2006-12-13 07:39:41 · 3 answers · asked by ehsan m 1 in Science & Mathematics ➔ Engineering
Fins can greatly increase heat transfer by providing more surface area. The rate of heat transfer by convection is directly proportional to surface area, so more fins can enable the air heater to supply heat to the environment at a greater rate.
2006-12-13 07:42:01 · answer #1 · answered by DavidK93 7 · 1⤊ 0⤋
The rate of heat transfer is proportional to the area; the fins simply increase the area.
2006-12-13 07:45:17 · answer #2 · answered by Patrick W 1 · 0⤊ 0⤋
Heat transfer is directly proportional to surface area, and when you increase surface area with the use of fins you increase heat transfer. This is why you are told to curl up into a ball when you are cold, which decreases your body surface area and decreases heat transfer
2006-12-13 08:08:12 · answer #3 · answered by Andres R 1 · 0⤊ 0⤋