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17.36 Heat is to be transferred from water to air through an aluminum wall. It is proposed to add rectangular fins 0.05-in thick and 3/4-in long spaced 0.08 in apart to the aluminum surface to aid in transferring heat. The heat-transfer coeffi- cients on the air and water sides are 3 and 25 Btu/h ft² F, respectively. Evaluate the percent increase in heat transfer if these fins are added to (a) the air side, (b) the water side, and (c) both sides. What conclusions may be reached regarding this result?

17.36 Heat is to be transferred from water to air through an aluminum wall. It is proposed to add rectangular fins 0.05-in thick and 3/4-in long spaced 0.08 in apart to the aluminum surface to aid in transferring heat. The heat-transfer coeffi- cients on the air and water sides are 3 and 25 Btu/h ft² F, respectively. Evaluate the percent increase in heat transfer if these fins are added to (a) the air side, (b) the water side, and (c) both sides. What conclusions may be reached regarding this result?

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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17.36 Heat is to be transferred from water to air through an aluminum wall. It is proposed to add rectangular fins 0.05-in thick and 3/4-in long spaced 0.08 in apart to the aluminum surface to aid in transferring heat. The heat-transfer coeffi- cients on the air and water sides are 3 and 25 Btu/h ft² F, respectively. Evaluate the percent increase in heat transfer if these fins are added to (a) the air side, (b) the water side, and (c) both sides. What conclusions may be reached regarding this result?
Transcribed Image Text:17.36 Heat is to be transferred from water to air through an aluminum wall. It is proposed to add rectangular fins 0.05-in thick and 3/4-in long spaced 0.08 in apart to the aluminum surface to aid in transferring heat. The heat-transfer coeffi- cients on the air and water sides are 3 and 25 Btu/h ft² F, respectively. Evaluate the percent increase in heat transfer if these fins are added to (a) the air side, (b) the water side, and (c) both sides. What conclusions may be reached regarding this result?
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