Q18: Heat is generated uniformly at a rate of 2.6 x10 w/m³ in a spherical ball (k = 45 W/m - "C) of diameter 30 cm. The ball is exposed to iced-water at 0°C with a heat transfer coefficient of 1200 W/m2 .C. Determine the temperatures at the center and the surface of the ball.

Q18: Heat is generated uniformly at a rate of 2.6 x10 w/m³ in a spherical ball (k = 45 W/m - "C) of diameter 30 cm. The ball is exposed to iced-water at 0°C with a heat transfer coefficient of 1200 W/m2 .C. Determine the temperatures at the center and the surface of the ball.

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.

Chapter1: Basic Modes Of Heat Transfer

Section: Chapter Questions

Problem 1.9P: Heat is transferred at a rate of 0.1 kW through glass wool insulation (density=100kg/m3) with a 5-cm...

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Concept explainers

Conduction and Convection

When energy travels from one object to another it is said to have undergone heat transfer. Heat transfer is nothing but the transfer of thermal energy or internal energy from one thing to another, like e.g., when a vessel with water, kept on top of a burner, heats up because of the flame underneath it.

Question

Q18: Heat is generated uniformly at a rate of 2.6 x10° W/m in a spherical ball (k = 45 W/m - "C) of diameter 30
cm. The ball is exposed to iced-water at 0°C with a heat transfer coefficient of 1200 W/m² - C. Determine
the temperatures at the center and the surface of the ball.

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