6. 0 /1 points | Previous Answers SerCP9 11.P.041.soln. My Notes | Question Part

Question

6.0/1 points |  Previous AnswersSerCP9 11.P.041.soln.My Notes  | Question Part Points Submissions Used A steam pipe is covered with 1.50-cm thick insulating material of thermal conductivity of 0.200 cal/cm 6.0/1 points |  Previous AnswersSerCP9 11.P.041.soln.My Notes  | 6.0/1 points |  Previous AnswersSerCP9 11.P.041.soln.My Notes  | Question Part Points Submissions Used A steam pipe is covered with 1.50-cm thick insulating material of thermal conductivity of 0.200 cal/cm Question Part Points Submissions Used Question Part Points Submissions Used Question Part Points Submissions Used Question Part Points Submissions Used Question Part Points Submissions Used A steam pipe is covered with 1.50-cm thick insulating material of thermal conductivity of 0.200 cal/cm A steam pipe is covered with 1.50-cm thick insulating material of thermal conductivity of 0.200 cal/cm Question Part Points Submissions Used A steam pipe is covered with 1.50-cm thick insulating material of thermal conductivity of 0.200 cal/cm middot degree C middot s. How much energy is lost every second when the steam is at 220 degree C and the surrounding air is at 20.0 degree C? The pipe has a circumference of 800 cm and a length of 45.0 m. Neglect losses through the ends of the pipe.

Explanation / Answer

Because the thickness of insulation is small compared to the diameter you can ignore the curvature of the pipe wall and treat as linear heat flow problem through a flat plate.

The heat flow through a flat layer is given by
?Q/?t = k

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