Consider a 0.6 m X 0.6 m epoxy laminate (k = 0.2 W/m-k) whose thickness is 5 mm. In order to reduce the thermal resistance across the thickness, cylindrical copper fillings (k = 380 W/m-k) of 2 mm diameter are evenly implanted in throughout the laminate with a spacing of 6 mm (center to center) between the fillings. a) Determine the thermal resistance of the laminate with and without the copper fillings. b) Assuming the temperature difference across the laminate is 20°C, calculate the total heat transfer rates with and without the fillings.

Consider a 0.6 m X 0.6 m epoxy laminate (k = 0.2 W/m-k) whose thickness is 5 mm. In order to reduce the thermal resistance across the thickness, cylindrical copper fillings (k = 380 W/m-k) of 2 mm diameter are evenly implanted in throughout the laminate with a spacing of 6 mm (center to center) between the fillings. a) Determine the thermal resistance of the laminate with and without the copper fillings. b) Assuming the temperature difference across the laminate is 20°C, calculate the total heat transfer rates with and without the fillings.

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.

Chapter4: Numerical Analysis Of Heat Conduction

Section: Chapter Questions

Problem 4.12P

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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) Determine the thermal resistance of the laminate with and without the copper fillings.

b) Assuming the temperature difference across the laminate is 20°C, calculate the total heat
transfer rates with and without the fillings.

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