Carnot engine
E917683
A Carnot engine is an idealized heat engine that operates on a reversible Carnot cycle between two thermal reservoirs and represents the maximum possible efficiency any heat engine can achieve.
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
idealized heat engine
ⓘ
thermodynamic model ⓘ |
| assumes |
no dissipative losses
ⓘ
no friction ⓘ no heat transfer during adiabatic steps ⓘ perfect thermal contact during isothermal steps ⓘ quasi-static processes ⓘ |
| basedOn | Carnot cycle NERFINISHED ⓘ |
| cannotBe | realized perfectly in practice ⓘ |
| converts | heat to work ⓘ |
| cycleType | reversible cycle ⓘ |
| efficiencyDependsOn |
temperature of cold reservoir
ⓘ
temperature of hot reservoir ⓘ |
| efficiencyFormula | 1 - Tc/Th ⓘ |
| efficiencyLessThanOrEqualTo | 1 - Tc/Th for any real engine ⓘ |
| formsBasisFor | thermodynamic temperature scale ⓘ |
| hasColdReservoirTemperatureSymbol | Tc GENERATED ⓘ |
| hasEfficiency | maximum possible for given temperature reservoirs ⓘ |
| hasEfficiencySymbol | η ⓘ |
| hasEntropyChangeOverCycle | zero ⓘ |
| hasHeatAbsorbedSymbol | Qh ⓘ |
| hasHeatInput | isothermal expansion at Th ⓘ |
| hasHeatRejectedSymbol | Qc ⓘ |
| hasHeatRejection | isothermal compression at Tc ⓘ |
| hasHotReservoirTemperatureSymbol | Th ⓘ |
| hasNetInternalEnergyChangeOverCycle | zero ⓘ |
| hasProcess |
adiabatic compression
ⓘ
adiabatic expansion ⓘ isothermal compression ⓘ isothermal expansion ⓘ |
| hasRepresentation |
T-S diagram
ⓘ
p-V diagram ⓘ |
| hasReservoir |
cold reservoir
ⓘ
hot reservoir ⓘ |
| hasWorkOutput | area enclosed by Carnot cycle on p-V diagram ⓘ |
| introducedInWork | Reflections on the Motive Power of Fire NERFINISHED ⓘ |
| is |
reversible
ⓘ
theoretical construct ⓘ |
| namedAfter | Sadi Carnot NERFINISHED ⓘ |
| obeys |
first law of thermodynamics
ⓘ
second law of thermodynamics ⓘ |
| operatesBetween | two thermal reservoirs ⓘ |
| relatedConcept |
Carnot theorem
NERFINISHED
ⓘ
heat pump ⓘ refrigerator ⓘ reversible process ⓘ |
| requires | infinite number of infinitesimal steps ⓘ |
| setsLimitFor | efficiency of real heat engines ⓘ |
| usedAs | benchmark for engine performance ⓘ |
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.