Transcript
- Slide 1
- Slide 2
- The Second Law of Thermodynamics Steven Bearden Ariel Lewis Rebecca White
- Slide 3
- Statements of the Second Law
- Slide 4
- No process is possible which consists solely in the transfer of heat from one temperature level to a higher one. Work is required HotCold Heat X
- Slide 5
- No apparatus can operate in such a way that its only effect in the system and surroundings is to completely convert heat absorbed by a system into work done by the system. You cant have 100% conversion of heat into work within a closed system.
- Slide 6
- Entropy Entropy is the driving force to equilibrium. Intrinsic property that represents the unavailability of a systems thermal energy for conversion into mechanical work.
- Slide 7
- Carnot Engine Completely reversible No friction Infinitesimal Temperature difference No unrestrained expansion No change in surroundings
- Slide 8
- Heat Engine Realistic example Heat reservoirs Rejected heat Irreversibility
- Slide 9
- Overview Flaws in first law Importance of second law