[EnergyPlus_Support] Re: VRF warnings, Iteration limit exceeded calculating terminal unit part-load ratio

["JFCS" <jamo0312see@xxxxxxxxx>]

a buffer tank?? i am not familiar of this on energyplus? how can i include this in a model.. does you have the reference in energyplus on how to incorporate this? 

Thank you for the reply.

--- In EnergyPlus_Support@xxxxxxxxxxxxxxx, jeannieboef <jeannieboef@...> wrote:
>
> the equipment usually turns off at low load conditions. they don't  
> like ramping down that low. suggest using a buffer tank to take on  
> these conditions and switching the vrf unit off at low load conditions  
> and/or have it supply the buffer tank at normal capacities.
> 
> Sent from my iPhone
> 
> On 05.12.2012, at 03:58, "JFCS" <jamo0312see@...> wrote:
> 
> > I am concern about my VRF model, Specifically my cooling coil VRF  
> > DX...
> > its showing A LOT of warnings regarding Iteration limit and Part- 
> > load ratio as shown below...
> >
> > ** Warning ** ZoneHVAC:TerminalUnit:VariableRefrigerantFlow "FCU 1A-1"
> > ** ~~~ ** Iteration limit exceeded calculating terminal unit part- 
> > load ratio, maximum iterations = 500
> > ** ~~~ ** Part-load ratio returned = 5.270E-004 Environment=ORTIGAS  
> > AVE. GREENHILLS SAN JUAN CITY, at Simulation time=07/15 09:00 - 09:15
> > ** ~~~ ** Load requested = 1.10844E-012, Load delivered = 12.32182
> >
> > How can i solve this warning??
> >
> >
>



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