spherical container is made of plastic (k=2 W/mK, ρ=5000 kg/m) and has inner and outer radii of 10  cm and 11 cm, respectively. Hot oil (c=3000 J/kgK, ρ=800 kg/m3 ) at 80 0C is stored within the container and  the heat transfer coefficient between the oil and the inner surface of the container h=5 W/m2K . The outer surface of the  container is perfectly insulated. Solve the differential equation under the boundary conditions for steady one  dimensional heat conduction through the plastic material. h (W/m2K)=? a)  Obtain an equation for the variation of  temperature within the plastic material b)  Calculate the temperature of the plastic material at  the inner surface c)  Calculate the temperature of the plastic material at  the inner surface

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Conduction and Convection

When energy travels from one object to another it is said to have undergone heat transfer. Heat transfer is nothing but the transfer of thermal energy or internal energy from one thing to another, like e.g., when a vessel with water, kept on top of a burner, heats up because of the flame underneath it.