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A proposed Ocean Thermal Energy Conversion (OTEC) plant draws heat from the ocean surface at 22°C...

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Mechanical Engineering

A proposed Ocean Thermal Energy Conversion (OTEC) plant drawsheat from the ocean surface at 22°C and rejects heat to the waternear the ocean bed at 4°C. What is the highest thermal efficiencythe plant could achieve? [4] (b) Consider a system undergoing anadiabatic process from a fixed state 1 to a fixed state 2. Use theSecond Law of Thermodynamics to prove that the maximum work is doneby the system if the process is reversible. [6] (c) Steam at 20 MPaand 460°C flows at 12 kg/s into an adiabatic turbine and exits at20 kPa. What is the maximum possible power output of the turbine?What is the temperature of the steam at the exit in that case? [5](d) Steam at 20 MPa and 460°C flows at 12 kg/s into an adiabaticturbine and exits at 20 kPa and 85% quality. What is the isentropicefficiency of the turbine?

Answer & Explanation Solved by verified expert
4.3 Ratings (628 Votes)
i The maximum efficiency of otec cycle is same as carnotefficiencyii During    See Answer
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