Re: [EnergyPlus_Support] Variable Speed Pump Equation

[Linda Lawrie <linda@xxxxxxxxxx>]

At 12:27 PM 10/15/2002, TangoJim wrote:
> Please verify the equation listed
> in the Input-Output
> reference manual for Pump:VariableSpeed, page 291. The
> last Part Load Ratio (PLR) term in the equation is to
> the fourth power. 
>
> Should the last term in the equation be to the third
> power?



Yes, the last term should be to the third
power. Here's the equation from the code:

  FracFullLoadPower =   PumpEquip(PumpNum)%PartLoadCoef(1)                     &
                      + PumpEquip(PumpNum)%PartLoadCoef(2) * PartLoadRatio     &
                      + PumpEquip(PumpNum)%PartLoadCoef(3) * PartLoadRatio**2  &
                      + PumpEquip(PumpNum)%PartLoadCoef(4) * PartLoadRatio**3

Linda

EnergyPlus WebSite: http://www.energyplus.gov
Owner: EnergyPlus_Support list
Member: EnergyPlus Development Team

Yahoo! Groups Sponsor

ADVERTISEMENT

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

The primary EnergyPlus web site is found at:
http://www.energyplus.gov

The group web site is:
http://groups.yahoo.com/group/EnergyPlus_Support/






Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.