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Flat-plate solar collectors are often tilted up towardthe sun in order to intercept a greater amount of direct solarradiation. The tilt angle from the horizontal also affects therate of heat loss from the collector. Consider a 1.5-m-highand 3-m-wide solar collector that is tilted at an angle u fromthe horizontal. The back side of the absorber is heavily insulated.The absorber plate and the glass cover, which arespaced 2.5 cm from each other, are maintained at temperaturesof 80°C and 40°C, respectively. Determine the rate ofheat loss from the absorber plate by natural convection foru = 0°, 30°, and 90°.

Flat-plate solar collectors are often tilted up towardthe sun in order to intercept a greater amount of direct solarradiation. The tilt angle from the horizontal also affects therate of heat loss from the collector. Consider a 1.5-m-highand 3-m-wide solar collector that is tilted at an angle u fromthe horizontal. The back side of the absorber is heavily insulated.The absorber plate and the glass cover, which arespaced 2.5 cm from each other, are maintained at temperaturesof 80°C and 40°C, respectively. Determine the rate ofheat loss from the absorber plate by natural convection foru = 0°, 30°, and 90°.

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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Flat-plate solar collectors are often tilted up toward
the sun in order to intercept a greater amount of direct solar
radiation. The tilt angle from the horizontal also affects the
rate of heat loss from the collector. Consider a 1.5-m-high
and 3-m-wide solar collector that is tilted at an angle u from
the horizontal. The back side of the absorber is heavily insulated.
The absorber plate and the glass cover, which are
spaced 2.5 cm from each other, are maintained at temperatures
of 80°C and 40°C, respectively. Determine the rate of
heat loss from the absorber plate by natural convection for
u = 0°, 30°, and 90°.

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