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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)

Elements Of Electromagnetics
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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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 parameters for the situation are: Hconv = 100 W/(m2 K) Kcond = 0.6 WI(m K) Stefan-Boltzmann constant 5.67E-8 WI(m2 K4) %3D
Transcribed Image Text: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 parameters for the situation are: Hconv = 100 W/(m2 K) Kcond = 0.6 WI(m K) Stefan-Boltzmann constant 5.67E-8 WI(m2 K4) %3D
Expert Solution
Step 1

Given

  Temperature, T1 = 100oC

                      T2 = 20oC

      Thickness, L = 1 cm

     Diameter, d1 = 1m

Thermal conductivity, k = 0.6 W/mK

Find

  Heat transfer rate in each mode

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