I need the answer as soon as possible 200 CA new process for treatment of a special material is to be evaluated. The material, a sphereof radius r.-5 mm, is initially in equilibrium at Tr-335 °C in a furnace. It is suddenly removedfrom the furnace and subjected to a cooling in a well-stirred water bath at T-20 °C for a periodof time. For this situation, the convective heat transfer coefficient is hw = 6000 W/m? .K. Thethermophysical properties of the sphere material are p 3000 kg/m, k= 30 W/m.K, c-1000J/kg.K, and a= 6.66x 10m? /s.a) How long must the sphere remain in the water bath for 65% of the maximum thermal energyto be removed?b) Calculate the time t required for the cooling process to be completed when the centertemperature reaches a value of T=50 °C.c) Calculate the surface temperature of the sphere when the cooling process completed%3DT= 20°Ch= 6000 W/mKWaterSphere, r, 5 mmp= 3000 kg/mC=1 kJ/kg-Ka= 6.66 x 10 m/sk= 30 W/m-K-T-335°CT (0, )=50°C

We will utilize the idea of lumped heat limit (conduction-convection frameworks). The lumped…

Answered: erties of the sphere material are E Ex…

Engineering

Mechanical Engineering

erties of the sphere material are E Ex 10 m2 /s. o sphere remain in the water bath

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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