A silicon wafer of diameter D 120 mm, and emissvity of 0.6 is cool in quiescent, ambient air and large surroundings for which Tair Tsur 35oC. What is the rate of cooling from the upper surface of the wafer? Properties of Air:k0.0373 W/m.Cv32.3910-6 m2 alpha 47.2106 m2s P0.686 B- 1/Tf - 0.0022 K-1. nitial tem Select one: O a. 344 W O b. 53 W O . 627 W O d. 86 W

A silicon wafer of diameter D 120 mm, and emissvity of 0.6 is cool in quiescent, ambient air and large surroundings for which Tair Tsur 35oC. What is the rate of cooling from the upper surface of the wafer? Properties of Air:k0.0373 W/m.Cv32.3910-6 m2 alpha 47.2106 m2s P0.686 B- 1/Tf - 0.0022 K-1. nitial tem Select one: O a. 344 W O b. 53 W O . 627 W O d. 86 W

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.

Chapter9: Heat Transfer With Phase Change

Section: Chapter Questions

Problem 9.39P

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