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Q2: A circular tube transmits hot oil at 250-C inside a 10-cm-inside-diameter tube such that hi 2000 W/m2. C, and ho= 100 W/m2.-C. The tube has a wall thickness of 6 mm with a thermal conductivity of 16 W/m C. The ambient air is at 30 C. 1) Calculate the heat loss per unit length. 2) Find an isulation thickness with k 0.17 W/m •C so that heat loss will reduce by half of no insulation case.

Q2: A circular tube transmits hot oil at 250-C inside a 10-cm-inside-diameter tube such that hi 2000 W/m2. C, and ho= 100 W/m2.-C. The tube has a wall thickness of 6 mm with a thermal conductivity of 16 W/m C. The ambient air is at 30 C. 1) Calculate the heat loss per unit length. 2) Find an isulation thickness with k 0.17 W/m •C so that heat loss will reduce by half of no insulation case.

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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Q2: A circular tube transmits hot oil at 250-C inside a 10-cm-inside-diameter tube such that hi 2000 W/m2. C, and ho= 100 W/m2.C. The tube has a wall thickness of 6 mm with a thermal conductivity of 16 W/m- C. The ambient air is at 30 C. 1) Calculate the heat loss per unit length. 2) Find an isulation thickness with k=0.17 W/m •C so that heat loss will reduce by half of no insulation case.
Transcribed Image Text:Q2: A circular tube transmits hot oil at 250-C inside a 10-cm-inside-diameter tube such that hi 2000 W/m2. C, and ho= 100 W/m2.C. The tube has a wall thickness of 6 mm with a thermal conductivity of 16 W/m- C. The ambient air is at 30 C. 1) Calculate the heat loss per unit length. 2) Find an isulation thickness with k=0.17 W/m •C so that heat loss will reduce by half of no insulation case.
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