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Question : A 100 mm- diameter, thin walled duct covered with a 50 mm-thíck layer of insulation (ki = 0.08 W/m.K) is used to carry superheated steam at atmospheric pressure is suspended from th ceiling of a large room. The air temperature is at 20 C and natural circulation provides a convectio coefficient of 10 W/m².K at the outer surface of the covered pipe. The steam enters the pipe at 120 and the velocity of the steam is 10 m/s. Evaluating the steam properties at 380 K using Table A. and assuming the pipe is 10m long, answer the following questions art(A) Using Dittus-Boelter correlation (eqn. (8.60)), compute the heat transfer coefficient for th internal flow? rt (B) What is the temperature of the steam at exit?

Question : A 100 mm- diameter, thin walled duct covered with a 50 mm-thíck layer of insulation (ki = 0.08 W/m.K) is used to carry superheated steam at atmospheric pressure is suspended from th ceiling of a large room. The air temperature is at 20 C and natural circulation provides a convectio coefficient of 10 W/m².K at the outer surface of the covered pipe. The steam enters the pipe at 120 and the velocity of the steam is 10 m/s. Evaluating the steam properties at 380 K using Table A. and assuming the pipe is 10m long, answer the following questions art(A) Using Dittus-Boelter correlation (eqn. (8.60)), compute the heat transfer coefficient for th internal flow? rt (B) What is the temperature of the steam at exit?

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
Problem 1.1MA
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2 parts ( A&B) Read and solve carefully please write clearly and box the final answer(s) label them Hint: Pay attention to numbers bolded
Question : A 100 mm- diameter, thin walled duct covered with a 50 mm-thick layer of insulation (k¡ns = 0.08 W/m.K) is used to carry superheated steam at atmospheric pressure is suspended from the ceiling of a large room. The air temperature is at 20 C and natural circulation provides a convection coefficient of 10 W/m².K at the outer surface of the covered pipe. The steam enters the pipe at 120 C and the velocity of the steam is 10 m/s. Evaluating the steam properties at 380 K using Table A.6 and assuming the pipe is 10m long, answer the following questions Part(A) Using Dittus-Boelter correlation (eqn. (8.60)), compute the heat transfer coefficient for the internal flow? Part (B) What is the temperature of the steam at exit?
Transcribed Image Text:Question : A 100 mm- diameter, thin walled duct covered with a 50 mm-thick layer of insulation (k¡ns = 0.08 W/m.K) is used to carry superheated steam at atmospheric pressure is suspended from the ceiling of a large room. The air temperature is at 20 C and natural circulation provides a convection coefficient of 10 W/m².K at the outer surface of the covered pipe. The steam enters the pipe at 120 C and the velocity of the steam is 10 m/s. Evaluating the steam properties at 380 K using Table A.6 and assuming the pipe is 10m long, answer the following questions Part(A) Using Dittus-Boelter correlation (eqn. (8.60)), compute the heat transfer coefficient for the internal flow? Part (B) What is the temperature of the steam at exit?
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