A long rod with a diameter of 2 cm is welded to the outer wall of the boiler and extends out. The wall temperature of the boiler is 80 °C and the room temperature is 20 °C. At a distance of 3 cm from the boiler wall, the bar temperature is measured as 60 °C. Since the heat transfer coefficient between the rod and the medium is 30 W/m2°C a) find the heat conduction coefficient of the Rod material. b) find the amount of heat lost from the Rod.

A long rod with a diameter of 2 cm is welded to the outer wall of the boiler and extends out. The wall temperature of the boiler is 80 °C and the room temperature is 20 °C. At a distance of 3 cm from the boiler wall, the bar temperature is measured as 60 °C. Since the heat transfer coefficient between the rod and the medium is 30 W/m2°C a) find the heat conduction coefficient of the Rod material. b) find the amount of heat lost from the Rod.

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)

8th Edition

ISBN:9781305387102

Author:Kreith, Frank; Manglik, Raj M.

Publisher:Kreith, Frank; Manglik, Raj M.

Chapter2: Steady Heat Conduction

Section: Chapter Questions

Problem 2.26P

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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.

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a) find the heat conduction coefficient of the Rod material.

b) find the amount of heat lost from the Rod.

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