[EnergyPlus_Support] Re: Add upstream component to mixer

["hbn_pch" <hbn_pch@xxxxxxxxxxxx>]

Thanks for you response.As you said ,which component should i add to 
the upstream of the mixer for reheat/recool?Which component has its 
own built-in controllers?

  thanks
  pch
--- In EnergyPlus_Support@xxxxxxxxxxxxxxx, fred buhl <wfbuhl@...> 
wrote:
>
> Sorry - the program can not do what you would like it to do. The 
> Controller:Simple
> will only function in the main air loop; it does not work in the 
outside 
> air system. Components
> in the outside air stream must have their own built-in controllers 
to 
> control to a setpoint. Chilled
> and hot water coils do not have built-in control.
> 
> Fred Buhl
> 
> hbn_pch wrote:
> 
> >I want to recool/reheat the outside air(OA) to the specified 
setpoint 
> >temp(usually dewpoint temp for dehumidify in summer).So i add a 
cooling 
> >coil,a heating coil at upstrem of the OA mixer.The OA flow as 
follows:
> >   Outside Air--->Cooling Coil--->Heating Coil--->OA mixers
> >For OA temp control(inlet node of the oa mixer),i tried to add two 
> >simple controller to control the cooling/heating coil.After 
> >simulation,it seems ok and there is no serveres.But there is a 
orphaned 
> >branch exist.I check the values and find that the outside air 
> >VolFlowRate is 0.Meanwhile,the oa reheat/reheat coil are not sized 
in 
> >*.eio file and the water inlet MassFlowRate is 0.I check the 
i/o,and it 
> >said i can add upstream compent for mixer.I don't know whether my 
setup 
> >for whole system is correct.
> >
> >  I've upload the file named 'upstream component to mixer'.
> >  Look forward to your kind help.Thanks
> >
> >  PCH
> >
> >
> >
> >
> >
> >
> >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
> >
> >
> >
> > 
> >
> >
> >  
> >
>






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