Steel balls 12 mm in diameter are annealed by heating to 1200 K and then slowly cooling to 350 K in an air environment for which To = 325 K and h = 20 W/m².K. Assuming the properties of the steel to be k = 40 W/m-K, p 7800 kg/m³, and c = 600 J/kg-K = estimate the time required for the cooling process. The time required for the cooling process is i h.

Steel balls 12 mm in diameter are annealed by heating to 1200 K and then slowly cooling to 350 K in an air environment for which To = 325 K and h = 20 W/m².K. Assuming the properties of the steel to be k = 40 W/m-K, p 7800 kg/m³, and c = 600 J/kg-K = estimate the time required for the cooling process. The time required for the cooling process is i h.

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.

Chapter3: Transient Heat Conduction

Section: Chapter Questions

Problem 3.36P

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