In a manufacturing process, long aluminum rods of square cross section with d = 27 mm are cooled from an initial temperature of T₁ = 400°C. V.T (a) Configuration (a) should be used to minimize cooling time. (b) Tsur Which configuration (a or b) in the sketch should be used to minimize the time needed for the rods to reach a safe-to-handle temperature of 60°C when exposed to air in cross flow at V = 8 m/s, T = 30°C? What is the required cooling time, in s, for the preferred configuration? The emissivity of the rods is & = 0.10 and the surroundings temperature is Tsur = 20°C. Evaluate the properties of the air at 400 K and the properties of the aluminum at 500 K. Radiation can be neglected in a calculation of the cooling time.

In a manufacturing process, long aluminum rods of square cross section with d = 27 mm are cooled from an initial temperature of T₁ = 400°C. V.T (a) Configuration (a) should be used to minimize cooling time. (b) Tsur Which configuration (a or b) in the sketch should be used to minimize the time needed for the rods to reach a safe-to-handle temperature of 60°C when exposed to air in cross flow at V = 8 m/s, T = 30°C? What is the required cooling time, in s, for the preferred configuration? The emissivity of the rods is & = 0.10 and the surroundings temperature is Tsur = 20°C. Evaluate the properties of the air at 400 K and the properties of the aluminum at 500 K. Radiation can be neglected in a calculation of the cooling time.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

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can you please work this out step by step please and do everything

In a manufacturing process, long aluminum rods of square cross section with d = 27 mm are cooled from an initial temperature of
Ti = 400°C.
V, T
(a)
Configuration (a) should be used to minimize cooling time.
(b)
d
Which configuration (a or b) in the sketch should be used to minimize the time needed for the rods to reach a safe-to-handle
temperature of 60°C when exposed to air in cross flow at V = 8 m/s, T 30°C? What is the required cooling time, in s, for the
preferred configuration? The emissivity of the rods is & = 0.10 and the surroundings temperature is Tsur = 20°C. Evaluate the
properties of the air at 400 K and the properties of the aluminum at 500 K. Radiation can be neglected in a calculation of the cooling
time.
I sur
=

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