Steady And Unsteady Heat Transfer. All the heat exchangers work in steady state. Heat transfer is the transfer of thermal energy from a body at a high temperature to another at a lower temperature.
Heat transfer is the transfer of thermal energy from a body at a high temperature to another at a lower temperature. Consider steady two dimensional heat transfer in a rectangular solid body whose cross section is given in the figure below. Steady state diffusion and unsteady state diffusion are two types of diffusion.
Applying the first heat conduction equation in 1 to node at the time moment of the equation can be rewritten as the partial differential in the two sides of 2 can be approximated by difference quotient.
Students in mechanical engineering dept. Surface heat transfer coefficient provided is an average value. Joseph engineering college vamanjoor mangalore india during sept. The main difference between steady state diffusion and unsteady state diffusion is that steady state diffusion takes place at a constant rate whereas the rate of unsteady state diffusion is a function of time.