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Citrus fruits are very susceptible to cold weather and extended exposure to subfreezing temperatures can destroy them Consider an 8 cm diameter orange that is initially at 15°C A cold front moves

Citrus fruits are very susceptible to cold weather, and extended exposure to subfreezing temperatures can destroy them. Consider an 8-cm- diameter orange that is initially at 15°C. A cold front moves in one night, and the ambient temperature suddenly drops to -6°C, with a heat transfer coefficient of 15 W/m2 ·K. Using the properties of water for the orange and assuming the ambient conditions to remain constant for 4 h before the cold front moves out, determine if any part of the orange will freeze that night. Solve this problem using analytical one-term approximation method (not the Heisler charts)

Jul 24 2020 View more View Less

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