Re: [EnergyPlus_Support] Hot Water Loop Temperatures

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

My guess is that the hot water loop pump is running continuously and adding 
pump heat to the loop.  Check the pump controls on the chilled water loop, it 
may also be running continuosly, but in the chilled water loop, the chiller 
will come on to offset the pump heat.  You may wish to schedule the pump 
operation or change it to intermittent for both loops.

Mike


On 14 Jan 2008 at 18:34, anarui.oliveira wrote:

> When I add internal gains to may model, (which as a chilled and a hot 
> water loop, served by chiller and boiler, respectively), the 
> Temperatures at the inlet and outlet of the hot water loop (and 
> boiler), in a summer week, when the boiler is off (I checked!) start 
> rising steadily, well above the nominal boiler temperature and the zone 
> temperatures (even those of the uncontrolled zones).
> NO similar effect occurs in the chilled water loop, nor in the winter 
> nor in the summer.
> I can't see the relationship behind this effect and I'm worried it 
> reveals some problem with the modelling.
> Can anyone help me?
> 
> Thank you,
> Ana Rui
> 
> 
> 
> 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@xxxxxxxx





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