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Aleksandr-060686 [28]
3 years ago
11

The components of an electronic system dissipating 90 W are located in a 1-m-long circular horizontal duct of 15-cm diameter. Th

e components in the duct are cooled by forced air, which enters at 32°C at a rate of 0.65 m3/min. Assuming 85 percent of the heat generated inside is transferred to air flowing through the duct and the remaining 15 percent is lost through the outer surfaces of the duct, determine (a) the exit temperature of air and (b) the highest component surface temperature in the duct.

Engineering
1 answer:
Artyom0805 [142]3 years ago
4 0

Answer:

Given data

 electronic system dissipating = 90 W

diameter = 15 cm

The components in the duct are cooled by forced air which enters at 32°C at a rate of 0.65 m3 /min

the duct and the remaining = 15 %

See pictures for solution.

Explanation:

See attached pictures for detailed explanation.

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