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Fluent ver.6.3 is used as CFD(Computational Fluid Dynamics) simulator to predict the performance of snow-melting system by geothermal pipes energy. As the results of this simulation, it is clearly shown that 50℃ of working fluid in to geothermal evaluated as more effect comparing to 45℃ of working fluid. The Surface temperature is come to 5℃ at 1m/s speed and 50℃ temperature of the working fluid.