An electrical motor of cm outside diameter and 50 cm height is provided with 12 number of longitudinal fins equally spaced in rectangular shape of 3 cm long and 0.3 cm thick. Calculate the amount of heat transferred, fin efficiency and effectiveness of the arrangement. Take thermal conductivity = 120 W/mK, heat trans fer coefficient = 10 W/m2K. Assume surface temperature of motor 100°C and surrounding temperature 30°C.
An electrical motor of cm outside diameter and 50 cm height is provided with 12 number of longitudinal fins equally spaced in rectangular shape of 3 cm long and 0.3 cm thick. Calculate the amount of heat transferred, fin efficiency and effectiveness of the arrangement. Take thermal conductivity = 120 W/mK, heat trans fer coefficient = 10 W/m2K. Assume surface temperature of motor 100°C and surrounding temperature 30°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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Transcribed Image Text:An electrical motor of cm outside diameter and
50 cm height is provided with 12 number of
longitudinal fins equally spaced in rectangular
shape of 3 cm long and 0.3 cm thick. Calculate
the amount of heat transferred, fin efficiency and
effectiveness of the arrangement. Take thermal
conductivity = 120 W/mK, heat trans fer
coefficient = 10 W/m2K. Assume surface
temperature of motor 100°C and surrounding
temperature 30°C.
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