determine the temperature distribution along the fin surface. The thermal conductivity of theheat from a small motorcycle engine. If the average engine surface temperature is 112°C,Exercise 4.6.4 A circular fin of inner diameter 20 cm and outer diameter of 26 cm transfers124STEADY STATE HEAT CONDUCTION IN ONE DIMENSIONn material is 21 W/m C and the convective heat transfer coefficient between the fin andthe atmosphere is 120 W/m2 C. Assume an atmospheric temperature of 32 C.Exercise 4.6.5 Consider a composite wall consisting of four different materials as shownin Figure 4.16. Assuming a one-dimensional heat flow, determine the heat flow through thecomposite slab and the interfacial temperatures. kA = 200 W/m °C, kB = 20 W/m°C andkc = 40 W/m °C and kp =60 W/m °C. Assume that the areas of the surfaces B anda C areequal to 0.1 m2.Exercise 4.6.6 Consider a composite wall, which has one linearly varying cross-sectionalarea as shown in Figure 4.17. Determine the heat flow and interfacial temperatures.Thickness = 10 cm, kA = 200 W/m C, kg = 20 W/m C and kc = 40 W/hm C.Exercise 4.6.7 A plane wall (k = 20 W/m C) of thickness 40 cm has its outer surfacesmaintained at 30 C. If there is uniform internal heat generation of 0.2 MW/m' in the planewall, determine the temperature distribution in the plane wall. Solve this problem using(a) four linear elements (b) one quadratic element and (c) one modified quadratic elementwith only two nodes. Compare the results with analytical solutions.Exercise 4.6.8 A plane wall (k = 10 W/m C) of thickness 50 cm has its exterior surfacesubiected to a convection environment of 30 C with a surface heat transfer coefficient of600 W/n? C. Determine the temperature distribution in the plane wall using (a) four lin-ear elements (b) one quadratic element and (c) one modified quadratic element with onlyO nodes. Compare the results with the analytical solution. If the heat transfer coefficientincreases to 10,000 W/m C, what happens to the temperature of the exterior surface2220 °CArea = 0.2 m22 cm20 °C5 cm3 cmFigure 4.16 A composite wall

Since we are allowed to answer one question at a time. We’ll answer the first question since the…

heat from a small motorcycle engine. If the average engine surface temperature is 112 C, Exercise 4.6.4 A circular fin of inner diameter 20 cm and outer diameter of 26 cm transfers determine the temperature distribution along the fin surface. The thermal conductivity of the ATE HEAT Cmine the temperature distribution along the fin surface. The thermal conductivity of the Jin material is 21 W/m C and the convective heat transfer coefficient between the fin and the atmosphere is 120 W/m2 C. Assume an atmospheric temperature of 32 C.

heat from a small motorcycle engine. If the average engine surface temperature is 112 C, Exercise 4.6.4 A circular fin of inner diameter 20 cm and outer diameter of 26 cm transfers determine the temperature distribution along the fin surface. The thermal conductivity of the ATE HEAT Cmine the temperature distribution along the fin surface. The thermal conductivity of the Jin material is 21 W/m C and the convective heat transfer coefficient between the fin and the atmosphere is 120 W/m2 C. Assume an atmospheric temperature of 32 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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