REMINDER! Use 5 significant figures when using entropy-related quantities as per the course policy
SP 36: After the compressor and before the condenser, the state is at 1 MPa and 50degC
SP 38: the cutoff ratio is the volume after the constant pressure expansion divided by the volume at top dead center(TDC).
Tutorial Room closed Tuesday(11/22/16)
If instructors have not given you this correction yet, they will accept the adiabatic condition for all three cases otherwise --> SP 32: Part i) isentropic and adiabatic, Part ii) isothermal and NOT adiabatic, Part iii)polytropic with 1 < n < 1.4 and NOT adiabatic. HINT: remember that work for an system with mass flowing in and out is W= integral VdP NOT PdV as with closed systems. HINT 2: In the polytropic case when PV=constant for an ideal gas(or n=1) this is the isothermal case. In the polytropic case when n=ratio of specific heats(k=1.4 for air) than this is the isentropic case.
SP 33: boiler and condenser are NOT adiabatic(as would defeat the entire purpose of a boiler or condenser). The turbine and pump are adiabatic. HINT: boiler and condenser are isobaric
SP 33:e) comment on whether the magnitude of entropy generation for the pump and turbine are consistent with which one gives the best improvement in terms of efficiency when replaced with an ideal pump or turbine
SP 34: This superheat rRankine cycle power plant consists of a pump, boiler/superheater, turbine, and CONDENSER(Not compressor!). HINT: pressure is constant across the boiler and condenser.
SP 34: n = isentropic efficiency
SP 34: use 400 deg C for the boundary temp of the boiler
SP 35: When replacing the single turbine with the pair of turbines and reheater the configuration is TURBINE-REHEATER-TURBINE where the pressure across the reheater remains constant.
SP 32-35 due Monday 3:30pm (11/21/16)
Tutorial hours are from 7:30am - 5:30pm every weekday in Tutorial Room
Exam 3 preparation
Exam 3 Guided Study Problems
Exam 3 Guided Study Problem SOLUTIONS
Exam 2 preparation
Exam 2 Guided Study Problems
Exam 2 Guided Study Problem SOLUTIONS
Exam 1 preparation
Exam 1 Guided Study Problems
Exam 1 Guided Study Problem SOLUTIONS
Exam 1 Guided Study Problem SOLUTIONS #1 w propane
Supplemental Instruction Schedule