Problem 3. Consider a heater in the form of a hollow sphere perfectly insulated at the outside. Heat generation rate is uniform in the sphere. Water flows inside this heater at a flow rate of 1L/s with a heat transfer coefficient of h=300W/m².K. Water inlet and outlet temperatures are 25°C and 35°C respectively. Assuming good mixing inside the sphere, find the steady state temperature distribution in the heater. Neglect the effect of inlet and outlet holes. Kheater-200W/m.K.

Problem 3. Consider a heater in the form of a hollow sphere perfectly insulated at the outside. Heat generation rate is uniform in the sphere. Water flows inside this heater at a flow rate of 1L/s with a heat transfer coefficient of h=300W/m².K. Water inlet and outlet temperatures are 25°C and 35°C respectively. Assuming good mixing inside the sphere, find the steady state temperature distribution in the heater. Neglect the effect of inlet and outlet holes. Kheater-200W/m.K.

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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Question

Problem 3. Consider a heater in the form of a hollow sphere perfectly insulated at the outside.
Heat generation rate is uniform in the sphere. Water flows inside this heater at a flow rate of 1L/s
with a heat transfer coefficient of h=300W/m².K. Water inlet and outlet temperatures are 25°C
and 35°C respectively. Assuming good mixing inside the sphere, find the steady state temperature
distribution in the heater. Neglect the effect of inlet and outlet holes. Kheater=200W/m.K.
insulated
Water In
R2=10cm
hi
R1-5cm/
Heater
Water Out

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