Repeat Problem 17.45 for the case of an aluminum pipeand-fin arrangement. Data From Problem 17.45 A 2-in.-OD
Question:
Data From Problem 17.45
A 2-in.-OD stainless steel tube has 16 longitudinal fins spaced around its outside surface as shown. The fins are 1/16-in. thick and extend 1 in. from the outside surface of the tube.
a. If the outside surface of the tube wall is at 250°F, the surrounding air is at 80°F, and the convective heat-transfer coefficient is 8 Btu/h ft2 °F, determine the percent increase in heat transfer for the finned pipe over that for the unfinned pipe.
b. Determine the same information as in part (a) for values of h of 2, 5, 15, 50, and 100 Btu/h ft2 °F. Plot the percent increase in q vs. h. What conclusions can be reached concerning this plot?
Step by Step Answer:
Fundamentals Of Momentum Heat And Mass Transfer
ISBN: 9781118947463
6th Edition
Authors: James Welty, Gregory L. Rorrer, David G. Foster