Search results
Results from the WOW.Com Content Network
[1] [2] The energy efficiency is also occasionally known as energy intensity. [3] 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. [2]
The refractive index of air is approximately 1.0003. [64] Denser media, such as water, [65] glass, [66] and diamond, [67] have refractive indexes of around 1.3, 1.5 and 2.4, respectively, for visible light. In exotic materials like Bose–Einstein condensates near absolute zero, the effective speed of light may be only a few metres per second.
The energy mix is a group of different primary energy sources from which secondary energy for direct use - such as electricity - is produced. [1] Energy mix refers to all direct uses of energy, such as transportation and housing, and should not be confused with power generation mix, which refers only to generation of electricity, [ 2 ] as ...
The electrical energy input of this cell is 1.20 times greater than the theoretical minimum so the energy efficiency is 0.83 compared to the ideal cell. A water electrolysis unit operating with a higher voltage that 1.48 V and at a temperature of 25 °C would have to have heat energy removed in order to maintain a constant temperature and the ...
Electricity consumption by region. By 2025, Asia is projected to account for half of the world’s electricity consumption, with one-third of global electricity to be consumed in China. [1] Electric energy consumption is energy consumption in the form of electrical energy. [2]
[1] The fuel economy in aircraft is the measure of the transport energy efficiency of aircraft. Fuel efficiency is increased with better aerodynamics and by reducing weight, and with improved engine brake-specific fuel consumption and propulsive efficiency or thrust-specific fuel consumption.
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 ...
In aerospace engineering, payload fraction is a common term used to characterize the efficiency of a particular design. The payload fraction is the quotient of the payload mass and the total vehicle mass at the start of its journey.