We have a plate base with the dimensions of 100 mm x 12 mm. We'd like to place 10 square fins symmetrically on this plate. Dimensions and length of the fins are 4 mm x 4mm and 30 mm respectively. Base temperature equals to 120 °C. Material of the fins is aluminium and has a conduction coefficient of 180 W/mk. Air temperature is 20 °C and convection coefficient equals to 60 w/m²K. Please calculate the heat transfer rate, efficiency and effectiveness of the system. (Note: You are also supposed to take the convection from fin tips into account).

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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.