1 - A square chip, with side w = 5 mm, operates under isothermal conditions. The chip is positioned on a substrate so that its side and bottom surfaces are thermally insulated, while its top surface is exposed to the flow of a refrigerant at T∞ = 15°C. From reliability considerations, the chip temperature cannot exceed T = 85°C. The refrigerant being air, with a convection heat transfer coefficient corresponding h = 200 W/(m2K), what is the maximum allowable power for the chip?

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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.