I've been trying for months to find a way to heat moving air inside a tube to high temperatures. The closest to success I ever had was using an element from a heat gun. It would achieve the desired temperature but over time would burn out.
This has led me to believe making my own coil is probably the best approach.
So my desired temperature in the tube is about 450 degrees F with around 400 CFM going through it. At 1500 watts of power, what diameter and length nickel chromium wire would I need for this?