Search
- https://chem.libretexts.org/Courses/University_of_Georgia/CHEM_3212%3A_Physical_Chemistry_II/06%3A_Entropy_Part_I/6.02%3A_Heat_Engines_and_the_Carnot_CycleTo simplify his analysis of the inner workings of an engine, Carnot devised a useful construct for examining what affect engine efficiency. His construct is the heat engine. The idea behind a heat eng...To simplify his analysis of the inner workings of an engine, Carnot devised a useful construct for examining what affect engine efficiency. His construct is the heat engine. The idea behind a heat engine is that it will take energy in the form of heat, and transform it into an equivalent amount of work. Unfortunately, such a device is impractical. As it turns out, nature prevents the complete conversion of energy into work with perfect efficiency. This leads to an important statement of the Sec
- https://chem.libretexts.org/Bookshelves/Physical_and_Theoretical_Chemistry_Textbook_Maps/Physical_Chemistry_(Fleming)/05%3A_The_Second_Law/5.01%3A_Introduction_to_the_Second_LawThe text discusses fundamental principles of thermodynamics as articulated by Rudolf Clausius???specifically, the conservation of energy and the increase of entropy. It delves into the second law of t...The text discusses fundamental principles of thermodynamics as articulated by Rudolf Clausius???specifically, the conservation of energy and the increase of entropy. It delves into the second law of thermodynamics, which introduces the concept of entropy and how it influences our perception of time and irreversible processes. The discussion includes spontaneous processes, which occur without external forces and may not be predicted solely by energy changes.
- https://chem.libretexts.org/Courses/San_Francisco_State_University/General_Physical_Chemistry_I_(Gerber)/05%3A_Entropy_and_The_Second_Law_of_Thermodynamics/5.07%3A_Thermodynamics_Provides_Insight_into_the_Conversion_of_Heat_into_WorkHeat and work are both forms of transferring energy, and under the right circumstance, one form may be transformed into the other. However, the second law of thermodynamics puts a limitation on this. ...Heat and work are both forms of transferring energy, and under the right circumstance, one form may be transformed into the other. However, the second law of thermodynamics puts a limitation on this. To go from work to heat is called dissipation and there is no limitation on this at all. In fact it was through dissipation (by friction) that we discovered that heat and work were both forms of energy. There is, however, a limitation on converting heat to work.
- https://chem.libretexts.org/Courses/DePaul_University/Physical_Chemistry_for_Biological_Sciences/11%3A_Entropy_and_The_Second_Law_of_Thermodynamics/11.07%3A_Thermodynamics_Provides_Insight_into_the_Conversion_of_Heat_into_WorkHeat and work are both forms of transferring energy, and under the right circumstance, one form may be transformed into the other. However, the second law of thermodynamics puts a limitation on this. ...Heat and work are both forms of transferring energy, and under the right circumstance, one form may be transformed into the other. However, the second law of thermodynamics puts a limitation on this. To go from work to heat is called dissipation and there is no limitation on this at all. In fact it was through dissipation (by friction) that we discovered that heat and work were both forms of energy. There is, however, a limitation on converting heat to work.
- https://chem.libretexts.org/Courses/DePaul_University/Thermodynamics_and_Introduction_to_Quantum_Mechanics_(Southern)/03%3A_The_Second_and_Third_Laws_of_Thermodynamics/3.02%3A_Heat_Engines_and_the_Carnot_CycleTo simplify his analysis of the inner workings of an engine, Carnot devised a useful construct for examining what affect engine efficiency. His construct is the heat engine. The idea behind a heat eng...To simplify his analysis of the inner workings of an engine, Carnot devised a useful construct for examining what affect engine efficiency. His construct is the heat engine. The idea behind a heat engine is that it will take energy in the form of heat, and transform it into an equivalent amount of work. Unfortunately, such a device is impractical. As it turns out, nature prevents the complete conversion of energy into work with perfect efficiency. This leads to an important statement of the Sec
- https://chem.libretexts.org/Bookshelves/Physical_and_Theoretical_Chemistry_Textbook_Maps/DeVoes_Thermodynamics_and_Chemistry/04%3A_The_Second_Law/4.03%3A_Concepts_Developed_with_Carnot_EnginesA Carnot engine is a particular kind of heat engine, one that performs Carnot cycles with a working substance. A Carnot cycle has four reversible steps, alternating isothermal and adiabatic.
