Q.3- A solid cylindrical bar which has 150 mm diameter and 220 cm long is located vertically in 20 °C quiescent air. Its

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Q.3- A solid cylindrical bar which has 150 mm diameter and 220 cm long is located vertically in 20 °C quiescent air. Its

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Q 3 A Solid Cylindrical Bar Which Has 150 Mm Diameter And 220 Cm Long Is Located Vertically In 20 C Quiescent Air Its 1
Q 3 A Solid Cylindrical Bar Which Has 150 Mm Diameter And 220 Cm Long Is Located Vertically In 20 C Quiescent Air Its 1 (34.04 KiB) Viewed 47 times
Q.3- A solid cylindrical bar which has 150 mm diameter and 220 cm long is located vertically in 20 °C quiescent air. Its surface temperature is maintained at 120 °C and total heat transferred is 1500 W from this bar to the ambient air. Calculate emissivity value of the bar surface. Neglect heat transfer from upper and lower cross-sectional surfaces of the bar.
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