Question

We have a Carnot engine operating between a hot reservoir A and a cold reservoir B....

We have a Carnot engine operating between a hot reservoir A and a cold reservoir B. The work produced in the engine is used to power a flywheel.

The hot reservoir is boiling water at p0 = 1 bar and Ta = 373K. The cold reservoir is a block of ice at p0 and Tb = 273K (latent heat = 3.3E5 J/kg). For the flywheel we know that Inertiamoment = 2kg m^2, mass = 6kg, c = 418J/kg K. Final speed of the flywheel is given by w.

After a few Carnot cycles, 1kg has melted. For this process, determine:

- change in entropy of both reservoirs A and B.

- change of entropy of the gas in the Carnot engine.

- determine the speed of the flywheel w.

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