- https://chem.libretexts.org/Courses/University_of_Florida/CHM2047%3A_One-Semester_General_Chemistry_(Kleiman)/11%3A_Spontaneous_Processes_and_Thermodynamic_Equilibrium/11.08%3A_Carnot_Cycle_Efficiency_and_EntropyThe Carnot cycle has the greatest efficiency possible of an engine (although other cycles have the same efficiency) based on the assumption of the absence of incidental wasteful processes such as fric...The Carnot cycle has the greatest efficiency possible of an engine (although other cycles have the same efficiency) based on the assumption of the absence of incidental wasteful processes such as friction, and the assumption of no conduction of heat between different parts of the engine at different temperatures.
- https://chem.libretexts.org/Courses/Millersville_University/CHEM_341-_Physical_Chemistry_I/05%3A_The_Second_Law/5.04%3A_Heat_Engines_and_the_Carnot_CycleTo simplify his analysis of the inner workings of an engine, Carnot devised a useful construct for examining what affect engine efficiency. His construct is the heat engine. The idea behind a heat eng...To simplify his analysis of the inner workings of an engine, Carnot devised a useful construct for examining what affect engine efficiency. His construct is the heat engine. The idea behind a heat engine is that it will take energy in the form of heat, and transform it into an equivalent amount of work. Unfortunately, such a device is impractical. As it turns out, nature prevents the complete conversion of energy into work with perfect efficiency. This leads to an important statement of the Sec
- https://chem.libretexts.org/Bookshelves/Physical_and_Theoretical_Chemistry_Textbook_Maps/Thermodynamics_and_Chemical_Equilibrium_(Ellgen)/09%3A_The_Second_Law_-_Entropy_and_Spontaneous_Change/9.02%3A_The_Carnot_Cycle_for_an_Ideal_Gas_and_the_Entropy_ConceptThe economic viability of the steam engine derives, in part, from the fact that the spent steam can be vented to the atmosphere at the end of each cycle. The energy input to the Carnot engine is \(q_h...The economic viability of the steam engine derives, in part, from the fact that the spent steam can be vented to the atmosphere at the end of each cycle. The energy input to the Carnot engine is qh, and the useful work that appears in the surroundings is ˆwnet. (The heat accepted by the low-temperature reservoir, ˆqℓ=−qℓ>0, is a waste product, in the sense that it represents energy that cannot be converted to mechanical work using this cycle.
- https://chem.libretexts.org/Bookshelves/Physical_and_Theoretical_Chemistry_Textbook_Maps/Physical_Chemistry_(LibreTexts)/20%3A_Entropy_and_The_Second_Law_of_Thermodynamics/20.07%3A_Thermodynamics_Provides_Insight_into_the_Conversion_of_Heat_into_WorkThis page discusses energy transfer via heat and work, highlighting the second law of thermodynamics which restricts heat-to-work conversion. It describes the Carnot cycle, detailing its four stages a...This page discusses energy transfer via heat and work, highlighting the second law of thermodynamics which restricts heat-to-work conversion. It describes the Carnot cycle, detailing its four stages and efficiency formula η=1−TcTh. It also covers a circular reversible process on a PV diagram and emphasizes the role of temperature in determining efficiency.
- https://chem.libretexts.org/Bookshelves/General_Chemistry/Map%3A_Principles_of_Modern_Chemistry_(Oxtoby_et_al.)/Unit_4%3A_Equilibrium_in_Chemical_Reactions/13%3A_Spontaneous_Processes_and_Thermodynamic_Equilibrium/13.8%3A_Carnot_Cycle_Efficiency_and_EntropyThe Carnot cycle has the greatest efficiency possible of an engine (although other cycles have the same efficiency) based on the assumption of the absence of incidental wasteful processes such as fric...The Carnot cycle has the greatest efficiency possible of an engine (although other cycles have the same efficiency) based on the assumption of the absence of incidental wasteful processes such as friction, and the assumption of no conduction of heat between different parts of the engine at different temperatures.
