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Consider air within a closed container fitted with a paddle wheel that transfer energy to the system at a rate of 1 kW for 20 minutes. During the same time interval, the enclosed air receives at a rate of 0.5 kW heat transfer from the surrounding. For a mass of air of 2.2 kg initially at T₁ = 200 °C, P₁ = 1 bar and assuming ideal gas model with cv = 0.764 kJ/kg determine: a) The change in specific internal energy in kJ/kg b) Final temperature of the air in °C

Consider air within a closed container fitted with a paddle wheel that transfer energy to the system at a rate of 1 kW for 20 minutes. During the same time interval, the enclosed air receives at a rate of 0.5 kW heat transfer from the surrounding. For a mass of air of 2.2 kg initially at T₁ = 200 °C, P₁ = 1 bar and assuming ideal gas model with cv = 0.764 kJ/kg determine: a) The change in specific internal energy in kJ/kg b) Final temperature of the air in °C

Elements Of Electromagnetics
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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Consider air within a closed container fitted with a paddle wheel that transfer energy to the system at a rate of 1 kW for 20 minutes. During the same time interval, the enclosed air receives at a rate of 0.5 kW heat transfer from the surrounding. For a mass of air of 2.2 kg initially at T₁ = 200 °C, P₁ = 1 bar and assuming ideal gas model with cv = 0.764 kJ/kg determine: a) The change in specific internal energy in kJ/kg b) Final temperature of the air in °C
Transcribed Image Text:Consider air within a closed container fitted with a paddle wheel that transfer energy to the system at a rate of 1 kW for 20 minutes. During the same time interval, the enclosed air receives at a rate of 0.5 kW heat transfer from the surrounding. For a mass of air of 2.2 kg initially at T₁ = 200 °C, P₁ = 1 bar and assuming ideal gas model with cv = 0.764 kJ/kg determine: a) The change in specific internal energy in kJ/kg b) Final temperature of the air in °C
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