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Thermo Test 2

QuestionAnswer
Transient A process or system whose properties change with time
Steady state A process or system whose properties stay constant over time
Shaft work Work transferred across a system boundary by a rotating mechanical shaft
Shaft work examples Turbine, pump, compressor, fan
Air Usually modeled as an ideal gas. Assume constant specific heat or variable specific heat.
Water Used in power cycles (Rankine) and many other systems. Keep track of phase and use steam tables when not an ideal gas.
Phase changes occur in what components of a Rankine Power Cycle Boiler, condenser, and may just begin in the turbine
Primary components of Rankine Power Cycle Condenser, boiler, turbine, pump
Diffusers act to Decelerate a flow and raise its static pressure
Stochastic variation Random, unpredictable fluctuations in a system's properties over time
Ideal throttling process No change in enthalpy across the device
How to calculate Rankine Power Cycle efficiency 1-Qout/Qin
Created by: ephemeral
 

 



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