6.54 In a heat-treating process, a 1-kg metal part, initially at T075 K, is quenched in a tank containing 100 kg of water, initially at 295 K. There is negligible heat transfer between the contents of the tank and their surroundings. Taking the specific heat of the metal part and water as constant at 0.5 kJ/kg · K and 4.2 kJ/kg · K, respectively, determine (a) the final equilibrium temperature after quenching, in K, and (b) the amount of entropy produced within the tank, in kJ/K.

6.54 In a heat-treating process, a 1-kg metal part, initially at T075 K, is quenched in a tank containing 100 kg of water, initially at 295 K. There is negligible heat transfer between the contents of the tank and their surroundings. Taking the specific heat of the metal part and water as constant at 0.5 kJ/kg · K and 4.2 kJ/kg · K, respectively, determine (a) the final equilibrium temperature after quenching, in K, and (b) the amount of entropy produced within the tank, in kJ/K.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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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

6.54 In a heat-treating process, a 1-kg metal part, initially at
T075 K, is quenched in a tank containing 100 kg of water,
initially at 295 K. There is negligible heat transfer between
the contents of the tank and their surroundings. Taking the
specific heat of the metal part and water as constant at
0.5 kJ/kg · K and 4.2 kJ/kg · K, respectively, determine (a)
the final equilibrium temperature after quenching, in K, and
(b) the amount of entropy produced within the tank, in kJ/K.

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