Abstract: In this paper, a heating power density computational model, based on melting ice interface displacement and phase change heat transfer theory, is established for wind turbine blade de-icing system using polymer electric thermal film. This model takes in account the thermal storage of GFRP layers and ice, interface melting ice latent heat and convection heat transfer, convective mass transfer and radiation heat transfer of air exchange with the surrounding environment. In order to verify the proposed model, the heating power density under specific environment was calculated and the corresponding deicing experiments using GFRP plates containing polymer electric heating film were carried out. The results show good agreements between the mathematical model and experiment.

Key words: polymer electric heating film, electrically heated deicing, power density, computational model