Design of Turbo Cowl Question

[markbee]

Hi
I am making a turbo cowl for my built in barbecue. Does anyone know what the angle of the "fins" should be for maximum efficiency of smoke extraction?

[forhire]

Hi
I am making a turbo cowl for my built in barbecue. Does anyone know what the angle of the "fins" should be for maximum efficiency of smoke extraction?

My guess is 45 degrees. I modeled it using 1" high fins at 45 degrees. I was originally thinking it might have been around 60 degrees but that was too flat. Compare the two photos... it might be 50 but not likely much more.

[markbee]

Thanks for the trouble, that looks about right. What program did you use to draw the cowl? Perhaps I should try find an outlet in town that stocks them and measure it while I am there. These things are generally custom made here in SA, so its not easy to find anyone who has one on display.

[forhire]

Thanks for the trouble, that looks about right. What program did you use to draw the cowl?

Not a problem, it only took a minute. I am currently using Alibre Design. Post some pictures of your project when you get going on it. ;)

[markbee]

Will do, thanks again.