Step 4 X Your answer is incorrect. What is the free convection heat transfer coefficient on the top of the duct, in W/m²-K? Th, = i 5.931 W/m?-K Save for Later Attempts: unlimited Submit Answer Step 5 X Your answer is incorrect. What is the free convection heat transfer coefficient on the bottom of the duct, in W/m2-K? Thy = i 2.868 W/m2-K

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
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Step 4
X Your answer is incorrect.
What is the free convection heat transfer coefficient on the top of the duct, in W/m2-K?
i
5.931
W/m2.K
Save for Later
Attempts: unlimited
Submit Answer
Step 5
X Your answer is incorrect.
What is the free convection heat transfer coefficient on the bottom of the duct, in W/m2-K?
hy =
i
2.868
W/m2-K
Save for Later
Attempts: unlimited
Submit Answer
Transcribed Image Text:Step 4 X Your answer is incorrect. What is the free convection heat transfer coefficient on the top of the duct, in W/m2-K? i 5.931 W/m2.K Save for Later Attempts: unlimited Submit Answer Step 5 X Your answer is incorrect. What is the free convection heat transfer coefficient on the bottom of the duct, in W/m2-K? hy = i 2.868 W/m2-K Save for Later Attempts: unlimited Submit Answer
Airflow through a long, 0.15-m-square air conditioning duct maintains the outer duct surface temperature at 10°C. If the horizontal
duct is uninsulated and exposed to air at 35°C in the crawlspace beneath a home, what is the heat gain per unit length of the duct?
Evaluate the properties of air at Tf = 300 K. For the sides of the duct, use the more accurate Churchill and Chu correlations for
laminar flow on vertical plates.
Transcribed Image Text:Airflow through a long, 0.15-m-square air conditioning duct maintains the outer duct surface temperature at 10°C. If the horizontal duct is uninsulated and exposed to air at 35°C in the crawlspace beneath a home, what is the heat gain per unit length of the duct? Evaluate the properties of air at Tf = 300 K. For the sides of the duct, use the more accurate Churchill and Chu correlations for laminar flow on vertical plates.
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