Need to prove VFD is superior to dampers RE Air Flow modulation
Need to prove VFD is superior to dampers RE Air Flow modulation
(OP)
All,
Trying to sell a customer on a VFD versus a butterfly damper that is currently installed downstream of an industrial blower. Customer won't let me gather onsite data or conduct any tests, but is willing to look at the 'facts', as he put it. He said, if I can prove on paper that a VFD is better than a butterfly damper and if he can justify the upfront costs, then he'll consider it. Any ideas?
s0eebuch
Trying to sell a customer on a VFD versus a butterfly damper that is currently installed downstream of an industrial blower. Customer won't let me gather onsite data or conduct any tests, but is willing to look at the 'facts', as he put it. He said, if I can prove on paper that a VFD is better than a butterfly damper and if he can justify the upfront costs, then he'll consider it. Any ideas?
s0eebuch





RE: Need to prove VFD is superior to dampers RE Air Flow modulation
This article from Reliance addresses that issue
www.reliance.com/prodserv/standriv/d5061.htm
RE: Need to prove VFD is superior to dampers RE Air Flow modulation
The very impressive savings that can be achieved with variable pitch and variable speed are comparable, especially when slip losses are included in the variable-speed application. End of quote.
RE: Need to prove VFD is superior to dampers RE Air Flow modulation
RE: Need to prove VFD is superior to dampers RE Air Flow modulation
John
RE: Need to prove VFD is superior to dampers RE Air Flow modulation
BTW, other -not as efficient as VSD- flow control methods that may be worth mentioning are:
* Inlet-box Dampers (IBD)
* Variable Inlet Vanes (VIV)
RE: Need to prove VFD is superior to dampers RE Air Flow modulation
I'll post what the final outcome of this issue becomes.
Thanks again.