71. A long stainless steel rod (ρ = 7900 kg/m3, c = 0.526 kJ/kg·K, and k = 17.4 W/m·K) having a diameter of 5 cm, is initially at 200 C when its surface is exposed to an ambient at 300 K with a heat transfer coefficient of 600 W/m2·K. After 2 min exposure, find: a) the centerline temperature and b) the temperature at a distance of 1 cm from the rod centerline. c) Find the temperature of 10 equallyspaced points inside the rod after 2 min of exposure and plot the results. d) Track the centerline temperature every 5 seconds and plot the results for the 2 minutes of exposure. [Ans.: a) 93 C and b) 90 C].

71. A long stainless steel rod (ρ = 7900 kg/m3, c = 0.526 kJ/kg·K, and k = 17.4 W/m·K) having a diameter of 5 cm, is initially at 200 C when its surface is exposed to an ambient at 300 K with a heat transfer coefficient of 600 W/m2·K. After 2 min exposure, find: a) the centerline temperature and b) the temperature at a distance of 1 cm from the rod centerline. c) Find the temperature of 10 equallyspaced points inside the rod after 2 min of exposure and plot the results. d) Track the centerline temperature every 5 seconds and plot the results for the 2 minutes of exposure. [Ans.: a) 93 C and b) 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.

Chapter1: Basic Modes Of Heat Transfer

Section: Chapter Questions

Problem 1.7P: A cooling system is to be designed for a food storage warehouse for keeping perishable foods cool...

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