biffa
New member
I've been wondering about forced ventilation of digs for removal of bad air or fumes. I've seen some plastic tubing (8" diameter) cheap on ebay, that is like thick plastic bag. Fan wise I'd like something that runs at 12 or 24v.
My question is whether anyone knows what drop of in air flow I can expect trying to force air down the tubing. e.g. a small computer fan may be rated at 24cfm, but if I have six of them blowing down the pipe (that may be 50m long) I will not get 6x24cfm out of the end of the pipe. Has anyone tried this? I know that some people have played with much bigger fans.
Obviously one way is just to try it but if someone has established it doesn't work I'd rather not waste my time.
My question is whether anyone knows what drop of in air flow I can expect trying to force air down the tubing. e.g. a small computer fan may be rated at 24cfm, but if I have six of them blowing down the pipe (that may be 50m long) I will not get 6x24cfm out of the end of the pipe. Has anyone tried this? I know that some people have played with much bigger fans.
Obviously one way is just to try it but if someone has established it doesn't work I'd rather not waste my time.