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Lecture08_Energy analysis for cycles-handout2

# Lecture08_Energy analysis for cycles-handout2 - ME200...

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1 Professor: Euiwon Bae Lecture Hours : MWF 1:30-2:20 in ME1130 Office Hours : MWF 2:30-3:30 in ME15 Email : Phone : 765-494-6849 Course website : http://engineering.purdue.edu/ME200 ME200 : Thermodynamics I Lecture 8 : Energy analysis for cycles

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2 Outline Cycle energy balance Power cycles Refrigeration and heat pump cycles
3 Cycle analysis - How does the energy balance (1 st law of Thermodynamics) applies to the real system -> thermodynamic cycles - ‘Cycle’ implies that no net change of states

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4 Cycle energy balance Δ E cycle = Q W ; net amounts of energy transfer by heat and work By definition of cycle Q = W ; conservation of Energy T H (High Temp) T c (Low Temp) Q System Power cycles
5 Cycle energy balance Refrigeration and heat pump cycles T H (High Temp) T c (Low Temp) in Q Q System

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6 Power cycles Net amount of work is transferred to the surroundings W cycle = Q in - Q out T H (Heat source) T c (Heat sink) W=Q in -Q out Qin Qout System Q = heat transfer into the system from heat source (burning fuels or nuclear reaction) Q = heat transfer out of the system to the heat sink (discharged to the surroundings)
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Lecture08_Energy analysis for cycles-handout2 - ME200...

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