technical NOTES

Life cycle analysis summary of air slide blower on VVVFD concept

S. N. Particulars Conventional System VVVFD Concept

1 Initial Investment

i Type of Stator IMCC-HDOL feeder with pro-V VVVFD

ii IMCC HDOL Feeder

01 no HDOL for FAN is

required – IMCC with

pro V

01 no SFU Required for VFD

2 Power Consumption

i Speed Control & Reduction Not Possible Possible 10-110% possible & getting Power Saving

ii

Energy consumption

as per process

requirement

High Energy consumed

as per motor rated KW

Actual Energy consumed

on account of Air Flow &

air Pressure as per Process

requirement.

3 System Installation & Commissioning

i System Installation & Commissioning Time

Large time required, as

more hardware’s in the

system

Less time required, as less

hardware’s in the system

4 Operation & Maintenance

i System reliability Less Efficient compare to VVVFD More Efficient System, 100% Dependency on Drive

ii System Hardware

More Hardware’s with

the system Compare to

VVVFD

Less Hardware’s with

the system Compare to

conventional system

iii System Further optimisation margin Not possible with conventional system Possible with VVVFD System

S. N. Particulars Cost in Lacs

1 Investment against VFD concept 7.69

2 Investment against conventional concept 8.40

3 Lower investment against VVFD concept -0.71

4 Annual benefit against VVVFD considering approx. 10% speed reduction in energy saving 2.31

13.4 Comparison of Conventional System v/s VVVFD Concept.