A hot dog can be considered to be a 12 cm long cylinder, whose diameter is 2 cm and whose properties are p = 980 kg/m3, cp = 3.9 kJ/kg · K, k =1.25 W/m · K, and a = 2 × 10–7 m2 /s. Consider a hot dog initially at 5 C which is dropped into boiling water at 100 C. The heat transfer coefficient at the surface of the hot dog is estimated to be 500 W/m2 · K and the hot dog can be considered to be cooked when its center temperature reaches 90 C.

A hot dog can be considered to be a 12 cm long cylinder, whose diameter is 2 cm and whose properties are p = 980 kg/m3, cp = 3.9 kJ/kg · K, k =1.25 W/m · K, and a = 2 × 10–7 m2 /s. Consider a hot dog initially at 5 C which is dropped into boiling water at 100 C. The heat transfer coefficient at the surface of the hot dog is estimated to be 500 W/m2 · K and the hot dog can be considered to be cooked when its center temperature reaches 90 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.

Chapter7: Forced Convection Inside Tubes And Ducts

Section: Chapter Questions

Problem 7.16P

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