Use the VG-1 Performance Evaluation Criteria (PEC) (assume all thermal resistance on one side) to compare the performance of the offset strip-fin (OSF) and the plain surface geometry (use subscript “s”). Assume that the plain fin geometry operates at Res = 834, at which js = 0.00669 and fs = 0.0235. Assume that curve fits of f and j vs. Re exist for the OSF geometry; let these be f = F(Re) and j = J(Re). Derive the equation to calculate the Re at which the OSF geometry would operate for the VG-1 case. Your final expression should include all of the above numerical values and expressions for f and j. Describe how you would solve for Re. Assume that both surfaces have the same hydraulic diameter.

Use the VG-1 Performance Evaluation Criteria (PEC) (assume all thermal resistance on one side) to compare the performance of the offset strip-fin (OSF) and the plain surface geometry (use subscript “s”). Assume that the plain fin geometry operates at Res = 834, at which js = 0.00669 and fs = 0.0235. Assume that curve fits of f and j vs. Re exist for the OSF geometry; let these be f = F(Re) and j = J(Re). Derive the equation to calculate the Re at which the OSF geometry would operate for the VG-1 case. Your final expression should include all of the above numerical values and expressions for f and j. Describe how you would solve for Re. Assume that both surfaces have the same hydraulic diameter.

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.

Chapter1: Basic Modes Of Heat Transfer

Section: Chapter Questions

Problem 1.38P

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