I'm planning to develop a helical heating coil wound around a ceramic rod. The purpose of this coil is to radiate heat to its nearby surroundings.
I want to know if there should be a spacing between each turn in the coil? If yes does the heat radiated depend on the spacing? If yes what should be the spacing inorder to attain maximum intensity of heat radiation, keeping all other parameters constant?
I'm guessing, the lesser the spacing more are the turns in the coil hence more heat radiation, thus the spacing should be as little as possible (but not zero) inorder for maximum heat radiation. Am I right?
EDIT: I'm interested in a high intensity heat to generate a high temperature in a small volume. Basically I just want to heat the surface just below the coil. The distance between the coil and the surface is not more than two millimetres.