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  2. Compressed-air energy storage - Wikipedia

    en.wikipedia.org/wiki/Compressed-air_energy_storage

    An up-to-45% reduction in fuel consumption is claimed, corresponding to 2.9 L / 100 km (81 mpg, 69 g CO 2 /km) on the New European Driving Cycle (NEDC) for a compact frame like Peugeot 208. The system is claimed to be much more affordable than competing electric and flywheel KERS systems and is expected on road cars by 2016.

  3. Ragone plot - Wikipedia

    en.wikipedia.org/wiki/Ragone_plot

    Ragone plot showing specific energy versus specific power for various energy-storing devices. A Ragone plot (/ r ə ˈ ɡ oʊ n iː / rə-GOH-nee) [1] is a plot used for comparing the energy density of various energy-storing devices.

  4. Range extender - Wikipedia

    en.wikipedia.org/wiki/Range_extender

    The Li Auto One is a large SUV which combines a 41-kWh battery with a small 1.2-litre gasoline engine. [36] [37] This approach has also been used for heavy vehicles, such as Wrightbus's Gemini 2 [38] and New Routemaster [39] buses. Hydrogen fuel cells have also been used as a range extender for battery electric buses, allowing them to have ...

  5. Internal combustion engine - Wikipedia

    en.wikipedia.org/wiki/Internal_combustion_engine

    The battery's charged state is maintained by an automotive alternator or (previously) a generator which uses engine power to create electrical energy storage. The battery supplies electrical power for starting when the engine has a starting motor system, and supplies electrical power when the engine is off. The battery also supplies electrical ...

  6. Turboexpander - Wikipedia

    en.wikipedia.org/wiki/Turboexpander

    The system in the figure implements a Rankine cycle as it is used in fossil-fuel power plants, where water is the working fluid and the heat source is derived from the combustion of natural gas, fuel oil or coal used to generate high-pressure steam. The high-pressure steam then undergoes an isentropic expansion in a conventional steam turbine ...

  7. Energy storage - Wikipedia

    en.wikipedia.org/wiki/Energy_storage

    It aims to enable the expansion of rechargeable battery production with increased quality and lower cost. [127] [128] From 2023 onwards, a new project by the German Research Foundation focuses on molecular photoswitches to store solar thermal energy. The spokesperson of these so-called molecular solar thermal (MOST) systems is Prof. Dr. Hermann ...

  8. AOL Mail for Verizon Customers - AOL Help

    help.aol.com/products/aol-mail-verizon

    AOL Mail welcomes Verizon customers to our safe and delightful email experience!

  9. Energy conversion efficiency - Wikipedia

    en.wikipedia.org/wiki/Energy_conversion_efficiency

    The energy efficiency of a fuel cell is generally between 40 and 60%; however, if waste heat is captured in a cogeneration scheme, efficiencies of up to 85% can be obtained. [24] World average fossil fuel electricity generation power plant as of 2008 [25] Chemical to electrical Gross output 39%, Net output 33% Electricity storage: Lithium-ion ...