Which of the following is also called a ring dryer?
(a) Pneumatic conveyor dryer
(b) Drum dryer
(c) Freeze dryer
(d) Spray dryer
I got this question in an internship interview.
This intriguing question comes from Unit Operations topic in chapter Heat Transfer Equipment, Microwave Heating, Evaporation, Diffusion and Mass Transfer and Dehydration of Food Engineering