Recent content by dazednotconfused

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Combining particulate filter with a fan

Many thanks for the detailed reply. Ordered it from Amazon and will test as soon as it arrives. Thanks.
- dazednotconfused
- Post #19
- Aug 11, 2020
- Forum: Ask a Technical Professional
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Combining particulate filter with a fan

It's an experiment that might turn into a standalone product that wouldn't use a PC. Not easy finding a fan with comparable CFM, static pressure, size, and decibel specs. Others tend be either too large or too loud.
- dazednotconfused
- Post #16
- Aug 11, 2020
- Forum: Ask a Technical Professional
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Combining particulate filter with a fan

Thanks for the reply. Earlier, both a 3-wire and a 4-wire Delta fan I tested worked with only red & black connected so I presumed the BFB0712HHD77 would too: https://www.delta-fan.com/Download/Spec/BFB1012EH-C18J.pdf https://www.delta-fan.com/Download/Spec/BCB0812GHN-F00.pdf If the...
- dazednotconfused
- Post #13
- Aug 11, 2020
- Forum: Ask a Technical Professional
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Combining particulate filter with a fan

I ordered this 3-wire 12V centrifugal fan: https://www.delta-fan.com/Download/Spec/BFB0712HHD77.pdf Connected red/black to 12 volt battery and it didn't turn on. Anyone have experience with Delta Fan's BFB0712HHD77? The 3rd wire is for PWM, but my understanding is that a PWM fan should...
- dazednotconfused
- Post #10
- Aug 11, 2020
- Forum: Ask a Technical Professional
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Combining particulate filter with a fan

That's extremely helpful. Yes, in the axial fans we are testing there is a gap between the blades and the fan tube which presumably is how the air was flowing backwards through. Will switch to a blower fan per your suggestion. Thanks!
- dazednotconfused
- Post #6
- Jul 19, 2020
- Forum: Ask a Technical Professional
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Combining particulate filter with a fan

Thanks for the reply. I tried that now. It made a slight improvement, but still hardly any air coming through the filter end and on the fan exhaust end lots of turbulence (air going in and out). Maybe a 17 CFM fan is still under powered?
- dazednotconfused
- Post #3
- Jul 19, 2020
- Forum: Ask a Technical Professional
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Question Combining a particulate filter and a fan

I'm hoping someone here can help me with this fan and air flow question even though it's not about computer cooling. I'm trying to pull filtered air through a small chamber as part of a lab experiment and getting unexpected behavior. The chamber is a tube, 12" long and 4" inside diameter. On...
- dazednotconfused
- Thread
- Jul 18, 2020
- Replies: 0
- Forum: Cases & Cooling
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Combining particulate filter with a fan

This isn't a computer cooling question, but hopefully someone here with airflow knowledge can answer it. I'm trying to pull filtered air through a small chamber as part of a lab experiment and getting unexpected results. The chamber is a 12" long tube with 4" inside diameter. On one end is a...
- dazednotconfused
- Thread
- Jul 18, 2020
- Replies: 18
- Forum: Ask a Technical Professional

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