A simple steam power plant is said to have the following four states: 1: (20C, 100 kPa),

Question:

A simple steam power plant is said to have the following four states: 1: (20◦C, 100 kPa), 2: (25◦C, 1 MPa), 3: (1000◦C, 1 MPa), 4: (250◦C, 100 kPa), with an energy source at 1100◦C, and it rejects energy to a 0◦C ambient. Is this cycle possible? Are any of the devices impossible?

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