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

[Mário <mneves32@xxxxxxxxx>]

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.
>




------------------------------------

Primary EnergyPlus support is found at:
http://energyplus.helpserve.com or send a message to energyplus-support@xxxxxxxx

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 currently allowed but be mindful that not everyone has a high speed connection.  Limit attachments to small files.

EnergyPlus Documentation is searchable.  Open EPlusMainMenu.pdf under the Documentation link and press the "search" button.
Yahoo! Groups Links

<*> To visit your group on the web, go to:
    http://groups.yahoo.com/group/EnergyPlus_Support/

<*> Your email settings:
    Individual Email | Traditional

<*> To change settings online go to:
    http://groups.yahoo.com/group/EnergyPlus_Support/join
    (Yahoo! ID required)

<*> To change settings via email:
    EnergyPlus_Support-digest@xxxxxxxxxxxxxxx 
    EnergyPlus_Support-fullfeatured@xxxxxxxxxxxxxxx

<*> To unsubscribe from this group, send an email to:
    EnergyPlus_Support-unsubscribe@xxxxxxxxxxxxxxx

<*> Your use of Yahoo! Groups is subject to:
    http://docs.yahoo.com/info/terms/