Abstract: A mathematical model for the radiation intensity distribution of carbon fiber electric heating radiator is set up, the radiation intensity distribution of different kind of carbon fiber electric heating elements is simulated with software MATLAB, and the characteristic of its space radiation is discussed. The simulating results show that the radiation intensity distribution of the carbon fiber electric heating elements is greatly affected by its structure parameters, with the changing of radius, there is an optimum value about the space radiation intensity, the non-uniformity of radiation intensity distribution increases with the increasing of radius. Compared with the characteristic of radiation intensity distribution of different kinds of electric heating elements, the radiation intensity distribution fields of same specification electric heating elements are basically consistent, but the radiation intensity values change with the type of elements. The radiation intensity of carbon fiber electric heating element is significantly higher than common metal heating element, which can be significantly improved by painting with two sides infrared coating. By adjusting the for-mulae of coating, infrared radiation spectrum distribution can be changed in order to satisfy the special heating requirements. The experiment results show that model test data is approxi-mately accordance with simulating result, which supplies a design reference to carbon fiber heating radiation field in the future.

Key words: Carbon fiber, Infrared coating, MATLAB, Radiation intensity distribution