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Q3. A 3em diameter tube has circumferential fins of rectangular profike. The fins are constructal of aluminum and are 2mm thick and 20 mm long. The tube wall temperature is maintained at 250 C, and the environment temperature is 50 C. The heat-transfer coefficient is 180 W/m'C. Determine the number of fins per meter of length of the tube that increase the heat koss from the tube by 400% of that without fins, (fin effectiveness-4).

Q3. A 3em diameter tube has circumferential fins of rectangular profike. The fins are constructal of aluminum and are 2mm thick and 20 mm long. The tube wall temperature is maintained at 250 C, and the environment temperature is 50 C. The heat-transfer coefficient is 180 W/m'C. Determine the number of fins per meter of length of the tube that increase the heat koss from the tube by 400% of that without fins, (fin effectiveness-4).

Introduction to Chemical Engineering Thermodynamics
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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Q3. A 3em diameter tube has circumferential fins of rectangukar profile. The fins are constructal of aluminum and are 2mm thick and 20 mm long. The tube wall temperature is maintained at 250-C, and the environment temperature is 50 C. The heat-transfer coefficient is 180 W/m C. Determine the number of fins per meter of length of the tube that increase the heat loss from the tube by 400% of that without fins, (fin effectiveness-4).
Transcribed Image Text:Q3. A 3em diameter tube has circumferential fins of rectangukar profile. The fins are constructal of aluminum and are 2mm thick and 20 mm long. The tube wall temperature is maintained at 250-C, and the environment temperature is 50 C. The heat-transfer coefficient is 180 W/m C. Determine the number of fins per meter of length of the tube that increase the heat loss from the tube by 400% of that without fins, (fin effectiveness-4).
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