Question 2.2 Two 3 m long and 0.4 cm thick cast iron (k= 52 W/m-K) steam pipes, of outer diameter 10 cm, are connected to each other through two, 1 cm thick, flanges of outer diameter 20 cm. The steam flows inside the pipe at an average temperature of 200°C with a heat transfer coefficient of 180 W/m2 K. The outer surface of the pipe is exposed to an ambient at 12°C, with a heat transfer coefficient of 25 W/m2 K. a. Disregard the flanges and determine the average outer surface temperature of the pipe. b. Make an informed assumption about the flanges and determine the added efficiency of the flange as well as the rate of heat transfer from the flanges. c. What length of pipe is the flange section equivalent to for heat transfer purposes?

Question 2.2 Two 3 m long and 0.4 cm thick cast iron (k= 52 W/m-K) steam pipes, of outer diameter 10 cm, are connected to each other through two, 1 cm thick, flanges of outer diameter 20 cm. The steam flows inside the pipe at an average temperature of 200°C with a heat transfer coefficient of 180 W/m2 K. The outer surface of the pipe is exposed to an ambient at 12°C, with a heat transfer coefficient of 25 W/m2 K. a. Disregard the flanges and determine the average outer surface temperature of the pipe. b. Make an informed assumption about the flanges and determine the added efficiency of the flange as well as the rate of heat transfer from the flanges. c. What length of pipe is the flange section equivalent to for heat transfer purposes?

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Description: Question 2.2Two 3 m long and 0.4 cm thick cast iron (k= 52 W/m-K) steam pipes, of outerdiameter 10 cm, are connected to each other through two, 1 cm thick, flanges ofouter diameter 20 cm. The steam flows inside the pipe at an average temperature of2

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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