Q3 ) A 2-kW resistance heater wire with thermal conductivity of k 20 W/m °C, a diameter of D = 5 mm, and a length of L = 0.7 m is used to boil water. If the outer surface temperature of the resistance wire is Ts = 110°C, determine the temperature at the center of the wire. Ans: 121.4 °C 110°C -Resistance heater

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
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Q3 ) A 2-KW resistance heater wire with thermal conductivity of k 20 W/m • °C,
a diameter of D = 5 mm, and a length of L = 0.7 m is used to boil water. If
the outer surface temperature of the resistance wire is Ts = 110°C, determine
the temperature at the center of the wire.
Ans: 121.4 °C
110°C
-Resistance
heater
Transcribed Image Text:Q3 ) A 2-KW resistance heater wire with thermal conductivity of k 20 W/m • °C, a diameter of D = 5 mm, and a length of L = 0.7 m is used to boil water. If the outer surface temperature of the resistance wire is Ts = 110°C, determine the temperature at the center of the wire. Ans: 121.4 °C 110°C -Resistance heater
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