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Consider a surface with a surface area Aç = 10 cm²2. The right side of the surface is in contact with atmospheric air at Too = 20 °C and h = 10 W.m-2.K-¹. The left side of the surface is under a constant heat rate (qs). 1) If the surface temperature is T, = 120 °C, find the magnitude of heat rate (qs =?). 95=? A,=10 cm² T, 120 °C

Consider a surface with a surface area Aç = 10 cm²2. The right side of the surface is in contact with atmospheric air at Too = 20 °C and h = 10 W.m-2.K-¹. The left side of the surface is under a constant heat rate (qs). 1) If the surface temperature is T, = 120 °C, find the magnitude of heat rate (qs =?). 95=? A,=10 cm² T, 120 °C

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
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Problem 03: Consider a surface with a surface area Aç = 10 cm². The right side of the surface is in contact with atmospheric air at Too = 20 °C and h = 10 W.m-2.K-¹. The left side of the surface is under a constant heat rate (qs). A,=10 cm² T, 120 °C 1) If the surface temperature is T, = 120 °C, find the magnitude of heat rate (qs =?). 95=? To increase the rate of heat transfer from the surface, a long cylinder (D = 4 mm) made of 400 W.m-¹.K-¹) is attached to it. (k copper 2) Find qs if the surface temperature should be kept constant at Ts = 120 °C. 3) What is the temperature of cylinder at x = 10 cm? 4) What is the approximate length of the cylinder (L)? Aç=10 cm² T, 120 °C k = 400 W.m³¹.K¹ D=4 mm 9:=? =
Transcribed Image Text:Problem 03: Consider a surface with a surface area Aç = 10 cm². The right side of the surface is in contact with atmospheric air at Too = 20 °C and h = 10 W.m-2.K-¹. The left side of the surface is under a constant heat rate (qs). A,=10 cm² T, 120 °C 1) If the surface temperature is T, = 120 °C, find the magnitude of heat rate (qs =?). 95=? To increase the rate of heat transfer from the surface, a long cylinder (D = 4 mm) made of 400 W.m-¹.K-¹) is attached to it. (k copper 2) Find qs if the surface temperature should be kept constant at Ts = 120 °C. 3) What is the temperature of cylinder at x = 10 cm? 4) What is the approximate length of the cylinder (L)? Aç=10 cm² T, 120 °C k = 400 W.m³¹.K¹ D=4 mm 9:=? =
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