advice on use of axial 15 inch fan as air cleaner

[Brian Deakin]

I live in the uk and I have been given a Vent Axia fan diameter 12 inch which has the following flow rates



cubic foot per second (http://www.convert-me.com/en/convert/flow_rate_volume/ft3_s.html) (ft³/s)

0.1605



cubic foot per minute (http://www.convert-me.com/en/convert/flow_rate_volume/ft3_min.html) (ft³/min)

9.633



cubic foot per hour (http://www.convert-me.com/en/convert/flow_rate_volume/ft3_hour.html) (ft³/hour)

578



cubic foot per day (http://www.convert-me.com/en/convert/flow_rate_volume/ft3_day.html) (ft³/day)

13,870





cubic foot per second (http://www.convert-me.com/en/convert/flow_rate_volume/ft3_s.html) (ft³/s)

0.1605



cubic foot per minute (http://www.convert-me.com/en/convert/flow_rate_volume/ft3_min.html) (ft³/min)

9.633



cubic foot per hour (http://www.convert-me.com/en/convert/flow_rate_volume/ft3_hour.html) (ft³/hour)

578












Please see http://www.vent-axia.com/files/pdf-downloads/In-Line%20Fans%20-%20SDX.pdf

The fan is the 315 sdx and could be fitted with a variable speed

I have a single car garage about 600 cubic feet

regards Brian

[Jim Dwight]

I used a box fan and washable furnace filter in my last shop to help clean the air. It worked but the filter clogged rapidly. I ran the DC with bad bags so the shop was very dusty. In reviews of ambient air filters for shops, I note that they have a lot more surface area in the filter than my one furnace filter provided.

Long way of saying my experience is you have to worry about adequate surface area for the filter more than the airflow of the fan. If I had made a cube with filters on all but one side, that would probably have worked a lot better, for instance.

[Brian Deakin]

Hi Jim
Thank you for your post I came to the same conclusion as you .I plan to make cube with panel filters then have a finer filter inside the cube

The problem in the Uk is identifying a source of filters at a reasonable price

[Ole Anderson]

I would have to say there are some unit conversion issues with the fan air flow rates. Certainly a 12" axial fan will flow much more than 9.633 cfm. Same with your garage volume, 600 cf would be a very, very small garage.

[Lee Schierer]

The problem with any fan is that putting a filter in the path will reduce the air flow. With air flows as low as you indicate, it appears that the fan will develop very little static pressure which would mean with a filter in the air channel it likely would not do much filtering for you.

I would suggest you watch the dust bins and find an old forced air furnace that has a good squirrel cage blower in it. It will move far more air and will work with a filter.

[Brian Deakin]

Thank you for your post
Please accept my apologies I have made some mistakes with the math

Can you please view http://www.vent-axia.com/files/pdf-d...%20-%20SDX.pdf (http://www.vent-axia.com/files/pdf-downloads/In-Line%20Fans%20-%20SDX.pdf) and advice on the flow rate Please note the figures in the chart are in cubic metres per second and the fan is the 315

The figure quoted is 0.35 cubic metres per second which I believe equates to 741 cubic feet per minute

Further the garage is very small compared to US garages The house was built in 1957 and the garage is approximately 8ft high ,10ft wide 20 ft deep

This gives a figure of 1600 cubic feet not 600

regards Brian