A 60mm diameter pipe of circular cross section and with walls 2 mm thick is covered with two concentric layers of lagging, the inner layer having a thickness of 25mm and a thermal conductivity of 0.08W/mK and the outer layer having a thickness of 35 mm and a thermal conductivity of 0.04 W/mK. Estimate the rate of heat loss per meter length of pipe if the temperature inside the pipe is 510K and the outside surface temperature is 320K for the pipe material is 43 W/mK.
A 60mm diameter pipe of circular cross section and with walls 2 mm thick is covered with two concentric layers of lagging, the inner layer having a thickness of 25mm and a thermal conductivity of 0.08W/mK and the outer layer having a thickness of 35 mm and a thermal conductivity of 0.04 W/mK. Estimate the rate of heat loss per meter length of pipe if the temperature inside the pipe is 510K and the outside surface temperature is 320K for the pipe material is 43 W/mK.
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 60mm diameter pipe of circular cross section and with walls 2 mm thick is covered with two concentric layers of lagging, the inner layer having a thickness of 25mm and a thermal conductivity of 0.08W/mK and the outer layer having a thickness of 35 mm and a thermal conductivity of 0.04 W/mK. Estimate the rate of heat loss per meter length of pipe if the temperature inside the pipe is 510K and the outside surface temperature is 320K for the pipe material is 43 W/mK.
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