A composite wall is formed of a 2.5 cm copper plate, a 3.2 mm layer of asbestos, and a 5 cm layer of fiberglass. The wall is subjected to an overall temperature difference of 560oC. Calculate the heat flux through the composite structure

A composite wall is formed of a 2.5 cm copper plate, a 3.2 mm layer of asbestos, and a 5 cm layer of fiberglass. The wall is subjected to an overall temperature difference of 560oC. Calculate the heat flux through the composite structure

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.

Chapter1: Basic Modes Of Heat Transfer

Section: Chapter Questions

Problem 1.38P

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Concept explainers

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.

Question

A composite wall is formed of a 2.5 cm copper plate, a 3.2 mm layer of asbestos,
and a 5 cm layer of fiberglass. The wall is subjected to an overall temperature
difference of 560oC. Calculate the heat flux through the composite structure.

Expert Solution

Step 1

given data

copper plate thickness =2.5 cm=0.025 m

asbestos thickness= 3.2 cm= 0.032 m

fiberglass thickness= 5 cm= 0.05 m

overall temperature= 560 degree c

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Solved in 2 steps

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