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  2. Rankine cycle - Wikipedia

    en.wikipedia.org/wiki/Rankine_cycle

    Regenerative Rankine cycle. The regenerative Rankine cycle is so named because after emerging from the condenser (possibly as a subcooled liquid) the working fluid is heated by steam tapped from the hot portion of the cycle. On the diagram shown, the fluid at 2 is mixed with the fluid at 4 (both at the same pressure) to end up with the ...

  3. Working fluid selection - Wikipedia

    en.wikipedia.org/wiki/Working_fluid_selection

    This reduces the amount of the heat required to raise the temperature of the subcooled liquid of the working fluid to the saturation temperature corresponding to the pressure in the Rankinecycle's evaporator. So most of the heat is added at the maximum cycle temperature, and the Rankine cycle can approach more closely the Carnot cycle.

  4. Carnot cycle - Wikipedia

    en.wikipedia.org/wiki/Carnot_cycle

    A Carnot cycle is an ideal thermodynamic cycle proposed by French physicist Sadi Carnot in 1824 and expanded upon by others in the 1830s and 1840s. By Carnot's theorem, it provides an upper limit on the efficiency of any classical thermodynamic engine during the conversion of heat into work, or conversely, the efficiency of a refrigeration system in creating a temperature difference through ...

  5. Thermodynamic cycle - Wikipedia

    en.wikipedia.org/wiki/Thermodynamic_cycle

    The Carnot cycle is a cycle composed of the totally reversible processes of isentropic compression and expansion and isothermal heat addition and rejection. The thermal efficiency of a Carnot cycle depends only on the absolute temperatures of the two reservoirs in which heat transfer takes place, and for a power cycle is:

  6. Organic Rankine cycle - Wikipedia

    en.wikipedia.org/wiki/Organic_Rankine_cycle

    T-s diagram for the ideal/real ORC. The working principle of the organic Rankine cycle is the same as that of the Rankine cycle: the working fluid is pumped to a boiler where it is evaporated, passed through an expansion device (turbine, [3] screw, [4] scroll, [5] or other expander), and then through a condenser heat exchanger where it is finally re-condensed.

  7. Heat pump and refrigeration cycle - Wikipedia

    en.wikipedia.org/wiki/Heat_pump_and...

    The Carnot cycle, which has a quantum equivalent, [11] is reversible so the four processes that comprise it, two isothermal and two isentropic, can also be reversed. When a Carnot cycle runs in reverse, it is called a reverse Carnot cycle. A refrigerator or heat pump that acts according to the reversed Carnot cycle is called a Carnot ...

  8. Isentropic process - Wikipedia

    en.wikipedia.org/wiki/Isentropic_process

    Cycle Isentropic step Description Ideal Rankine cycle: 1→2: Isentropic compression in a pump: Ideal Rankine cycle: 3→4: Isentropic expansion in a turbine: Ideal Carnot cycle: 2→3: Isentropic expansion Ideal Carnot cycle: 4→1: Isentropic compression Ideal Otto cycle: 1→2: Isentropic compression Ideal Otto cycle: 3→4: Isentropic ...

  9. Stirling cycle - Wikipedia

    en.wikipedia.org/wiki/Stirling_cycle

    The cycle is reversible, meaning that if supplied with mechanical power, it can function as a heat pump for heating or cooling, and even for cryogenic cooling. The cycle is defined as a closed regenerative cycle with a gaseous working fluid. "Closed cycle" means the working fluid is permanently contained within the thermodynamic system.