Looking for suggestions

[ns_in_tex]

My bonfires are spectacular but otherwise I am flanked the redneck course.:laughing: There is chart in the link that shows the relationship between rpm and required power to achieve it. Axial produce low head and large volume.
Example of axial is your ceiling fan on the very simple side and the compressor of jet engine on the complex side.

If we looked at the right chart, I think it shows, double the rpm = double the cfm, but uses 8 time the power to run it. Power use does not bother me, we have 39 pto at our disposal.
Now for the axial blower, my mind says, ceiling fan not good, but if we could come up with a cheap (out of the junk pile) jet engine blower, then we might show Tim Taylor a thing or two.

 

[cat fever]

If we looked at the right chart, I think it shows, double the rpm = double the cfm, but uses 8 time the power to run it. Power use does not bother me, we have 39 pto at our disposal.
Now for the axial blower, my mind says, ceiling fan not good, but if we could come up with a cheap (out of the junk pile) jet engine blower, then we might show Tim Taylor a thing or two.

But then it would take all your tractor HP to just keep moving forward. Maybe even 4 wheel drive. Unless of course you had the jet blast going backwards.:laughing:

 

[Steave]

If we looked at the right chart, I think it shows, double the rpm = double the cfm, but uses 8 time the power to run it. Power use does not bother me, we have 39 pto at our disposal.
Now for the axial blower, my mind says, ceiling fan not good, but if we could come up with a cheap (out of the junk pile) jet engine blower, then we might show Tim Taylor a thing or two.

You are wanting Tim Taylor power I think you're on the right track with the Jet engine.

Those axial fans used in "confined" spaces I remember blows a lot of air for their size and pull as much air as they push. We used to put one in each end of confined spaces when we were working inside. I never paid attention to their design. Might be worth looking at one and get an idea for a large version. Just a thought.

 

[ns_in_tex]

But then it would take all your tractor HP to just keep moving forward. Maybe even 4 wheel drive. Unless of course you had the jet blast going backwards.:laughing:

Hadn't thought of that. Now you're showing off my Redneck Degree.

 

[ns_in_tex]

You are wanting Tim Taylor power I think you're on the right track with the Jet engine.

Those axial fans used in "confined" spaces I remember blows a lot of air for their size and pull as much air as they push. We used to put one in each end of confined spaces when we were working inside. I never paid attention to their design. Might be worth looking at one and get an idea for a large version. Just a thought.

That made me think, we have an old chicken house fan. Probably too big to make work easily, but I remember hooking it up one time, and it was very noisy but I think it was moving a lot of air. I remember wondering why they didn't use a larger, slower fan for less noise. Maybe OSHA doesn't worry about the chickens.

 

[Luke'sScreenName]

The "fan law" says ( Fan Affinity Laws ) head increases with square of speed while flow increases linearly. Power required to run the blower=mass flow * head therefore to double the speed of the fan requires 8 times power increase. Since real life blowers deviate from ideal machine the actual number will differ but for simple blower should be pretty close to ideal machine. What you need is axial blower.

This is why I love this kind of thread. Thanks.
Can you explain the use of the term "affinity" here? I'm thinking it has a specific connotation in physics-speak that is over my head.