17-71 Steam at 230°C is flowing through a steel pipe (k = 15.1 W/m-°C) whose inner and outer diameters are 9 cm and 10 cm, respectively, in an environment at 13°C. The pipe is insulated with 5-cm-thick fiberglass insulation (k 0.035 W/m-°C). If the heat transfer coefficients on the inside and the outside of the pipe are 170 and 30 W/m2.°C, respec- tively, determine the rate of heat loss from the steam per meter length of the pipe. What is the error involved in neglecting the thermal resistance of the steel pipe in calculations? Steel pipe Stcum 230°C Insulation
17-71 Steam at 230°C is flowing through a steel pipe (k = 15.1 W/m-°C) whose inner and outer diameters are 9 cm and 10 cm, respectively, in an environment at 13°C. The pipe is insulated with 5-cm-thick fiberglass insulation (k 0.035 W/m-°C). If the heat transfer coefficients on the inside and the outside of the pipe are 170 and 30 W/m2.°C, respec- tively, determine the rate of heat loss from the steam per meter length of the pipe. What is the error involved in neglecting the thermal resistance of the steel pipe in calculations? Steel pipe Stcum 230°C 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:17–71 Steam at 230°C is flowing through a steel pipe
(k = 15.1 W/M•°C) whose inner and outer diameters are 9 cm
and 10 cm, respectively, in an environment at 13°C. The pipe
is insulated with 5-cm-thick fiberglass insulation (k
0.035 W/m-°C). If the heat transfer coefficients on the inside
and the outside of the pipe are 170 and 30 W/m².°C, respec-
tively, determine the rate of heat loss from the steam per meter
length of the pipe. What is the error involved in neglecting the
thermal resistance of the steel pipe in calculations?
Steel pipe
Stcum
230°C
Insulation
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