To increase the rate of heat transfer from a device, which has 0.1 m² of exposed surface, you added 500 pin fins of 4 cm length and 2 mm diameter on top of the device's exposed surface. How much (i.e., by what factor) did the rate of total heat transfer rate (from the surface) increase? Assume that the convection coefficient is 42 W/m².K, and the thermal conductivity of the fin material is 240 W/m.K. Neglect radiation.

To increase the rate of heat transfer from a device, which has 0.1 m² of exposed surface, you added 500 pin fins of 4 cm length and 2 mm diameter on top of the device's exposed surface. How much (i.e., by what factor) did the rate of total heat transfer rate (from the surface) increase? Assume that the convection coefficient is 42 W/m².K, and the thermal conductivity of the fin material is 240 W/m.K. Neglect radiation.

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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