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T3=0°F. Wall -T₂ = 61°F -T₁ = 69°F Surface temperatures of plastic panel - Plastic panel has thermal conductivity k = 0.075 Btu/hr.ft. F (average value between T₁ and T₂) 0.502" Fig. 10A.6. Determination of the thermal resistance of a wall.

T3=0°F. Wall -T₂ = 61°F -T₁ = 69°F Surface temperatures of plastic panel - Plastic panel has thermal conductivity k = 0.075 Btu/hr.ft. F (average value between T₁ and T₂) 0.502" Fig. 10A.6. Determination of the thermal resistance of a wall.

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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10A.5. Free convection velocity. (a) Verify the expression for the average velocity in the upward-moving stream in Eq. 10.9-16. (b) Evaluate 3 for the conditions given below. (c) What is the average velocity in the upward-moving stream in the system described in Fig. 10.9-1 for air flowing under these conditions? Pressure Temperature of the heated wall Temperature of the cooled wall Spacing between the walls Answer: 2.3 cm/s T3=0°F. Wall 1 atm 100°C 20°C 0.6 cm -T₂ = 61°F Surface temperatures -T₁ = 69°F of plastic panel Plastic panel has thermal conductivity k = 0.075 Btu/hr. ft. °F (average value between T₁ and T₂) -0.502" Fig. 10A.6. Determination of the thermal resistance of a wall. Problems 321
Transcribed Image Text:10A.5. Free convection velocity. (a) Verify the expression for the average velocity in the upward-moving stream in Eq. 10.9-16. (b) Evaluate 3 for the conditions given below. (c) What is the average velocity in the upward-moving stream in the system described in Fig. 10.9-1 for air flowing under these conditions? Pressure Temperature of the heated wall Temperature of the cooled wall Spacing between the walls Answer: 2.3 cm/s T3=0°F. Wall 1 atm 100°C 20°C 0.6 cm -T₂ = 61°F Surface temperatures -T₁ = 69°F of plastic panel Plastic panel has thermal conductivity k = 0.075 Btu/hr. ft. °F (average value between T₁ and T₂) -0.502" Fig. 10A.6. Determination of the thermal resistance of a wall. Problems 321
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