Previous in Forum: life of troughed conveyor belt   Next in Forum: mechanical Engineering
Close

Comments Format:






Change Mode
Close

Subscribe to Discussion:

CR4 allows you to "subscribe" to a discussion
so that you can be notified of new comments to
the discussion via email.

Close

Rating Vote:







Add Vote
Rate Comments: Nested
Anonymous Poster

Range hood efficiency - Axial Fan vs Centrifugal fan

09/29/2009 12:14 PM

Hi all,

I am not from mechanical side. I am looking to install Kitchen range hood. After going through the models i came to know they offer with 2 types of fan. Can any one please help to choose which is more efficient . Axial fan or Centrifugal fan.

When they say 650 cfm . Does it mean that same flow of air can be achieved with both types

thanks for your input
Reply
Interested in this topic? By joining CR4 you can "subscribe" to
this discussion and receive notification when new comments are added.
dac1267
Power-User
United States - Member - Engineering Fields - Mechanical Engineering - Hobbies - Fishing - Hobbies - Musician -

Join Date: Jun 2009
Location: California
Posts: 106
Good Answers: 19
#1

Re: Range hood efficiency - Axial Fan vs Centrifugal fan

09/29/2009 1:47 PM

The centrifugal fan might be slightly more efficient if both fans are operating at their best efficiency point, but it is probably more expensive too. Your best indication would be to look at the operating watts or amps of the motor, if they are both running at 650 CFM at the same pressure. The motor with the lower watts or amps is more efficient.

Typically, axial fans are used with low flow and pressure, which would be the case if your exhaust just goes straight up to the roof with a vent cap. However, if you have alot of ductwork with bends, dampers, etc. then you might consider a centrifugal fan.
Reply
Reply to Forum Thread
Have a Different Question?

Previous in Forum: life of troughed conveyor belt   Next in Forum: mechanical Engineering

Advertisement

Got Something to Say?
Ask a Question
Start a Discussion

Search this Forum
Mechanical Engineering:
Go

CR4 Sections
Aerospace
BioMech & BioMed
Chemical & Material Science
Civil Engineering
Communications & Electronics
Education and Engineering Careers
Electrical Engineering
General Discussion
Instrumentation
Manufacturing
Mechanical Engineering
New Technologies & Research
Software & Programming
Sustainable Engineering
Transportation

Site Directories
Forum Directory
Blog Directory
User Group Directory
RSS Feeds

CR4 Rules of Conduct
CR4 FAQ
Site Glossary

Who's Online (58 right now)
Show Members
Advertisement