The engine cylinder of a motorcycle is constructed of aluminum alloy ((T= 400 Kk 186 W/m. K) and is of height H 0.15 mand outside diameter D 50 mm. Under typical operating conditions the outer surface of the cylinder is at a temperature of 500 Kand is exposed to ambient air at300 K with afconvection coefficient of 50 W/m K Annular fins are integrally cast with the cylinder to increase heat transfer to the surroundings. Consider five such fins, which are of thicknesst =6 mm.length L = 20 mm, and equally spaced. What is the increase in heat transfer due to use of %3D %3! the fins?

The engine cylinder of a motorcycle is constructed of aluminum alloy ((T= 400 Kk 186 W/m. K) and is of height H 0.15 mand outside diameter D 50 mm. Under typical operating conditions the outer surface of the cylinder is at a temperature of 500 Kand is exposed to ambient air at300 K with afconvection coefficient of 50 W/m K Annular fins are integrally cast with the cylinder to increase heat transfer to the surroundings. Consider five such fins, which are of thicknesst =6 mm.length L = 20 mm, and equally spaced. What is the increase in heat transfer due to use of %3D %3! the fins?

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

C- The engine cylinder of a motorcycle is constructed of aluminum allov T= 400 K)k=186 W/m. K) and is of height
H 0.15 mand outside diameter D= 50 mm. Under typical operating conditions the outer surface of the cylinder is
at a temperature of 500 Kand is exposed to ambient air at300 K with afconvection coefficient of 50 W/m K, Annular
fins are integrally cast with the cylinder to increase heat transfer to the surroundings. Consider five such fins, which
are of thicknesst =6 mmlength L = 20 mm, and equally spaced. What is the increase in heat transfer due to use of
the fins?
T= 300 A
h- 50 W/mA
Ty500 K
H= 015 m
It= 6nm
F 25
L= 20mm
45mm
!!

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