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The composite wall of an oven consists of three materials A, B and C. Under steady state operating conditions, the outer surface temperature Tso is 20°C, the inner surface temperature Tsi is 600°C and the oven air temperature T is 800 °C, For the following data: thermal conductivities kA = 20 W/(mK) and kC = 50 W/(mK), thickness LA = 0.3 m, L= 0.15 m and L= 0.15 m, inner-wall heat transfer coefficient h = 25 W/(m2K) the thermal conductivity kB (W/(mK) of the material B, is calculated as
  • a)
    35
  • b)
    1.53
  • c)
    0.66
  • d)
    0.03
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
The composite wall of an oven consists of three materials A, B and C. ...
Heat lost by convection = Heat conducted by conduction


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The composite wall of an oven consists of three materials A, B and C. Under steady stateoperating conditions, the outer surface temperature Tso is 20°C, the inner surface temperature Tsi is 600°C and the oven air temperature T∞ is 800 °C, For the following data: thermal conductivities kA = 20 W/(mK) and kC = 50 W/(mK), thickness LA = 0.3 m, LB= 0.15 m and LC= 0.15 m, inner-wall heat transfer coefficient h = 25 W/(m2K) the thermal conductivity kB (W/(mK) of the material B, is calculated asa)35b)1.53c)0.66d)0.03Correct answer is option 'B'. Can you explain this answer?
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The composite wall of an oven consists of three materials A, B and C. Under steady stateoperating conditions, the outer surface temperature Tso is 20°C, the inner surface temperature Tsi is 600°C and the oven air temperature T∞ is 800 °C, For the following data: thermal conductivities kA = 20 W/(mK) and kC = 50 W/(mK), thickness LA = 0.3 m, LB= 0.15 m and LC= 0.15 m, inner-wall heat transfer coefficient h = 25 W/(m2K) the thermal conductivity kB (W/(mK) of the material B, is calculated asa)35b)1.53c)0.66d)0.03Correct answer is option 'B'. Can you explain this answer? for Mechanical Engineering 2024 is part of Mechanical Engineering preparation. The Question and answers have been prepared according to the Mechanical Engineering exam syllabus. Information about The composite wall of an oven consists of three materials A, B and C. Under steady stateoperating conditions, the outer surface temperature Tso is 20°C, the inner surface temperature Tsi is 600°C and the oven air temperature T∞ is 800 °C, For the following data: thermal conductivities kA = 20 W/(mK) and kC = 50 W/(mK), thickness LA = 0.3 m, LB= 0.15 m and LC= 0.15 m, inner-wall heat transfer coefficient h = 25 W/(m2K) the thermal conductivity kB (W/(mK) of the material B, is calculated asa)35b)1.53c)0.66d)0.03Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for Mechanical Engineering 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The composite wall of an oven consists of three materials A, B and C. Under steady stateoperating conditions, the outer surface temperature Tso is 20°C, the inner surface temperature Tsi is 600°C and the oven air temperature T∞ is 800 °C, For the following data: thermal conductivities kA = 20 W/(mK) and kC = 50 W/(mK), thickness LA = 0.3 m, LB= 0.15 m and LC= 0.15 m, inner-wall heat transfer coefficient h = 25 W/(m2K) the thermal conductivity kB (W/(mK) of the material B, is calculated asa)35b)1.53c)0.66d)0.03Correct answer is option 'B'. Can you explain this answer?.
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