Furthermore,the analytic formula of heat absorbed Q c,heat dissipation Q h,input power P and refrigeration coefficient ε were obtained,and the graphs for the relation of heat absorbed Q c,heat dissipation Q h,input power P ,refrigeration coefficient ε and intensity of heat emission α 1 by numerical calculatio.

The air flow and heat dissipation behaviors in a single air passage of rotor disc in an eddy current retarder with original structure and attached inline and staggered pin fins structures for forced heat dissipation are comparatively analyzed using standard k-ε double equations and energy equation.