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The production line of a special biscuit at 30 ̊C and 1 atm has a 0.8 X 0.8 (m) square plate. One side of the plate is maintained at a temperature of 100 ̊C, while the other side is insulated.   Determine the rate of heat transfer from the plate by natural convection if the plate (i) Is horizontal with the hot surface facing down; (ii) Is horizontal with the hot surface facing up;  Data: The properties of air at the film temperature are: thermal conductivity, k= 0.0279 W/m.k); kinematic viscosity= 1.815 x 10-5 m2/s; Pr = 0.709

The production line of a special biscuit at 30 ̊C and 1 atm has a 0.8 X 0.8 (m) square plate. One side of the plate is maintained at a temperature of 100 ̊C, while the other side is insulated.   Determine the rate of heat transfer from the plate by natural convection if the plate (i) Is horizontal with the hot surface facing down; (ii) Is horizontal with the hot surface facing up;  Data: The properties of air at the film temperature are: thermal conductivity, k= 0.0279 W/m.k); kinematic viscosity= 1.815 x 10-5 m2/s; Pr = 0.709

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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The production line of a special biscuit at 30 ̊C and 1 atm has a 0.8 X 0.8 (m)
square plate. One side of the plate is maintained at a temperature of 100 ̊C,
while the other side is insulated. 

 Determine the rate of heat transfer from the plate by natural convection if the
plate
(i) Is horizontal with the hot surface facing down;
(ii) Is horizontal with the hot surface facing up; 

Data: The properties of air at the film temperature are: thermal conductivity, k=
0.0279 W/m.k); kinematic viscosity= 1.815 x 10-5 m2/s; Pr = 0.709

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