Pump Drive Savings Calculator v. 2.0

Use the calculators on the left to determine (and print) savings for variable speed drive vs. other type of regulation methods.

Calculators:

Initial data needed

D
Qn
Hn
Hmax
Hst
np
nm
nVSD
Tk

Tl
Liquid density (kg/dm3) (water=1)
Nominal volume flow (l/s) of the pump
Nominal head (m) of the pump
Maximum head (m) of the pump (at zero flow)
Static height (m) of the system
Nominal efficiency of the pump
Nominal efficiency of the motor
Nominal efficiency of the frequency converter
Total operating time (h) per year (year=8760 h)
Currency and price of electricity
Dwell times (%) of Tk at different flow rates

System requirements

Terms of use

In no event shall Honeywell or its suppliers be liable for any special, incidental, indirect, direct or consequential damages whatsoever (including, without limitation, damages for loss of business profits, business interruption, loss of business information, or any other pecuniary loss) arising out of the use of or inability to use this calculation software, even if Honeywell has been advised of the possibility of such damages. The use of this calculation software is exclusively at the risk of the user.