10-32 A 1-mm-diameter nickel wire with electrical resis- tance of 0.129 2/m is submerged horizontally in water at atmo- spheric pressure. Determine the electrical current at which the wire would be in danger of burnout in nucleate boiling.

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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file:///C:/Users/MEGA/Downloads/Cengel.%20Heat%20and%20mass%20Transfer%20Fundam
i
10-31 Water is boiled at 90°C by a horizontal brass heating
element of diameter 8 mm. Determine the maximum heat flux
that can be attained in the nucleate boiling regime.
10-32 A 1-mm-diameter nickel wire with electrical resis-
tance of 0.129 92/m is submerged horizontally in water at atmo-
spheric pressure. Determine the electrical current at which the
wire would be in danger of burnout in nucleate boiling.
P = 1 atm
Nickel wire
0.129 02/m
FIGURE P10-32
10-33 In a boiler, water is boiled at 100°C by hot gases
flowing through a 10-m-long tube with an outer diameter of
5 cm that is submerged in the water. Determine the maximum
rate of water vaporization that can be produced by the tube in
the nucleate boiling regime.
10-34 Hot gases flow inside an array of tubes that are embed-
1
2
th
b
fa
10
pra
en
to
dif
cus
10-
vap
plie
ture
Rob
coe
tion
10-
hot
mec
wate
deter
wate
Transcribed Image Text:O file:///C:/Users/MEGA/Downloads/Cengel.%20Heat%20and%20mass%20Transfer%20Fundam i 10-31 Water is boiled at 90°C by a horizontal brass heating element of diameter 8 mm. Determine the maximum heat flux that can be attained in the nucleate boiling regime. 10-32 A 1-mm-diameter nickel wire with electrical resis- tance of 0.129 92/m is submerged horizontally in water at atmo- spheric pressure. Determine the electrical current at which the wire would be in danger of burnout in nucleate boiling. P = 1 atm Nickel wire 0.129 02/m FIGURE P10-32 10-33 In a boiler, water is boiled at 100°C by hot gases flowing through a 10-m-long tube with an outer diameter of 5 cm that is submerged in the water. Determine the maximum rate of water vaporization that can be produced by the tube in the nucleate boiling regime. 10-34 Hot gases flow inside an array of tubes that are embed- 1 2 th b fa 10 pra en to dif cus 10- vap plie ture Rob coe tion 10- hot mec wate deter wate
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