For steady state condition, determine the heat lost by inner lining through shields to the outer lining to keep the temperature of the outside surface of a hollow brick lining of a furnace at 100°C when the temperature of the inside surface of the lining is 500°C. Take the emissivity of brick lining as well as for shield as 0.87. Heat transfer to the surrounding from the outer surface takes place by radiation and convection. The heat transfer coefficient for natural convection is given by ha = 1.44 (ΔT)^0.33 W/m2-K, ta (air temperature) = 25°C. Neglect the heat transfer by conduction and convection between the brick lining.
For steady state condition, determine the heat lost by inner lining through shields to the outer lining to keep the temperature of the outside surface of a hollow brick lining of a furnace at 100°C when the temperature of the inside surface of the lining is 500°C. Take the emissivity of brick lining as well as for shield as 0.87. Heat transfer to the surrounding from the outer surface takes place by radiation and convection. The heat transfer coefficient for natural convection is given by ha = 1.44 (ΔT)^0.33 W/m2-K, ta (air temperature) = 25°C. Neglect the heat transfer by conduction and convection between the brick lining.
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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For steady state condition, determine the heat lost by inner lining through shields to the outer lining to keep the temperature of the outside surface of a hollow brick lining of a furnace at 100°C when the temperature of the inside surface of the lining is 500°C. Take the emissivity of brick lining as well as for shield as 0.87. Heat transfer to the surrounding from the outer surface takes place by radiation and convection. The heat transfer coefficient for natural convection is given by ha = 1.44 (ΔT)^0.33 W/m2-K, ta (air temperature) = 25°C. Neglect the heat transfer by conduction and convection between the brick lining.
Transcribed Image Text:h-Shields
outer liniug
at l00
Ihner
linning
కంం
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