A long cylinder of 30-mm diameter, initially at a uniform temperature of 1100 K, is suddenly quenched in a large, constant- temperature oil bath at 350 K. The cylinder properties are k = 1.7 W/m-K, c = 1600 J/kg-K, and p = 400 kg/m³, while the convection coefficient is 54 W/m².K. Physical Properties Mathematical Functions Step 1 When deciding if the lumped capacitance method can be used, what is the value of the Biot number? Bic Save for Later Using multiple attempts will impact your score. 100% score reduction after attempt 6 Step 2 When using the one-term approximation for transient 1-D conduction, what is the value of the applicable Biot number? Use Table 5.1. Bi = Attempts: 0 of 7 used Submit Answer i
A long cylinder of 30-mm diameter, initially at a uniform temperature of 1100 K, is suddenly quenched in a large, constant- temperature oil bath at 350 K. The cylinder properties are k = 1.7 W/m-K, c = 1600 J/kg-K, and p = 400 kg/m³, while the convection coefficient is 54 W/m².K. Physical Properties Mathematical Functions Step 1 When deciding if the lumped capacitance method can be used, what is the value of the Biot number? Bic Save for Later Using multiple attempts will impact your score. 100% score reduction after attempt 6 Step 2 When using the one-term approximation for transient 1-D conduction, what is the value of the applicable Biot number? Use Table 5.1. Bi = Attempts: 0 of 7 used Submit Answer i
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.
Chapter1: Basic Modes Of Heat Transfer
Section: Chapter Questions
Problem 1.68P
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Assume the Fourier number, Fo, is greater than or equal to 0.2 (note that you still need to calculate the Biot number, and possibly a second Biot number).
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