A hollow spherical container with thermal conductivity of 25W / m * K and an inner diameter of 28cm and outer diameter of 30cm is kept at an inner surface temperature of 400K . The spherical container is covered with 2 insulating materials having a thickness of 7cm and 8cm, respectively . The thermal conductivity of two insulating materials is 0.18 W/mK. Determine the conduction transfer rate of the spherical container and the intermediate temperature , if the outermost temperature is 270K. Draw schematic diagram and show your solution,

A hollow spherical container with thermal conductivity of 25W / m * K and an inner diameter of 28cm and outer diameter of 30cm is kept at an inner surface temperature of 400K . The spherical container is covered with 2 insulating materials having a thickness of 7cm and 8cm, respectively . The thermal conductivity of two insulating materials is 0.18 W/mK. Determine the conduction transfer rate of the spherical container and the intermediate temperature , if the outermost temperature is 270K. Draw schematic diagram and show your solution,

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 hollow spherical container
with thermal conductivity of
25W / m * Kand an inner
diameter of 28cm and outer
diameter of 30cm is kept at
an inner surface
temperature of 400K . The
spherical container is
covered with 2 insulating
materials having a thickness
of 7cm and 8cm,
respectively . The thermal
conductivity of two
insulating materials is 0.18
W/mK. Determine the
conduction transfer rate of
the spherical container and
the intermediate
temperature , if the
outermost temperature is
270K. Draw schematic
diagram and show your
solution .

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