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Encyclopedia > Energy consumption

Energy consumption is a measure of the rate of energy use such as fuels or electricity. Essentially energy consumption seeks to quantify dynamic processes which create entropy. Measure can mean: To perform a measurement. ... For the workstation, see SGI Fuel. ... Lightning strikes during a night-time thunderstorm. ... The word dynamics can refer to: a branch of mechanics; see dynamics (mechanics) the volume of music; see dynamics (music) When used referring to mechanics, it is referring to the study of the motion of both rigid bodies and particles. ... Ice melting - a classic example of entropy increasing In thermodynamics, thermodynamic entropy (or simply entropy) S is an important state function of a thermodynamic system: that is, a property depending only on the current state of the system, independent of how that state came to be achieved. ...


Energy intensity is the macroeconomic measure of energy consumption. Energy demand management aims to reduce energy consumption on the demand side during specific times, while energy conservation is the broader practise of taking actions to increase energy efficiency. Energy intensity is a measure of the energy efficiency of a nations economy. ... Macroeconomics is the study of the entire economy in terms of the total amount of goods and services produced, total income earned, the level of employment of productive resources, and the general behavior of prices. ... Energy demand management is often referred to also as demand side management (DSM). ... For the physical concepts, see conservation of energy and energy efficiency. ... In physics and engineering, including mechanical and electrical engineering, energy efficiency is a dimensionless number, with a value between 0 and 1 or with times 100 given in percent. ...


Energy consumption can be measured over time for example an electrical appliance may draw 500 kilowatt hours. Running costs and expected life must be included to calculate the total running costs of an appliance. Energy consumption can be measured per kilogram, for example, when comparing the efficiency of a full washing machine load to a smaller one. Energy Star and the European Union energy label are energy labels system that allow buyers to easily make comparisons between appliances power consumption. Blender Small appliance refers to a class of appliances that are semi-portable or which are used on tabletops, countertops, or other platforms. ... The kilowatt-hour (symbol: kW·h) is a unit for measuring energy. ... The international prototype, made of platinum-iridium, which is kept at the BIPM under conditions specified by the 1st CGPM in 1889. ... Efficiency is the capability of acting or producing effectively with a minimum amount or quantity of waste, expense, or unnecessary effort. ... Front-loading washing machine. ... The ENERGY STAR logo is placed on energy-efficient products ENERGY STAR is a United States government program to promote energy efficient consumer products. ... In electrical engineering, power consumption refers to the electrical energy over time that must be supplied to an electrical device to maintain its operation. ...


Vast amounts of energy are consumed to power modern civilizations. A number of theories have been supposed that suggest sociocultural_evolution can be determined by evaluating a societies energy production and energy development technologies. The word civilization (or civilisation) has a variety of meanings related to human society. ... Theory has a number of distinct meanings in different fields of knowledge, depending on the context and their methodologies. ... In the unilineal evolution model at left, all cultures progress through set stages, while in the multilineal evolution model at right, distinctive culture histories are emphasized. ... // Energy development is the ongoing effort to provide abundant and accessible energy resources through knowledge, skills, and constructions. ... By the mid 20th century humans had achieved a level of technological mastery sufficient to leave the surface of the planet for the first time and explore space. ...


See also

Development geography is the study of the Earths geography and its relationship with economic development. ... Kardashev scale projections ranging from 1900 to 2100. ... The Olduvai theory was first introduced by Richard C. Duncan, Ph. ... Renewable energy (sources) or RES capture their energy from existing flows of energy, from on-going natural processes, such as sunshine, wind, flowing water, biological processes, and geothermal heat flows. ... The soft energy path is an energy use and development strategy delineated and promoted by some energy experts and activists, such as Amory Lovins and Tom Bender. ... Whites Law states that, other factors remaining constant, culture evolves as the amount of energy harnessed per capita per year is increased, or as the efficiency of the instrumental means of putting the energy to work is increased. ...

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