[EnergyPlus_Support] Re: Solution to constant branch pumps, when bypass is not possible

["ecoeficientees" <ecoeficiente@xxxxxxxxx>]

What for? My message is not related to an specific idf file.

--- In EnergyPlus_Support@xxxxxxxxxxxxxxx, Mário <mneves32@...> wrote:
>
> Hello,
> 
> Can YOu upload the idf?
> 
> MN
> 
> --- In EnergyPlus_Support@xxxxxxxxxxxxxxx, "ecoeficientees" <ecoeficiente@> wrote:
> >
> > I am using a configuration for branch pumps when in the real HVAC system
> > they are constant flow pumps with bypass (through three-way valves).
> > 
> > I use variable speed pumps, setting the curve performance coefficients
> > (1,0,0,0), so power consumption is constant although it can deliver
> > variable flow.
> > 
> > I think it is a good solution to account for a constant pump with
> > bypass, since it provides variable flow but constant power. It is the
> > only way I have found to account for constant pumps as branch pumps,
> > since bypass is not possible.
> > 
> > Do you see it right?
> > 
> > It seems to work ok even with branch pumps in demand side, which should
> > not work according to E+ Reference but Energyplus is not complaining.
> > 
> > That's my second doubt, are branch pumps in demand side correct? As I've
> > said, E+ seems to simulate them right, but Engineering Reference says
> > that pumps in demand side can only be used in the first branch. Why is
> > not Energyplus launching an error, then?
> > 
> > Regards,
> > 
> > Germán Campos.
> >
>




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