A resistor provide energy to a metal block 20 cm wide with a conductivity of 120 W/m.k. The temperature on the metal block near the resistor side is 70 °C. The heat travel to the other side of the block. On the other side, air is cooling the metal block. The convective heat transfer coefficient for air is 300 W/m².k. Calculate the energy of the resistor in KW/m2 such that the air temperature near other side of the block is 0°C.

A resistor provide energy to a metal block 20 cm wide with a conductivity of 120 W/m.k. The temperature on the metal block near the resistor side is 70 °C. The heat travel to the other side of the block. On the other side, air is cooling the metal block. The convective heat transfer coefficient for air is 300 W/m².k. Calculate the energy of the resistor in KW/m2 such that the air temperature near other side of the block is 0°C.

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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Question

A resistor provide energy to a metal block 20 cm wide with a conductivity of 120 W/m.k. The temperature on the metal
block near the resistor side is 70 °C. The heat travel to the other side of the block. On the other side, air is cooling the
metal block. The convective heat transfer coefficient for air is 300 W/m².k. Calculate the energy of the resistor in KW/m2
such that the air temperature near other side of the block is 0°C.

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