What electrical current is required to maintain a 0.076 mm diameter, 0.6 m long vertical wire at 400K in an atmosphere of quiescent air at 300K?The wire's resistance is 0.0118ohms per meter. Properties at 350 K Pr = 0.697 B = 1/T = 1/350 = 0.002 86 K- 20.76 x 10-* m/s k = 0.030 03 W/m K

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)
8th Edition
ISBN:9781305387102
Author:Kreith, Frank; Manglik, Raj M.
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Chapter1: Basic Modes Of Heat Transfer
Section: Chapter Questions
Problem 1.8P: 1.80 Describe and compare the modes of heat loss through the single-pane and double-pane window...
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What electrical current is required to maintain a 0.076 mm diameter, 0.6 m
long vertical wire at 400K in an atmosphere of quiescent air at 300K?The
wire's resistance is 0.0118ohms per meter.
Properties at 350 K
v = 20.76 x 10-* m²/s
Pr = 0.697
k = 0.030 03 Wim K
B = 1/T = 1/350 = 0.002 86 K-
Transcribed Image Text:What electrical current is required to maintain a 0.076 mm diameter, 0.6 m long vertical wire at 400K in an atmosphere of quiescent air at 300K?The wire's resistance is 0.0118ohms per meter. Properties at 350 K v = 20.76 x 10-* m²/s Pr = 0.697 k = 0.030 03 Wim K B = 1/T = 1/350 = 0.002 86 K-
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