In an experiment to determine thermal conductivity of a new metal alloy, a bar of the metal is completely surrounded by insulation and exposed to 750 W of constant heat energy at one end. The bar has a radius 0.063 m. The length is 0.454 m. The entire set-up is in a cold room and once the system has reached steady state conditions, the temperature at the hot end is measured to be 70°C and the temperature at the cold end is measured to be 20°C. What is the thermal conductivity in W/m•K of the metal alloy.

In an experiment to determine thermal conductivity of a new metal alloy, a bar of the metal is completely surrounded by insulation and exposed to 750 W of constant heat energy at one end. The bar has a radius 0.063 m. The length is 0.454 m. The entire set-up is in a cold room and once the system has reached steady state conditions, the temperature at the hot end is measured to be 70°C and the temperature at the cold end is measured to be 20°C. What is the thermal conductivity in W/m•K of the metal alloy.

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter17: Energy In Thermal Processes: The First Law Of Thermodynamics

Section: Chapter Questions

Problem 69P: An aluminum rod 0.500 m in length and with a cross-sectional area of 2.50 cm2 is inserted into a...

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