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- https://phys.libretexts.org/Bookshelves/University_Physics/Physics_(Boundless)/14%3A_Thermodynamics/14.4%3A_EntropyThe entropy of a system is a measure of its disorder and of the unavailability of energy to do work.
- https://phys.libretexts.org/Workbench/PH_245_Textbook_V2/07%3A_Module_6_-_Thermodynamics/7.02%3A_Objective_6.b./7.2.10%3A_Statements_of_the_Second_Law_of_ThermodynamicsThe second law of thermodynamics can be stated in several different ways, and all of them can be shown to imply the others. In terms of heat engines, the second law of thermodynamics may be stated as ...The second law of thermodynamics can be stated in several different ways, and all of them can be shown to imply the others. In terms of heat engines, the second law of thermodynamics may be stated as follows: It is impossible to convert the heat from a single source into work without any other effect.
- https://phys.libretexts.org/Courses/Joliet_Junior_College/Physics_201_-_Fall_2019v2/Book%3A_Custom_Physics_textbook_for_JJC/14%3A_Thermodynamics/14.25%3A_EntropyThe entropy of a system is a measure of its disorder and of the unavailability of energy to do work.
- https://phys.libretexts.org/Courses/Joliet_Junior_College/Physics_201_-_Fall_2019v2/Book%3A_Custom_Physics_textbook_for_JJC/14%3A_Thermodynamics/14.15%3A_Statements_of_the_Second_Law_of_ThermodynamicsThe second law of thermodynamics can be stated in several different ways, and all of them can be shown to imply the others. In terms of heat engines, the second law of thermodynamics may be stated as ...The second law of thermodynamics can be stated in several different ways, and all of them can be shown to imply the others. In terms of heat engines, the second law of thermodynamics may be stated as follows: It is impossible to convert the heat from a single source into work without any other effect.
- https://phys.libretexts.org/Courses/Skyline/Survey_of_Physics/12%3A_Thermodynamics/12.06%3A_Applications_of_Thermodynamics-_Heat_Pumps_and_RefrigeratorsAn artifact of the second law of thermodynamics is the ability to heat an interior space using a heat pump. Heat pumps compress cold ambient air and, in so doing, heat it to room temperature without v...An artifact of the second law of thermodynamics is the ability to heat an interior space using a heat pump. Heat pumps compress cold ambient air and, in so doing, heat it to room temperature without violation of conservation principles. To calculate the heat pump’s coefficient of performance, use the equation COPhp=QhW. A refrigerator is a heat pump; it takes warm ambient air and expands it to chill it.
- https://phys.libretexts.org/Bookshelves/College_Physics/College_Physics_1e_(OpenStax)/15%3A_Thermodynamics/15.05%3A_Applications_of_Thermodynamics-_Heat_Pumps_and_RefrigeratorsAn artifact of the second law of thermodynamics is the ability to heat an interior space using a heat pump. Heat pumps compress cold ambient air and, in so doing, heat it to room temperature without v...An artifact of the second law of thermodynamics is the ability to heat an interior space using a heat pump. Heat pumps compress cold ambient air and, in so doing, heat it to room temperature without violation of conservation principles. To calculate the heat pump’s coefficient of performance, use the equation COPhp=QhW. A refrigerator is a heat pump; it takes warm ambient air and expands it to chill it.
- https://phys.libretexts.org/Bookshelves/University_Physics/University_Physics_(OpenStax)/University_Physics_II_-_Thermodynamics_Electricity_and_Magnetism_(OpenStax)/04%3A_The_Second_Law_of_Thermodynamics/4.05%3A_Statements_of_the_Second_Law_of_ThermodynamicsThe second law of thermodynamics can be stated in several different ways, and all of them can be shown to imply the others. In terms of heat engines, the second law of thermodynamics may be stated as ...The second law of thermodynamics can be stated in several different ways, and all of them can be shown to imply the others. In terms of heat engines, the second law of thermodynamics may be stated as follows: It is impossible to convert the heat from a single source into work without any other effect.
- https://phys.libretexts.org/Courses/Joliet_Junior_College/Physics_201_-_Fall_2019v2/Book%3A_Custom_Physics_textbook_for_JJC/14%3A_Thermodynamics/14.14%3A_Refrigerators_and_Heat_PumpsThe cycles we used to describe the engine in the preceding section are all reversible, so each sequence of steps can just as easily be performed in the opposite direction. In this case, the engine is ...The cycles we used to describe the engine in the preceding section are all reversible, so each sequence of steps can just as easily be performed in the opposite direction. In this case, the engine is known as a refrigerator or a heat pump, depending on what is the focus: the heat removed from the cold reservoir or the heat dumped to the hot reservoir. Either a refrigerator or a heat pump is an engine running in reverse.
- https://phys.libretexts.org/Courses/Joliet_Junior_College/Physics_201_-_Fall_2019/Book%3A_Physics_(Boundless)/13%3A_Thermodynamics/13.6%3A_EntropyThe entropy of a system is a measure of its disorder and of the unavailability of energy to do work.
- https://phys.libretexts.org/Courses/Joliet_Junior_College/Physics_201_-_Fall_2019/Book%3A_Physics_(Boundless)/13%3A_Thermodynamics/13.2%3A_The_Second_Law_of_Thermodynamics/Refrigerators_and_Heat_PumpsThe cycles we used to describe the engine in the preceding section are all reversible, so each sequence of steps can just as easily be performed in the opposite direction. In this case, the engine is ...The cycles we used to describe the engine in the preceding section are all reversible, so each sequence of steps can just as easily be performed in the opposite direction. In this case, the engine is known as a refrigerator or a heat pump, depending on what is the focus: the heat removed from the cold reservoir or the heat dumped to the hot reservoir. Either a refrigerator or a heat pump is an engine running in reverse.
- https://phys.libretexts.org/Workbench/PH_245_Textbook_V2/07%3A_Module_6_-_Thermodynamics/7.02%3A_Objective_6.b./7.2.08%3A_Refrigerators_and_Heat_PumpsThe cycles we used to describe the engine in the preceding section are all reversible, so each sequence of steps can just as easily be performed in the opposite direction. In this case, the engine is ...The cycles we used to describe the engine in the preceding section are all reversible, so each sequence of steps can just as easily be performed in the opposite direction. In this case, the engine is known as a refrigerator or a heat pump, depending on what is the focus: the heat removed from the cold reservoir or the heat dumped to the hot reservoir. Either a refrigerator or a heat pump is an engine running in reverse.
