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The inverse of the energy efficiency in transport is the energy consumption in transport. Energy efficiency in transport is often described in terms of fuel consumption, fuel consumption being the reciprocal of fuel economy. [10] Nonetheless, fuel consumption is linked with a means of propulsion which uses liquid fuels, whilst energy 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 ...
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.
For example, it would require building 32,850 wind turbines or 52 nuclear power plants, each year for 50 years, to obtain in one year the amount of energy contained in one cubic mile of oil. [6] In 2022, Visual Capitalist estimated global consumption of oil translated into a cube 1706 meters on a side (or ~6% longer than 1 mile [1609 meters]).
Global energy consumption, measured in exajoules per year: Coal, oil, and natural gas remain the primary global energy sources even as renewables have begun rapidly increasing. [1] Primary energy consumption by source (worldwide) from 1965 to 2020 [2] World energy supply and consumption refers to the global supply of energy resources and its ...
A diesel cycle engine can be as much as 40% to 50% efficient at converting fuel into work, [2] where a typical automotive gasoline engine's efficiency is about 25% to 30%. [3] [4] In general, an engine is designed to run on a single fuel source and substituting one fuel for another may affect the thermal efficiency.
Energy efficiency in transport is often described in terms of fuel consumption, fuel consumption being the reciprocal of fuel economy. [2] Nonetheless, fuel consumption is linked with a means of propulsion which uses liquid fuels , whilst energy efficiency is applicable to any sort of propulsion.
The fuel consumption per mile or per kilometre is a more appropriate comparison for aircraft that travel at very different speeds. [citation needed] There also exists power-specific fuel consumption, which equals the thrust-specific fuel consumption divided by speed. It can have units of pounds per hour per horsepower.