Engineering, 07.03.2020 04:40 ur4286

Four-tenth lb of air, initially at 540°R, is contained in a closed, rigid tank fitted with a paddle wheel that stirs the air until its temperature is 740°R. The driveshaft of the paddle wheel rotates for 60 s at 100 RPM with an applied torque of 20 ft ⋅ lbf. Assuming ideal gas behavior for the air, determine the work and heat transfer, each in Btu. There are no overall changes in kinetic or potential energy

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Four-tenth lb of air, initially at 540°R, is contained in a closed, rigid tank fitted with a paddle...