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Piotrsko · 03-30-2022, 10:04 AM

The fans already have a venturi, you might just need to extend the pipe (throat [¿]) but that would take a 2 stage die or some sort of hole put into the sheet to start with and a 20 + ton press. Blade design is horribly inefficient for turning windspeed into torque because they are generally a highly undercambered airfoil so you are using only part of the face of the blade. Proper selection of fan unit is required. Additional issue with cost: 100 fans @ $10 ea is a grand less shipping and taxes assuming you can get them for that price.

Engineering this to actually work is way past my old pay grade by a factor of ten

03-30-2022, 10:04 AM	#2 (permalink)
Piotrsko Somewhat crazed Join Date: Sep 2013 Location: 1826 miles WSW of Normal Posts: 4,061 Thanks: 467 Thanked 1,112 Times in 981 Posts	The fans already have a venturi, you might just need to extend the pipe (throat [¿]) but that would take a 2 stage die or some sort of hole put into the sheet to start with and a 20 + ton press. Blade design is horribly inefficient for turning windspeed into torque because they are generally a highly undercambered airfoil so you are using only part of the face of the blade. Proper selection of fan unit is required. Additional issue with cost: 100 fans @ $10 ea is a grand less shipping and taxes assuming you can get them for that price. Engineering this to actually work is way past my old pay grade by a factor of ten __________________ casual notes from the underground:There are some "experts" out there that in reality don't have a clue as to what they are doing.