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Carbon steel balls (ρ = 7833 kg/m3 and cp = 0.465 kJ/ kg·°C) 8 mm in diameter are annealed by heating them first to 900°C in a furnace and then allowing them to cool slowly to 100°C in ambient air at 35°C. If 1200 balls are to be annealed per hour, determine the rate of exergy destruction due to heat loss from the balls to the air.

Carbon steel balls (ρ = 7833 kg/m3 and cp = 0.465 kJ/ kg·°C) 8 mm in diameter are annealed by heating them first to 900°C in a furnace and then allowing them to cool slowly to 100°C in ambient air at 35°C. If 1200 balls are to be annealed per hour, determine the rate of exergy destruction due to heat loss from the balls to the air.

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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Carbon steel balls (ρ = 7833 kg/m3 and cp = 0.465 kJ/ kg·°C) 8 mm in diameter are annealed by heating them first to 900°C in a furnace and then allowing them to cool slowly to 100°C in ambient air at 35°C. If 1200 balls are to be annealed per hour, determine the rate of exergy destruction due to heat loss from the balls to the air.

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