The fin array shown below is 8 rectangular fins on a 10-mm thick, 34-mm x 66-mm base plate. Each fin is 24 mm long with a 30-mm x 2-mm rectangular cross-section. The fin array is made of an aluminum alloy having k=170 W/m K. The array is installed in an insulated wall. The surface of the array with the fins is exposed to air with h = 40 W/m².K. a) Find the fin efficiency (answer: n = 0.95103). b) Find the thermal resistance for convective heat transfer from the surface of the fin array to the air (answer: 1.798 K/W). 10 mm. -24 mm hair = 40 W/m²K 30 mm mm 66 mm. 34 mm

The fin array shown below is 8 rectangular fins on a 10-mm thick, 34-mm x 66-mm base plate. Each fin is 24 mm long with a 30-mm x 2-mm rectangular cross-section. The fin array is made of an aluminum alloy having k=170 W/m K. The array is installed in an insulated wall. The surface of the array with the fins is exposed to air with h = 40 W/m².K. a) Find the fin efficiency (answer: n = 0.95103). b) Find the thermal resistance for convective heat transfer from the surface of the fin array to the air (answer: 1.798 K/W). 10 mm. -24 mm hair = 40 W/m²K 30 mm mm 66 mm. 34 mm

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.

Chapter8: Natural Convection

Section: Chapter Questions

Problem 8.8P

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