One person can serve a quick drink of 5 cm diameter and 12 cm high cans for their guests. put it in the deep freezer at –20 °C in order to cool it. 25 °C initially The heat transfer coefficient on the box surface at a uniform temperature is 15 W/m².°C. Physical beverage can properties of ρ=840 kg/m3 , taking cp=3.81 kJ/kg.°C, k=0.75 W/m.°C and α=1.3x10⁻⁷ m²/s as the center the time required for the temperature to reach 5 °C and the maximum amount of heat transferred. calculate.

One person can serve a quick drink of 5 cm diameter and 12 cm high cans for their guests. put it in the deep freezer at –20 °C in order to cool it. 25 °C initially The heat transfer coefficient on the box surface at a uniform temperature is 15 W/m².°C. Physical beverage can properties of ρ=840 kg/m3 , taking cp=3.81 kJ/kg.°C, k=0.75 W/m.°C and α=1.3x10⁻⁷ m²/s as the center the time required for the temperature to reach 5 °C and the maximum amount of heat transferred. calculate.

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)

8th Edition

ISBN:9781305387102

Author:Kreith, Frank; Manglik, Raj M.

Publisher:Kreith, Frank; Manglik, Raj M.

Chapter3: Transient Heat Conduction

Section: Chapter Questions

Problem 3.12P

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