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1) Hot water at an average temperature of 60°C is flowing through a 10-m section of a cast iron pipe (k = 50 W/m K) whose the inner diameter and thickness are 30 mm and 2.5 mm, respectively. the pipe is covered with a 3.0-cm-thick layer of an insulation (k = 0.20 W/m K). The surrounding air is at 10°C. The inside and outside heat transfer coefficients are 100 and 15 W/m2 K, respectivel,

1) Hot water at an average temperature of 60°C is flowing through a 10-m section of a cast iron pipe (k = 50 W/m K) whose the inner diameter and thickness are 30 mm and 2.5 mm, respectively. the pipe is covered with a 3.0-cm-thick layer of an insulation (k = 0.20 W/m K). The surrounding air is at 10°C. The inside and outside heat transfer coefficients are 100 and 15 W/m2 K, respectivel,

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
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1) Hot water at an average temperature of 60°C is flowing through a 10-m section of a cast iron pipe (k = 50 W/m K) whose the inner diameter and thickness are 30 mm and 2.5 mm, respectively. the pipe is covered with a 3.0-cm-thick layer of an insulation (k 0.20 !! W/m K). The surrounding air is at 10°C. The inside and outside heat transfer coefficients are 100 and 15 W/m2 K, respectivel, Required: Draw the thermal resistance network (thermal circuit) and label the associated resistances and determine the following: a) the individual thermal resistances associated with the thermal circuit. b) the total thermal resistance value. c) the rate of heat transfer d) the temperature difference across the pipe shell
Transcribed Image Text:1) Hot water at an average temperature of 60°C is flowing through a 10-m section of a cast iron pipe (k = 50 W/m K) whose the inner diameter and thickness are 30 mm and 2.5 mm, respectively. the pipe is covered with a 3.0-cm-thick layer of an insulation (k 0.20 !! W/m K). The surrounding air is at 10°C. The inside and outside heat transfer coefficients are 100 and 15 W/m2 K, respectivel, Required: Draw the thermal resistance network (thermal circuit) and label the associated resistances and determine the following: a) the individual thermal resistances associated with the thermal circuit. b) the total thermal resistance value. c) the rate of heat transfer d) the temperature difference across the pipe shell
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