Would 2x 5.5" Fans attached to Wye Duct pull efficiently?

  • Thread starter Ambience
  • Start date
  • #1
2
1
Summary:
Are there issues having 2 exhausting fans attached to a wye duct?
Hello everyone. I'm an idiot and have a question.


I want to do something like this:
ssssssssssss.jpg


I want to use 2 computer fans (140mm/5.5" and rated @ 82 CFM each) attached to a wye connector to exhaust air.
Can it be used in this nature? Usually it's one big fan exhausting from multiple areas. This probably seems backwards, but was curious.
My other option is having each fan with their own dedicated ducting with no wye fitting.

Why am I doing this? Using it in a grow tent where I need to exhaust air. I currently have the 4" ducting and 2 fans. All I would need is to buy a wye duct fitting. Doing it this way would save me from having to rig up another dedicated duct for it's own single fan (when I could just attached 2 to a wye) or purchase a more powerful fan with the same size or bigger ducting.

Thanks for any feedback. Take care.
 
Last edited by a moderator:

Answers and Replies

  • #2
DaveE
Science Advisor
Gold Member
1,809
1,465
Can you do it? Sure, no problem.
Is it efficient? Compared to what?
The fan(s) are restricted somewhat by the pressure drop in the duct(s) though. So fans with larger (or multiple) ducts work better than smaller ducts. You won't get twice the airflow by adding a second fan if they share an upstream duct.
In general, detailed solutions are difficult and depend on lots of details in your setup.
There are many web sites that can help you understand more; like these:
https://www.boydcorp.com/resources/temperature-control/heat-exchanger-fan-selection.html
https://www.cuidevices.com/catalog/...-a-fan-for-forced-air-cooling-cui-devices.pdf
https://www.orientalmotor.com/products/pdfs/2015-2016/H/Cooling_Fan_Selection_Calculations.pdf
 
  • #3
2
1
Thanks. I will do each fan with it's own single ducting setup.
 

Related Threads on Would 2x 5.5" Fans attached to Wye Duct pull efficiently?

  • Last Post
Replies
11
Views
20K
  • Last Post
Replies
2
Views
2K
  • Last Post
Replies
4
Views
176
  • Last Post
Replies
3
Views
2K
  • Last Post
Replies
13
Views
14K
  • Last Post
Replies
6
Views
4K
  • Last Post
Replies
2
Views
1K
  • Last Post
Replies
14
Views
17K
  • Last Post
Replies
3
Views
6K
  • Last Post
Replies
2
Views
7K
Top