Stainless steel type 304 (k=16.3 W/m-K) just came from heat treatment when it was brought to a room at 27 °C. It is in cube form and has an edge of side 20 cm. Initially, the temperature of the steel from the heat treatment is 500 °C. The total effective heat transfer coefficient was estimated to be 18 W/m2-K. How long will it take for the surface of the cube to be within 28 C of the room temp.?

Stainless steel type 304 (k=16.3 W/m-K) just came from heat treatment when it was brought to a room at 27 °C. It is in cube form and has an edge of side 20 cm. Initially, the temperature of the steel from the heat treatment is 500 °C. The total effective heat transfer coefficient was estimated to be 18 W/m2-K. How long will it take for the surface of the cube to be within 28 C of the room temp.?

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 8.35P

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