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Revision
❑Engine works on thermal cycles = power Cycles
❑Carnot Cycle is one of the theoretical cycle
❑Carnot engine works on Carnot cycle
❑Carnot Cycle & Carnot Engine both are hypothetical concepts or
ideal theory
❑Carnot cycle is used to compare the performance of other cycles
❑Carnot Cycle is not a good model for most real processes• For
example• Internal combustion engine •Gas turbine
❑No engine gives the performance as like Carnot cycle (Which is
theoretical cycle )
❑In Carnot cycle/Engine there are Two Isothermal ( out of that one
is Expansion & another one is compression process) & Two
Adiabatic processes are carried out
❑Carnot Cycle can explain with the help of P-V & T-S Dia.
❑In Carnot engine, cylinder & Piston arrangement is considered
Continued………
Otto cycle consists of four processes:
• –Isentropic compression (1-2)
• –Isochoric (constant volume) heat addition (2-3)
• –Isentropic expansion (3-4)
• –Isochoric (constant volume) heat rejection (4-1)
Bme l5.pptx
Bme l5.pptx

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Bme l5.pptx

  • 1. Revision ❑Engine works on thermal cycles = power Cycles ❑Carnot Cycle is one of the theoretical cycle ❑Carnot engine works on Carnot cycle ❑Carnot Cycle & Carnot Engine both are hypothetical concepts or ideal theory ❑Carnot cycle is used to compare the performance of other cycles ❑Carnot Cycle is not a good model for most real processes• For example• Internal combustion engine •Gas turbine ❑No engine gives the performance as like Carnot cycle (Which is theoretical cycle ) ❑In Carnot cycle/Engine there are Two Isothermal ( out of that one is Expansion & another one is compression process) & Two Adiabatic processes are carried out ❑Carnot Cycle can explain with the help of P-V & T-S Dia. ❑In Carnot engine, cylinder & Piston arrangement is considered
  • 2.
  • 3.
  • 4. Continued……… Otto cycle consists of four processes: • –Isentropic compression (1-2) • –Isochoric (constant volume) heat addition (2-3) • –Isentropic expansion (3-4) • –Isochoric (constant volume) heat rejection (4-1)