n the pipe resulting in a ce V/m2 K at the inner surfac he exterior pipe surface 8 m. at flux to the pine from the c
n the pipe resulting in a ce V/m2 K at the inner surfac he exterior pipe surface 8 m. at flux to the pine from the c
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
Related questions
Question
![5.41 A steel pipe 1 m in diameter and 40 mm wall thickness is heavily insulated
on the outside and is originally at -20°C. A hot oil at 60°C is now
pumped through the pipe resulting in a convective surface condition
with h
= 500 W/m2 K at the inner surface of the pipe. What is the
temperature of the exterior pipe surface 8 min after the start of flow. Also
calculate the heat flux to the pipe from the oil and the energy transferred
per metre of pipe length from the oil to the pipe at/ = 8 min. (For steel at
20°C, p =
O= 18.8 x 10-6 m2/s)
434 J/kg. K, k = 63.9 W/mK,
[41°C,-8000 W/m2,-2.6x 107 J/m]
7823 kg/m, c =](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F61c6b899-1b04-4a80-810d-e72a368b9bf5%2F820eb802-4fbf-4ce1-a302-41c71dad6558%2Fokvkks7_processed.jpeg&w=3840&q=75)
Transcribed Image Text:5.41 A steel pipe 1 m in diameter and 40 mm wall thickness is heavily insulated
on the outside and is originally at -20°C. A hot oil at 60°C is now
pumped through the pipe resulting in a convective surface condition
with h
= 500 W/m2 K at the inner surface of the pipe. What is the
temperature of the exterior pipe surface 8 min after the start of flow. Also
calculate the heat flux to the pipe from the oil and the energy transferred
per metre of pipe length from the oil to the pipe at/ = 8 min. (For steel at
20°C, p =
O= 18.8 x 10-6 m2/s)
434 J/kg. K, k = 63.9 W/mK,
[41°C,-8000 W/m2,-2.6x 107 J/m]
7823 kg/m, c =
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