SpecialProblems25-26 - State Pressure Temperature Specific...

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
Special Problems for ME 200 – Fall 2009 Special Problems 25 and 26 Due Friday, October 30, 2009 SP25: Two kilograms of water execute Carnot power cycle inside a piston-cylinder device. During isothermal expansion, water is heated from an initial state where its pressure is 40 bar and the quality is 15% (state 1) until its state is saturated vapor (state 2). The saturated vapor then expands adiabatically to a pressure of 1.5 bar (state 3) while 491.5 kJ/kg of work output is produced. Water is then isothermally compressed at 1.5 bar to state 4 and then via adiabatic compression back to state 1. (a) Complete the following table.
Background image of page 1
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: State Pressure Temperature Specific Volume Specific Internal Specific Enthalpy (bar) (°C) (m3/kg) Energy (kJ/kg) (kJ/kg) 1 2 3 4 (b) Determine the heat transfer (kJ) and work (kJ) for each process. (c) What is the thermal efficiency of this cycle? (d) Show all the processes of the cycle on P-v diagram. SP26: A heat engine receives 2975 kJ/kg of heat at an average temperature of 450 C and rejects 1850 kJ/kg of heat at 47 C. (a) Is the Clausius inequality satisfied? Provide quantitative support for your answer. (b) Are the Carnot principles satisfied? Provide quantitative support for your answer....
View Full Document

{[ snackBarMessage ]}

Ask a homework question - tutors are online