Table of Contents
Advertisement
Automation VT Drive FC322 Design Guide
2.7.4 Example with Varying Flow over 1 Year
The example below is calculated on the basis of pump characteristics ob-
tained from a pump datasheet.
The result obtained shows energy savings in excess of 50% at the given
flow distribution over a year. The pay back period depends on the price
per kwh and price of frequency converter. In this example it is less than
a year when compared with valves and constant speed.
MG.20.X1.22 - VLT
Remote Site Products - 1-888-532-2706 - www.remotesiteproducts.com
http://www.remotesiteproducts.com/p-20783-Danfoss-131X8145-VLT-Automation-VT-Drive-VFD-FC322-460V-.5-HP.aspx
2 Introduction to VLT Automation VT Drive
Q
n
1
1
Flow
:
=
Q
n
2
2
(
)
H
n
2
1
1
Pressure
:
=
H
n
2
2
(
)
P
n
3
1
1
Power
:
=
P
n
2
2
Energy savings
P
=P
shaft
shaft output
Flow distribution over 1 year
®
is a registered Danfoss trademark
2
21
Advertisement
Table of Contents
