Final_Sp96

Final_Sp96 - ME326:THERMODYNAMICS I FinalExam,May11,1996...

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ME 326: THERMODYNAMICS I Final Exam, May 11, 1996 Open Book  1) (20%)  A steam power plant (Rankine cycle) operates as shown  below.  The overall cycle efficiency is measured as  η R =23%.  The pump is  isentropic. (a) Fill in the state table except where XXX appears. (b) What is the turbine efficiency  η t ? State T( ° C) P(kPa) h(kJ/kg) s(kJ/kg•K) x 1 XXX 8 (              ) XXX 0.0 2 XXX 1500 (              ) XXX XXX 3 650 1500 (              ) (              ) XXX 4s XXX 8 (              ) (              ) (              ) 4a XXX 8 (              ) XXX XXX 1 2 3 4 pump condenser turbine boiler and superhtr

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2) (20%)  An isobaric mixing chamber is to provide a mixture of argon  and oxygen for an underwater breathing system. The final mixture must  have 20% oxygen, 80% argon by volume , and have an outlet temperature
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