Temperature distribution along the radius of a 40-cm diameter sphere was found to be T(r)=86280-² all quantities in SI units. Since the temperature is only dependent on radius (r), the heat transfer in this case is radially one- dimensional. Find out the temperature and heat transfer rate at following locations. The thermal con- ductivity of sphere is 18 W/m.°C. (a) At the surface (a) 74.8 K; 1013.35 W (b) Where r = 0.1 m (b) 83.2 K; 126.67 W

Temperature distribution along the radius of a 40-cm diameter sphere was found to be T(r)=86280-² all quantities in SI units. Since the temperature is only dependent on radius (r), the heat transfer in this case is radially one- dimensional. Find out the temperature and heat transfer rate at following locations. The thermal con- ductivity of sphere is 18 W/m.°C. (a) At the surface (a) 74.8 K; 1013.35 W (b) Where r = 0.1 m (b) 83.2 K; 126.67 W

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 3.13P

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