1 kg of AIR at P = 100 kPa is contained in a RIGID TANK made of IRON of mass 0.5 kg. Initially, the temperature of both the AIR and the TANK are 25°C. [a) Now, the TANK (air and the iron) is heated by an electric heater of power 100 W for 30 min. Calculate the entropy generation Sgen during the heating process. (Heat loss to the surrounding is prevented during this process.) b) Next, the tank is left to cool down in a VERY BIG room at T = 25°C. Calculate the total entropy generated Sgen [kJ/K] (both in the system and in the surrounding) during the cooling of the tank.

1 kg of AIR at P = 100 kPa is contained in a RIGID TANK made of IRON of mass 0.5 kg. Initially, the temperature of both the AIR and the TANK are 25°C. [a) Now, the TANK (air and the iron) is heated by an electric heater of power 100 W for 30 min. Calculate the entropy generation Sgen during the heating process. (Heat loss to the surrounding is prevented during this process.) b) Next, the tank is left to cool down in a VERY BIG room at T = 25°C. Calculate the total entropy generated Sgen [kJ/K] (both in the system and in the surrounding) during the cooling of the tank.

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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