A hot-water pipe (k = 50 W/m K) for house heating in winter season, made of 3/4-inch schedule 40 pipe (OD = 25.5 mm; thickness = 2.0 mm) is 10 meters long and contains water at 60 C. The air around the pipe is at 20C. The heat transfer coefficient inside and outside the pipe are 1,120 W/m2 K and 15 W/m2 K, respectively. Insulation with thermal conductivity of 20 W/m K is to be added to the pipe. Determine the heat loss from the pipe due to insulation of 120 mm thick.
A hot-water pipe (k = 50 W/m K) for house heating in winter season, made of 3/4-inch schedule 40 pipe (OD = 25.5 mm; thickness = 2.0 mm) is 10 meters long and contains water at 60 C. The air around the pipe is at 20C. The heat transfer coefficient inside and outside the pipe are 1,120 W/m2 K and 15 W/m2 K, respectively. Insulation with thermal conductivity of 20 W/m K is to be added to the pipe. Determine the heat loss from the pipe due to insulation of 120 mm thick.
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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A hot-water pipe (k = 50 W/m K) for house heating in winter season, made of 3/4-inch schedule 40 pipe (OD = 25.5 mm; thickness = 2.0 mm) is 10 meters long and contains water at 60 C. The air around the pipe is at 20C. The heat transfer coefficient inside and outside the pipe are 1,120 W/m2 K and 15 W/m2 K, respectively. Insulation with thermal conductivity of 20 W/m K is to be added to the pipe. Determine the heat loss from the pipe due to insulation of 120 mm thick.
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