A steel pipe 50 cm in length has an inside diameter of 9 cm with a wall thickness of 15 mm. The steel has a thermal conductivity of 51 W/m K. The pipe is covered with a 4 cm thick layer of insulation with a thermal conductivity of 0.04 W/m K. What is the total thermal resistance from the inside surface of the pipe to the outside surface of the insulation layer? Express your answer in °C/W or K/W.

A steel pipe 50 cm in length has an inside diameter of 9 cm with a wall thickness of 15 mm. The steel has a thermal conductivity of 51 W/m K. The pipe is covered with a 4 cm thick layer of insulation with a thermal conductivity of 0.04 W/m K. What is the total thermal resistance from the inside surface of the pipe to the outside surface of the insulation layer? Express your answer in °C/W or K/W.

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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Concept explainers

Conduction and Convection

When energy travels from one object to another it is said to have undergone heat transfer. Heat transfer is nothing but the transfer of thermal energy or internal energy from one thing to another, like e.g., when a vessel with water, kept on top of a burner, heats up because of the flame underneath it.

Question

A steel pipe 50 cm in length has an inside diameter of 9 cm with a wall thickness of 15 mm. The steel has
a thermal conductivity of 51 W/m K. The pipe is covered with a 4 cm thick layer of insulation with a
thermal conductivity of 0.04 W/m K. What is the total thermal resistance from the inside surface of the
pipe to the outside surface of the insulation layer? Express your answer in °C/W or K/W.

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