Direct and Indirect Heat Rotary Dryers - ARVOS GroupOur direct and indirect heat rotary dryers for various processing applications can be stand-alone units or part of complete thermal processing systems.indirect heat dryer,This is What You Need to Know About "Indirect Heat" - Naturally CurlyFeb 22, 2016 . I do this in fear of it causing heat damage. So my question is when using a bonnet dryer is it considered direct heat? Or is it indirect since it's.
indirect heat dryer