Carnot cycle
E531749
The Carnot cycle is an idealized thermodynamic cycle that defines the maximum possible efficiency any heat engine can achieve when operating between two temperature reservoirs.
Observed surface forms (1)
| Surface form | Occurrences |
|---|---|
| Carnot heat engine | 1 |
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
idealized heat engine cycle
ⓘ
thermodynamic cycle ⓘ |
| assumes |
no friction
ⓘ
no heat losses other than to reservoirs ⓘ quasi-static processes ⓘ reversible processes ⓘ |
| category |
heat engine cycles
ⓘ
ideal thermodynamic cycles ⓘ |
| comparedWith | real heat engine cycles ⓘ |
| consistsOf |
adiabatic compression
ⓘ
adiabatic expansion ⓘ isothermal compression ⓘ isothermal expansion ⓘ |
| defines | maximum possible efficiency of a heat engine between two temperature reservoirs ⓘ |
| efficiencyDependsOn |
temperature of cold reservoir
ⓘ
temperature of hot reservoir ⓘ |
| hasAssumption |
reservoirs have constant temperature
ⓘ
working fluid returns to initial state after cycle ⓘ |
| hasEfficiencyFormula | 1 - Tc/Th ⓘ |
| hasKeyConcept |
entropy change
ⓘ
reversibility ⓘ thermal efficiency ⓘ |
| hasProcessType |
reversible adiabatic compression
ⓘ
reversible adiabatic expansion ⓘ reversible isothermal heat addition ⓘ reversible isothermal heat rejection ⓘ |
| hasProperty |
net work output per cycle
ⓘ
zero total entropy change for system plus reservoirs in ideal case ⓘ |
| hasWorkingSubstance | ideal gas ⓘ |
| implies | no engine can be more efficient than a Carnot engine between same reservoirs ⓘ |
| introducedBy | Sadi Carnot NERFINISHED ⓘ |
| introducedInWork | Reflections on the Motive Power of Fire NERFINISHED ⓘ |
| namedAfter | Sadi Carnot NERFINISHED ⓘ |
| obeys |
first law of thermodynamics
ⓘ
second law of thermodynamics ⓘ |
| operatesBetween |
cold reservoir
ⓘ
hot reservoir ⓘ |
| relatedTo |
Carnot theorem
NERFINISHED
ⓘ
Clausius inequality NERFINISHED ⓘ Kelvin-Planck statement of the second law NERFINISHED ⓘ |
| representedOnDiagram |
P-V diagram
ⓘ
T-S diagram ⓘ |
| represents | upper limit of heat engine efficiency ⓘ |
| usedIn |
heat engine theory
ⓘ
statistical mechanics education ⓘ thermodynamics ⓘ |
Referenced by (6)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Sadi Carnot
this entity surface form:
Carnot heat engine