I need the answer as soon as possible 3-126 Two 3-m-long and 0.4-cm-thick cast iron (k =52 W/m-K) steam pipes of outer diameter 10 cm are connectedto each other through two 1-cm-thick flanges of outer diameter20 cm. The steam flows inside the pipe at an average tempera-ture 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) Disregardingthe flanges, determine the average outer surface temperature ofthe pipe. (b) Using this temperature for the base of the flange andtreating the flanges as the fins, determine the fin efficiency andthe rate of heat transfer from the flanges. (c) What length of pipeis the flange section equivalent to for heat transfer purposes?-10 cm+9.2 cmT = 12°CI cm20 cmSteam200°CFIGURE P3-126

Answered: Image /qna-images/answer/bd3bb729-6bf1-4cfe-a0e0-857246f872d9.jpg

3-126 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 tempera- ture 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) Disregarding the flanges, determine the average outer surface temperature of the pipe. (b) Using this temperature for the base of the flange and treating the flanges as the fins, determine the fin efficiency and the rate of heat transfer from the flanges. (c) What length of pipe is the flange section equivalent to for heat transfer purposes? -10 cm- 9.2 cm T = 12°C i cm 20 cm Steam 200°C

3-126 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 tempera- ture 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) Disregarding the flanges, determine the average outer surface temperature of the pipe. (b) Using this temperature for the base of the flange and treating the flanges as the fins, determine the fin efficiency and the rate of heat transfer from the flanges. (c) What length of pipe is the flange section equivalent to for heat transfer purposes? -10 cm- 9.2 cm T = 12°C i cm 20 cm Steam 200°C

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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