Fan 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
ptF
pta
np
nm
nt
nVSD
Tk

Tl		 Gas density (kg/m3)
Nominal volume flow (m3/s) of the fan
Rated total pressure increase (Pa)
Abs. static pressure at suction inlet (Pa)
Nominal efficiency of the fan
Nominal efficiency of the motor
Nominal efficiency of the transmission
Nominal efficiency of the frequency converter
Total operating time (h) per year
Currency and price of electricity
Run 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.