An Aluminum alloy (2024) plate, heated to a uniform temperature of 227°C, is allowed to cool while vertically suspended in a room where the ambient air is at 27°C. The plate is 0.3 m square. Determine the rate of cooling of the plate. (Ans.=267.1W)   3) Consider a vertical plate of dimension 0.25 m × 0.50 m that is at Ts = 100°C in a quiescent environment at T∞ = 20°C. In the interest of minimizing heat transfer from the plate, which orientation, (A) or (B), is preferred? Estimate the rate of heat transfer by free convection from the front surface of the plate when it is in the preferred orientation

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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2) An Aluminum alloy (2024) plate, heated to a uniform temperature of 227°C, is allowed to
cool while vertically suspended in a room where the ambient air is at 27°C. The plate is 0.3 m
square. Determine the rate of cooling of the plate. (Ans.=267.1W)

 

3) Consider a vertical plate of dimension 0.25 m × 0.50 m that is at Ts = 100°C in a quiescent
environment at T∞ = 20°C. In the interest of minimizing heat transfer from the plate, which
orientation, (A) or (B), is preferred? Estimate the rate of heat transfer by free convection from
the front surface of the plate when it is in the preferred orientation. (Ans.=58.9W

 

 

 

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