2. A hot gas at 330°C with convection coefficient 222 W/m²-K is flowing through a steel tube of outsidediameter 8 cm and thickness 1.3 cm. It is covered with an insulating material of thickness 2 cm, havingconductivity of 0.2 W/m-K. The outer surface of insulation is exposed to ambient air at 25°C with convectioncoefficient of 55 W/m²-K. Calculate the following in SI unit:a. heat loss to air from 5 m long tube.b. the temperature drops due to thermal resistance of the hot gases, steel tube, the insulationlayer and the outside air. Take conductivity of steel 50 W/m-K.

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2. A hot gas at 330°C with convection coefficient 222 W/m²-K is flowing through a steel tube of outside diameter 8 cm and thickness 1.3 cm. It is covered with an insulating material of thickness 2 cm, having

2. A hot gas at 330°C with convection coefficient 222 W/m²-K is flowing through a steel tube of outside diameter 8 cm and thickness 1.3 cm. It is covered with an insulating material of thickness 2 cm, having

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

2. A hot gas at 330°C with convection coefficient 222 W/m²-K is flowing through a steel tube of outside
diameter 8 cm and thickness 1.3 cm. It is covered with an insulating material of thickness 2 cm, having
conductivity of 0.2 W/m-K. The outer surface of insulation is exposed to ambient air at 25°C with convection
coefficient of 55 W/m²-K. Calculate the following in SI unit:
a. heat loss to air from 5 m long tube.
b. the temperature drops due to thermal resistance of the hot gases, steel tube, the insulation
layer and the outside air. Take conductivity of steel 50 W/m-K.

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heat trasnsfer
Example of engineering application using Convection heat transfer. And draw a diagram of convection heat transfer. Note: Agricultural Machines only.