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A thick cylindrical pipe with length of 1 m and an inner diameter of 20 mm and an outer diameter of 120 mm is insulated with two layers of insulating materials. The thermal conductivity and thickness of each insulating material are as follows: Pipe k = 500 W/m-K, Insulator A = 0.10 W/m-K ; thickness = 30 mm Insulator B = 0.05 W/m-K; thickness = 30 mm Air at 200 C is flowing through the pipe. The temperature of the outer surface of the pipe is 43 C. Steady state heat transfer is occurring across radial direction. The heat transfer coefficient are as follows : h inside = 25 W/m²K and h outside = 45 W/m²K Calculate the total heat loss, the overall heat transfer coefficient, the temperature between the insulator A and B, and the temperature between the outer diameter and insulator A.

A thick cylindrical pipe with length of 1 m and an inner diameter of 20 mm and an outer diameter of 120 mm is insulated with two layers of insulating materials. The thermal conductivity and thickness of each insulating material are as follows: Pipe k = 500 W/m-K, Insulator A = 0.10 W/m-K ; thickness = 30 mm Insulator B = 0.05 W/m-K; thickness = 30 mm Air at 200 C is flowing through the pipe. The temperature of the outer surface of the pipe is 43 C. Steady state heat transfer is occurring across radial direction. The heat transfer coefficient are as follows : h inside = 25 W/m²K and h outside = 45 W/m²K Calculate the total heat loss, the overall heat transfer coefficient, the temperature between the insulator A and B, and the temperature between the outer diameter and insulator A.

Introduction to Chemical Engineering Thermodynamics
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
Problem 1.1P
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A thick cylindrical pipe with length of 1 m and an inner diameter of 20 mm and an outer diameter of 120 mm is insulated with two layers of insulating materials. The thermal conductivity and thickness of each insulating material are as follows: Pipe k = 500 W/m-K, Insulator A = 0.10 W/m-K ; thickness = 30 mm Insulator B = 0.05 W/m-K; thickness = 30 mm Air at 200 C is flowing through the pipe. The temperature of the outer surface of the pipe is 43 C. Steady state heat transfer is occurring across radial direction. The heat transfer coefficient are as follows : h inside = 25 W/m²K and h outside = 45 W/m²K Calculate the total heat loss, the overall heat transfer coefficient, the temperature between the insulator A and B, and the temperature between the outer diameter and insulator A.
Transcribed Image Text:A thick cylindrical pipe with length of 1 m and an inner diameter of 20 mm and an outer diameter of 120 mm is insulated with two layers of insulating materials. The thermal conductivity and thickness of each insulating material are as follows: Pipe k = 500 W/m-K, Insulator A = 0.10 W/m-K ; thickness = 30 mm Insulator B = 0.05 W/m-K; thickness = 30 mm Air at 200 C is flowing through the pipe. The temperature of the outer surface of the pipe is 43 C. Steady state heat transfer is occurring across radial direction. The heat transfer coefficient are as follows : h inside = 25 W/m²K and h outside = 45 W/m²K Calculate the total heat loss, the overall heat transfer coefficient, the temperature between the insulator A and B, and the temperature between the outer diameter and insulator A.
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