Concrete wall 30 cm thick has 10 cm wide void (area 0.1 m²) in the middle as shown. Find temperature difference between behind the void (T.) and the surface of the intact wall, Tw Assume: concrete = 0.76 W m¹ °C, Kair=0.026 W m¹ °C, and hair = 5 W m² °C¹.

Concrete wall 30 cm thick has 10 cm wide void (area 0.1 m²) in the middle as shown. Find temperature difference between behind the void (T.) and the surface of the intact wall, Tw Assume: concrete = 0.76 W m¹ °C, Kair=0.026 W m¹ °C, and hair = 5 W m² °C¹.

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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Question

Concrete wall 30 cm thick has 10 cm wide void (area 0.1 m²) in the middle as shown.
Find temperature difference between behind the void (T.) and the surface of the intact
wall, Tw.
Assume: concrete = 0.76 W m¹ °C, Kair= 0.026 W m¹ °C, and hair = 5 W m² °C.
T₁ = 32 °C
T₂ = 17 °C
air
10 cm
Concrete
Tv
Tw

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