An aluminum cube 5 cm on a side is initially at a uniform temperature of 100C and is suddenly exposed to room air at 25C The convection heat transfer coefficient is 20 W m2 C Calculate the time required for the geometric center temperature to reach 50C ...

An aluminum cube 5 cm on a side is initially at a uniform temperature of 100C and

Question:

An aluminum cube 5 cm on a side is initially at a uniform temperature of 100ºC and is suddenly exposed to room air at 25ºC. The convection heat-transfer coefficient is 20 W/m2 · ºC. Calculate the time required for the geometric center temperature to reach 50ºC.