Springs in suspension system of automobiles aremade of steel rods heated and wound into coils while ductile.Consider steel rods (r = 7832 kg/m3, cp = 434 J/kg·K, andk = 63.9 W/m·K) with diameter of 2.5 cm and length of1.27 m. The steel rods are heated in an oven with a uniformconvection heat transfer coefficient of 20 W/m2·K. The steelrods were heated from an initial temperature of 20°C to thedesired temperature of 450°C before being wound into coils.Determine the ambient temperature in the oven, if the steelrods were to be heated to the desired temperature within10 min.

Springs in suspension system of automobiles aremade of steel rods heated and wound into coils while ductile.Consider steel rods (r = 7832 kg/m3, cp = 434 J/kg·K, andk = 63.9 W/m·K) with diameter of 2.5 cm and length of1.27 m. The steel rods are heated in an oven with a uniformconvection heat transfer coefficient of 20 W/m2·K. The steelrods were heated from an initial temperature of 20°C to thedesired temperature of 450°C before being wound into coils.Determine the ambient temperature in the oven, if the steelrods were to be heated to the desired temperature within10 min.

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 2.38P: 2.38 The addition of aluminum fins has been suggested to increase the rate of heat dissipation from...

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