A cylinder 2 ft high with a diameter of 3 in. is initially at the uniform temperature
Question:
A cylinder 2 ft high with a diameter of 3 in. is initially at the uniform temperature of 70°F. How long after the cylinder is placed in a medium at 1000°F, with associated convective heat transfer coefficient of 4 Btu/h ft2 °F, will the center temperature reach 500°F if the cylinder is made from
a. Copper, k = 212 btu/h ft °F?
b. Aluminum, k = 130 btu/h ft °F?
c. Zinc, k = 60 btu/h ft °F?
d. Mild steel, k = 25 btu/h ft °F?
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Related Book For 
Fundamentals Of Momentum Heat And Mass Transfer
ISBN: 9781118947463
6th Edition
Authors: James Welty, Gregory L. Rorrer, David G. Foster
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