Fins are usually used in to increase the surface area of the heat exchanger so that it increases the heat transfer area, hence improves the heat exchanger performance. A triangular fin (that is, a fin with an equilateral triangle cross section) with side length of b, and length of L, extends from a solid wall into a fluid as shown below. If the side length b = 2 mm has a tolerance of 0.05 mm. Length of the fin, L = 1.5 cm and assumed to be constant. The surface area that is considered as heat transfer area are the body and the tip of the fin. wall -Body L Tip а. 'Determine the total heat transfer surface area b. Use differentials to estimate the error in heat transfer surface area considering b = 2 mm with tolerance of 0.05 mm How does the error determined in (b) compare with the actual surface area? Give your answer as % relative error. c.

Fins are usually used in to increase the surface area of the heat exchanger so that it increases the heat transfer area, hence improves the heat exchanger performance. A triangular fin (that is, a fin with an equilateral triangle cross section) with side length of b, and length of L, extends from a solid wall into a fluid as shown below. If the side length b = 2 mm has a tolerance of 0.05 mm. Length of the fin, L = 1.5 cm and assumed to be constant. The surface area that is considered as heat transfer area are the body and the tip of the fin. wall -Body L Tip а. 'Determine the total heat transfer surface area b. Use differentials to estimate the error in heat transfer surface area considering b = 2 mm with tolerance of 0.05 mm How does the error determined in (b) compare with the actual surface area? Give your answer as % relative error. c.

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.

Chapter10: Heat Exchangers

Section: Chapter Questions

Problem 10.46P

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