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  2. Power-to-weight ratio - Wikipedia

    en.wikipedia.org/wiki/Power-to-weight_ratio

    Toshiba 660 MVA water cooled 23 kV AC turbo generator: 1,342 t 2,959,000 lb 660 MW 890,000 hp 0.49 kW/kg 0.30 hp/lb Bayswater, Eraring coal-fired power stations: Canopy Tech. Cypress 32 MW 15 kV AC PM generator [29] 33,557 kg 73,981 lb 32 MW 43,000 hp 0.95 kW/kg 0.58 hp/lb Electric power stations: Turncircles AF24PM–S axial flux motor [30]

  3. Energy efficiency in transport - Wikipedia

    en.wikipedia.org/wiki/Energy_efficiency_in_transport

    This is around 1 ⁄ 5 (20%) of what is needed to power a standard upright bicycle without aerodynamic cladding at same speed, and 1 ⁄ 50 (2%) of that which is consumed by an average fossil fuel or electric car (the velomobile efficiency corresponds to 4700 miles per US gallon, 2000 km/L, or 0.05 L/100 km). [22]

  4. Orders of magnitude (power) - Wikipedia

    en.wikipedia.org/wiki/Orders_of_magnitude_(power)

    1–5 × 10 4 W tech: nominal power of clear channel AM [24] 1.00 × 10 4 W eco: average power consumption per person in the United States in 2008 (87,216 kWh/year) 1.4 × 10 4 W tech: average power consumption of an electric car on EPA's Highway test schedule [25] [26] 1.45 × 10 4 W astro: power per square metre received from the Sun at ...

  5. Power rating - Wikipedia

    en.wikipedia.org/wiki/Power_rating

    For AC-operated devices (e.g. coaxial cable, loudspeakers), there may even be two power ratings, a maximum (peak) power rating and an average power rating. [ 5 ] [ 6 ] For such devices, the peak power rating usually specifies the low frequency or pulse energy, while the average power rating limits high-frequency operation. [ 5 ]

  6. Ton of refrigeration - Wikipedia

    en.wikipedia.org/wiki/Ton_of_refrigeration

    It was originally defined as the rate of heat transfer that results in the freezing or melting of 1 short ton (2,000 lb; 907 kg) of pure ice at 0 °C (32 °F) in 24 hours. [ 1 ] [ 2 ] The modern definition is exactly 12,000 Btu IT /h (3.516853 kW ).

  7. Evaporative cooler - Wikipedia

    en.wikipedia.org/wiki/Evaporative_cooler

    A 1.5 ton/4.4 kW cooling system requires just 200 watts for operation of the fan, giving a COP of 26.4 and an EER rating of 90. This does not take into account the energy required to purify or deliver the water, and is strictly the power required to run the device once water is supplied.

  8. S&P 500, Dow close at record highs on tech, retail in focus - AOL

    www.aol.com/news/futures-inch-ahead-shortened...

    (Reuters) -The S&P 500 and Dow Jones Industrial Average notched record closing highs in a shortened Black Friday session, lifted by technology stocks such as Nvidia, while retail was in focus as ...

  9. Electric vehicle battery - Wikipedia

    en.wikipedia.org/wiki/Electric_vehicle_battery

    The charging power can be connected to the car in two ways. The first is a direct electrical connection known as conductive coupling . This might be as simple as a mains lead into a weatherproof socket through special high capacity cables with connectors to protect the user from high voltages .