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  2. Engine efficiency - Wikipedia

    en.wikipedia.org/wiki/Engine_efficiency

    They determined that the cost of a ton of oil fuel used in steam engines was $5.04 and yielded 20.37 train miles system wide on average. Diesel fuel cost $11.61 but produced 133.13 train miles per ton. In effect, diesels ran six times as far as steamers utilizing fuel that cost only twice as much.

  3. Diesel generator - Wikipedia

    en.wikipedia.org/wiki/Diesel_generator

    Other high-viscosity fuels like tallow, vegetable oil, or paraffin wax can be used with standard fuel injectors if the fuel is preheated to reduce its viscosity to the range of standard diesel fuel. The engine designed by and built by Rudolf Diesel for the 1900 World's Fair was fueled with peanut oil rather than a petroleum product like most ...

  4. Hydrogen turboexpander-generator - Wikipedia

    en.wikipedia.org/wiki/Hydrogen_turboexpander...

    Per stage, 200 bar is handled with up to 15,000 kW power and a maximum expansion ratio of 14, the generator loaded expander for hydrogen gas is fitted with an automatic thrust balance, a dry gas seal, and a programmable logic control with remote monitoring and diagnostics. [1]

  5. 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 ...

  6. Energy conversion efficiency - Wikipedia

    en.wikipedia.org/wiki/Energy_conversion_efficiency

    For example, an ideal fuel cell operating at a temperature of 25 °C having gaseous hydrogen and gaseous oxygen as inputs and liquid water as the output could produce a theoretical maximum amount of electrical energy of 237.129 kJ (0.06587 kWh) per gram mol (18.0154 gram) of water produced and would require 48.701 kJ (0.01353 kWh) per gram mol ...

  7. Brayton cycle - Wikipedia

    en.wikipedia.org/wiki/Brayton_cycle

    In 1874, Brayton solved the explosion problem by adding the fuel just prior to the expander cylinder. The engine now used heavier fuels such as kerosene and fuel oil. Ignition remained a pilot flame. [4] Brayton produced and sold "Ready Motors" to perform a variety of tasks like water pumping, mill operation, running generators, and marine ...

  8. Volume correction factor - Wikipedia

    en.wikipedia.org/wiki/Volume_Correction_Factor

    These methods are often more time-consuming than entering the values into a VCF calculator; however, due to the variance in methodology and computation of constants, the tables published by the American Petroleum Institute are preferred when dealing with the purchase and sale of crude oil and residual fuels. [7]

  9. Cold gas thruster - Wikipedia

    en.wikipedia.org/wiki/Cold_gas_thruster

    A cold gas thruster (or a cold gas propulsion system) is a type of rocket engine which uses the expansion of a (typically inert) pressurized gas to generate thrust.As opposed to traditional rocket engines, a cold gas thruster does not house any combustion and therefore has lower thrust and efficiency compared to conventional monopropellant and bipropellant rocket engines.