gas at 450K is flowing inside a 2-in steel pipe, schedule 40. The pipe is insulated with 51 mm of lagging having a mean k = 0.0623 W/mK. The convective heat transfer coefficient of the gas inside the pipe is 30.7 W/m²K and the convective coefficient on the outside surface of the lagging is 10.8 W/m²K. The air is at a temperature 300 K. (a) Calculate the heat loss per unit length of 1 m of pipe using resistances (b) Repeat using the overall Uo based on the outside area Ao.
gas at 450K is flowing inside a 2-in steel pipe, schedule 40. The pipe is insulated with 51 mm of lagging having a mean k = 0.0623 W/mK. The convective heat transfer coefficient of the gas inside the pipe is 30.7 W/m²K and the convective coefficient on the outside surface of the lagging is 10.8 W/m²K. The air is at a temperature 300 K. (a) Calculate the heat loss per unit length of 1 m of pipe using resistances (b) Repeat using the overall Uo based on the outside area Ao.
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 gas at 450K is flowing inside a 2-in steel pipe, schedule 40. The pipe is insulated with 51 mm of lagging having a mean k = 0.0623 W/mK. The convective heat transfer coefficient of the gas inside the pipe is 30.7 W/m²K and the convective coefficient on the outside surface of the lagging is 10.8 W/m²K. The air is at a temperature 300 K. (a) Calculate the heat loss per unit length of 1 m of pipe using resistances (b) Repeat using the overall Uo based on the outside area Ao.
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