mid2sol - cycle, (2) the turbine will have to handle steam...

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ME 212 MIDTERM 2 SOLUTION 1) a. The air standard assumptions are: (1) the working fluid is air which behaves as an ideal gas, (2) all the processes are internally reversible, (3) the combustion process is replaced by the heat addition process, and (4) the exhaust process is replaced by the heat rejection process which returns the working fluid to its original state. b. The Carnot cycle is not a realistic model for steam power plants because (1) limiting the heat transfer processes to two-phase systems to maintain isothermal conditions severely limits the maximum temperature that can be used in the
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Unformatted text preview: cycle, (2) the turbine will have to handle steam with a high moisture c. We would favor the two-stage compression refrigeration system with a flash chamber since it is simpler, cheaper, and has better heat transfer characteristics. d. No, a process that separates a mixture into its components without requiring any work (exergy) input is impossible since such a process would violate the 2 nd law of thermodynamics. e. For the case of stoichiometric amount of pure oxygen since we have the same amount of chemical energy released but a smaller amount of mass to absorb it....
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mid2sol - cycle, (2) the turbine will have to handle steam...

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