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A closed, rigid tank fitted with a paddle wheel contains 2.2 kg of air, initially at...

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Mechanical Engineering

A closed, rigid tank fitted with a paddle wheel contains 2.2 kgof air, initially at 200oC, 1 bar. During an interval of 20minutes, the paddle wheel transfers energy to the air at a rate of1 kW. During this time interval, the air also receives energy byheat transfer at a rate of 0.5 kW. These are the only energytransfers. Assume the ideal gas model for the air, and no overallchanges in kinetic or potential energy. Do not assume specificheats are constant. Determine the change in specific internalenergy for the air, in kJ/kg, and the final temperature of the air,in oC. The answer to the change in internal energy is 818.2 kJ/kg.find the final temperature of the air, in oC.

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