Key parameters Transfer potential:forced flow or free flow Phase change:boiling and condensation Flow conditions:laminar or turbulent flow Geometries:shape,size,position and roughness. Properties:density,viscosity,thermal conductivity,specific heat,and so on. Heat Transfer Su Yongkang School of Mechanical Engineering# 9 Heat Transfer Su Yongkang School of Mechanical Engineering Key parameters • Transfer potential: forced flow or free flow • Phase change: boiling and condensation • Flow conditions: laminar or turbulent flow • Geometries: shape, size, position and roughness. • Properties: density, viscosity, thermal conductivity, specific heat, and so on