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7-Air, at 100 °C, flows through a thin-walled steel tube with an inside diameter 25 mm. The wall thickness is 0.5 mm. Thermal conductivity of the steel is 40 W/mk. The tube is exposed to an environment at 20 °C with heat transfer coefficient of 10 W/m2K. The film coefficient at the inner surface is 50 W/m2K. Calculate (i) Overall heat transfer coefficient, Ui, (ii) Heat loss per m length,

7-Air, at 100 °C, flows through a thin-walled steel tube with an inside diameter 25 mm. The wall thickness is 0.5 mm. Thermal conductivity of the steel is 40 W/mk. The tube is exposed to an environment at 20 °C with heat transfer coefficient of 10 W/m2K. The film coefficient at the inner surface is 50 W/m2K. Calculate (i) Overall heat transfer coefficient, Ui, (ii) Heat loss per m length,

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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7-Air, at 100 °C, flows through a thin-walled steel tube with an inside diameter 25 mm. The wall thickness is 0.5 mm. Thermal conductivity of the steel is 40 W/mk. The tube is exposed to an environment at 20 °C with heat transfer coefficient of 10 W/m2K. The film coefficient at the inner surface is 50 W/m2K. Calculate (i) Overall heat transfer coefficient, Ui, (ii) Heat loss per m length,
Transcribed Image Text:7-Air, at 100 °C, flows through a thin-walled steel tube with an inside diameter 25 mm. The wall thickness is 0.5 mm. Thermal conductivity of the steel is 40 W/mk. The tube is exposed to an environment at 20 °C with heat transfer coefficient of 10 W/m2K. The film coefficient at the inner surface is 50 W/m2K. Calculate (i) Overall heat transfer coefficient, Ui, (ii) Heat loss per m length,
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