A 30 m long pipe with an external diameter of 75 mm is being used to convey steam at a rate of 1000 kg/h. The steam pressure is 198.53 kPa. The steam enters the pipe with a dryness fraction of 0.98 and must leave the other end of the pipe with a minimum dryness fraction of 0.95. Insulation with a thermal conductivity of 0.2 W/(m K) is available. Determine the minimum thickness of insulation necessary. * Indicates an advanced level of difficulty in solving. 400 CHAPTER 4 Heat Transfer in Food Processing The outside surface temperature of insulation is assumed to be 258C. Neglect the conductive resistance of the pipe material and assume no pressure drop across the pipe
A 30 m long pipe with an external diameter of 75 mm is being used to convey steam at a rate of 1000 kg/h. The steam pressure is 198.53 kPa. The steam enters the pipe with a dryness fraction of 0.98 and must leave the other end of the pipe with a minimum dryness fraction of 0.95. Insulation with a thermal conductivity of 0.2 W/(m K) is available. Determine the minimum thickness of insulation necessary. * Indicates an advanced level of difficulty in solving. 400 CHAPTER 4 Heat Transfer in Food Processing The outside surface temperature of insulation is assumed to be 258C. Neglect the conductive resistance of the pipe material and assume no pressure drop across the pipe
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
A 30 m long pipe with an external diameter of 75 mm is
being used to convey steam at a rate of 1000 kg/h. The steam
pressure is 198.53 kPa. The steam enters the pipe with a
dryness fraction of 0.98 and must leave the other end of the
pipe with a minimum dryness fraction of 0.95. Insulation
with a thermal conductivity of 0.2 W/(m K) is available.
Determine the minimum thickness of insulation necessary.
* Indicates an advanced level of difficulty in solving.
400 CHAPTER 4 Heat Transfer in Food Processing
The outside surface temperature of insulation is assumed to
be 258C. Neglect the conductive resistance of the pipe
material and assume no pressure drop across the pipe
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