Cheatography
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MAE 201, Chapters 1 - 5.3
This is a draft cheat sheet. It is a work in progress and is not finished yet.
Simple terms
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Thermodynamic System (TS) any object or system of objects
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Types of TS Isolated (no interaction with surroundings), Closed ( no mass exchange), open (mass exchange)
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State Postulate Defines a number of properties required to fix a state
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Intensive properties (mass ind.) if the property is the same
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Extensive properties (mass dep.) if the property is doubled
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Energys
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macroscopic energys (Work) kinetic, potential
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microscopic energys (Heat transfer) thermal, chemical, nuclear, etc
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1LT
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Closed U=Qnet-Wnet
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Open U=Qnet-Wnet+ m(ein-eout)
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adiabatic no heat transfer
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isothermal T is constant
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isobaric P is constant
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isochoric V is constant
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Equations
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Specific _______ x=X/m
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kinetic energy ke=v2/2
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potential energy pe=gh
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specific total energy e=ke+pe+u
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total energy E=mv2/2 +mgh+u
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electric power W=Voltage*current
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steady electric power W=Voltagecurrenttime
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boundary work W=P*V
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shaft work W= T2pi*number of turns
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Devices
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Thermal devices n=Q/mfuel*HV (burner, water heater)
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Mechanical devices (Turbine) n=Wout/Efluid
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