Q2) Vapor at 225°C passes inside a stainless steel tube with length of (L-1m) and thermal conductivity of (k-65 W/m"C). The inner and outer tube diameters are 7.5cm and 9.5 cm, respectively, in an environment temperature of 25'C. The heat transfer coeffcients of the vapor and environment are 103 W/m2 C and 12 W/m2"C, respectively. Determine: (a) the thickness of the insulation (k-0.024 W/m"C) needed on the outer surface of the tube to reduce the heat loss by 94 percent, and (b) estimate the temperature of the outer surface of the insulation.
Q2) Vapor at 225°C passes inside a stainless steel tube with length of (L-1m) and thermal conductivity of (k-65 W/m"C). The inner and outer tube diameters are 7.5cm and 9.5 cm, respectively, in an environment temperature of 25'C. The heat transfer coeffcients of the vapor and environment are 103 W/m2 C and 12 W/m2"C, respectively. Determine: (a) the thickness of the insulation (k-0.024 W/m"C) needed on the outer surface of the tube to reduce the heat loss by 94 percent, and (b) estimate the temperature of the outer surface of the insulation.
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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Transcribed Image Text:Q2) Vapor at 225'C passes inside a stainless steel tube with length of (L-1m)
and thermal conductivity of (k-65 W/m "C). The inner and outer tube diameters
are 7.5 cm and 9.5 cm, respectively, in an environment temperature of 25'C. The
heat transfer coeffcients of the vapor and environment are 103 W/m2"C and 12
W/m2 C, respectively. Determine: (a) the thickness of the insulation (k-0.024
W/m"C) needed on the outer surface of the tube to reduce the heat loss by 94
percent, and (b) estimate the temperature of the outer surface of the insulation.
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