Q2 : A 2 kW resistance heater wire with thermal conductivity of k = 20 W/m °C, adiameter of D = 5 mm, and a length of L3D0.7 m is used to boil water. If the outer surfacetemperature of the resistance wire is Ts = 110°C, determine the temperature at the centerof the wire.Ans : 121.4 °C

Answered: Image /qna-images/answer/777ff213-d95a-4145-8999-b7e4b6a03c20.jpg

Q2 : 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

Q2 : 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

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)

8th Edition

ISBN:9781305387102

Author:Kreith, Frank; Manglik, Raj M.

Publisher:Kreith, Frank; Manglik, Raj M.

Chapter2: Steady Heat Conduction

Section: Chapter Questions

Problem 2.60P

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Concept explainers

Mechanisms of heat transfer

Heat transfer is an essential discipline in thermal engineering that deals with the transfer, conversion, usability, and creation of heat or thermal energy. Transfer of heat occurs through various mechanisms like conduction, convection, radiation, and change of phases. All these mechanisms have distinct characteristics, but these mechanisms can simultaneously occur in an identical system.

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Q2 : 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 L3D0.7 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

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