At the start of the following situation, determine the heat transfer contributions of each heat transfer pathway, and state the direction of each heat transfer and which dominates. A 1m diameter ball of iron is immersed in stagnant liquid water; both are perfect blackbodies. The sphere is a uniform 100 degC while the water is 20 deg C. Conduction can be assumed to occur over a 1 cm length distance away from the sphere. Neglect any temperature gradients that would be established. Other key þarameters for the situation are: Hcony = 100 W/(m2 K) Kcond = 0.6 W/(m K) Stefan-Boltzmann constant = 5.67E-8 W/(m2 K4)

At the start of the following situation, determine the heat transfer contributions of each heat transfer pathway, and state the direction of each heat transfer and which dominates. A 1m diameter ball of iron is immersed in stagnant liquid water; both are perfect blackbodies. The sphere is a uniform 100 degC while the water is 20 deg C. Conduction can be assumed to occur over a 1 cm length distance away from the sphere. Neglect any temperature gradients that would be established. Other key þarameters for the situation are: Hcony = 100 W/(m2 K) Kcond = 0.6 W/(m K) Stefan-Boltzmann constant = 5.67E-8 W/(m2 K4)

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.

Chapter4: Numerical Analysis Of Heat Conduction

Section: Chapter Questions

Problem 4.11P

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