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A 3-inch Sched 40 steel pipe has a thermal conductivity of k = 15 W/m ° C covered with a 2.5 cm layer of insulating material (k = 0.2 W/m °C). Air at 204/45 °C with h = 400 W/m² °C flows inside the tube. The outer surface of the insulating material is exposed to a cooler air at 30 °C with h = 60 W/m K. Solve for the heat loss for 15m length of pipe and the temperature at the interface of the steel pipe and the insulating material. Answer must be in SI unit.

A 3-inch Sched 40 steel pipe has a thermal conductivity of k = 15 W/m ° C covered with a 2.5 cm layer of insulating material (k = 0.2 W/m °C). Air at 204/45 °C with h = 400 W/m² °C flows inside the tube. The outer surface of the insulating material is exposed to a cooler air at 30 °C with h = 60 W/m K. Solve for the heat loss for 15m length of pipe and the temperature at the interface of the steel pipe and the insulating material. Answer must be in SI unit.

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 3-inch Sched 40 steel pipe has a thermal conductivity of k = 15 W/m ° C covered with a 2.5 cm layer of insulating material (k = 0.2 W/m °C). Air at 204/45 °C with h = 400 W/m² °C flows inside the tube. The outer surface of the insulating material is exposed to a cooler air at 30 °C with h = 60 W/m K. Solve for the heat loss for 15m length of pipe and the temperature at the interface of the steel pipe and the insulating material. Answer must be in SI unit.
Transcribed Image Text:A 3-inch Sched 40 steel pipe has a thermal conductivity of k = 15 W/m ° C covered with a 2.5 cm layer of insulating material (k = 0.2 W/m °C). Air at 204/45 °C with h = 400 W/m² °C flows inside the tube. The outer surface of the insulating material is exposed to a cooler air at 30 °C with h = 60 W/m K. Solve for the heat loss for 15m length of pipe and the temperature at the interface of the steel pipe and the insulating material. Answer must be in SI unit.
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