Imagine you have two concentric, coaxial cylindrical tubes with an evacuated annular space, with equal lengths L. The outer radius of the inner cylinder is r, and the inner radius of the outer cylinder is R. If we want to minimize the self-viewing factor of the inner surface of the outer cylinder, which of the following geometric changes would you suggest? r is fixed, decrease R with fixed R and L, decrease r with fixed r and R, decrease L R is fixed, increase L r is fixed, increase R

Imagine you have two concentric, coaxial cylindrical tubes with an evacuated annular space, with equal lengths L. The outer radius of the inner cylinder is r, and the inner radius of the outer cylinder is R. If we want to minimize the self-viewing factor of the inner surface of the outer cylinder, which of the following geometric changes would you suggest? r is fixed, decrease R with fixed R and L, decrease r with fixed r and R, decrease L R is fixed, increase L r is fixed, increase R

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.

Chapter8: Natural Convection

Section: Chapter Questions

Problem 8.44P

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