A 0.1 m diameter long rod at 20 °C is to be heated by a hot fluid of 200 °C. How long does it take the rod temperature to reach 70% of the fluid temperature if the followings are given? Convection coefficient h = 10 W/m²K Thermal conductivity k = 20 W/mK Thermal diffusivity a = 10-5 m²/s Lütfen birini seçin: A. 10985 s B. 745 s C. 43.94 s D. 2746.25 s

A 0.1 m diameter long rod at 20 °C is to be heated by a hot fluid of 200 °C. How long does it take the rod temperature to reach 70% of the fluid temperature if the followings are given? Convection coefficient h = 10 W/m²K Thermal conductivity k = 20 W/mK Thermal diffusivity a = 10-5 m²/s Lütfen birini seçin: A. 10985 s B. 745 s C. 43.94 s D. 2746.25 s

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.

Chapter2: Steady Heat Conduction

Section: Chapter Questions

Problem 2.63P

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