Correct and complete solution please A fruit with a diameter of 8 cm (k=0.5 W/m °C, a=1.5*10") and uniform temperature of 25°C,was frozen in a refrigerator at -2°C by circulating flow of the air at velocity of 0.2 m/s and itsaverage heat transfer coefficient between fruit and air of 25 W/m2 °C.a) How long does the temperature at the fruit's center was decreased 20°C from the initial stateb) The lowest temperature of this fruit at that calculated time [from question (a)]

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Answered: a) How long does the temperature at the…

a) How long does the temperature at the fruit's center was decreased 20°C from the initial state b) The lowest temperature of this fruit at that calculated time [from question (a)]

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 3.16P: 3.16 A large, 2.54-cm.-thick copper plate is placed between two air streams. The heat transfer...

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Entropy

In physics, entropy means the amount of disorder or the degree of randomness associated with a thermodynamic system. The system is not self-organized when the entropy of the system is high. For instance, when a system is at an elevated temperature, its molecules are in random motion, vibrating and colliding with each other. During this scenario, the probability of finding a molecule at a particular place twice, is low. Under this circumstance, the system can be said to be in a high entropy.

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Correct and complete solution please

A fruit with a diameter of 8 cm (k=0.5 W/m °C, a=1.5*10") and uniform temperature of 25°C,
was frozen in a refrigerator at -2°C by circulating flow of the air at velocity of 0.2 m/s and its
average heat transfer coefficient between fruit and air of 25 W/m2 °C.
a) How long does the temperature at the fruit's center was decreased 20°C from the initial state
b) The lowest temperature of this fruit at that calculated time [from question (a)]

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