Re: [EnergyPlus_Support] How to model riding pump curve in E+?

["Jean Marais jeannieboef@xxxxxxxxx [EnergyPlus_Support]" <EnergyPlus_Support@xxxxxxxxxxxxxxx>]

?
E+ has variable flow and constant flow pumps. The motor and its energy consumption if fictional. Set it up so that the energy usage reflects what you need it to reflect.

Don't confuse variable/constant flow with variable/constant speed. The second refers to the motor, i.e. impeller speed.

On 10 Mar 2016 7:36 pm, "Jim Dirkes jim@xxxxxxxxxxxxxxxxxxxxxxxxxxx [EnergyPlus_Support]" <EnergyPlus_Support@xxxxxxxxxxxxxxx> wrote:

 

Sean,

I recommend using a variable speed pump object and curve coefficients that mimic the pump curve. I attempted to duplicate a sample ASHRAE curve in the attached spreadsheet; this may give you an idea for your own pump and situation.

On Tue, Mar 8, 2016 at 4:43 AM, seanking.1970@xxxxxxxxxxx [EnergyPlus_Support] <EnergyPlus_Support@xxxxxxxxxxxxxxx> wrote:

 

Hi,

I am modelling a LEED project, and coming across an issue with modelling on "riding pump curve" for hot water pump when using ASHRAE 90.1-2007 App G (G3.1.3.5). I am quite certain the pump should be a constant speed pump but it needs to deliver variable flow by riding the pump curve. How can I really model it in EnergyPlus?

Any advice would be very much appreciated.

Sean

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Posted by: Jean Marais <jeannieboef@xxxxxxxxx>

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