
> > >     2,                       
> > >     2;                 
> > > 
> > > Unfortunately, despite the fact that my zonal temperaturess are 
> > > never getting near the 20C setpoint, the baseboard heater and 
> air 
> > > system are never combining to increase the zone temp. 
> > > 
> > > The reason I am so confused is because the baseboard heaters in 
> > > other rooms are working fine when the are the only equipment 
> > > managing room temperatures.
> > > 
> > > Kind regards
> > > 
> > > -Elmer
> > > 
> > > 
> > > 
> > > 
> > > 
> > > 
> > > 
> > > 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.idf 
> and press the
> > > "search" button.
> > >  
> > > Yahoo! Groups Links
> > > 
> > > 
> > > 
> > >  
> > > 
> > > 
> > > 
> > > 
> > 
> > 
> > ========================================================
> > Michael J. Witte, GARD Analytics, Inc.
> > EnergyPlus Testing and Support      
> > EnergyPlus-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.idf 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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