A short concrete cylinder 15 cm in diameter and 30 cm long is initially at 25C It is allowed to cool in an atmospheric environment in which the temperature is 0C Calculate the time required for the center temperature to reach 10C if the heat transfer coefficient is 17 W m2 C ...

r 0 75 cm L 15 cm T i 25C T 0C T 0 6 ...

A short concrete cylinder 15 cm in diameter and 30 cm long is initially at 25C. It

Question:

A short concrete cylinder 15 cm in diameter and 30 cm long is initially at 25ºC. It is allowed to cool in an atmospheric environment in which the temperature is 0ºC. Calculate the time required for the center temperature to reach 10ºC if the heat-transfer coefficient is 17 W/m2 · ºC.