When.com Web Search

Search results

  1. Results From The WOW.Com Content Network
  2. European Union energy label - Wikipedia

    en.wikipedia.org/wiki/European_Union_energy_label

    A new energy label, introduced in 2010, is based on the energy efficiency index (EEI), and has energy classes in the range A+++ to D. [11] The EEI is a measure of the annual electricity consumption, and includes energy consumed during power-off and standby modes, and the energy consumed in 220 washing cycles.

  3. Comparison of CRT, LCD, plasma, and OLED displays - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_CRT,_LCD...

    Varies based on image brightness and color. For the majority of images it will consume 60–80% of the power of an LCD. OLED displays use 40% of the power of an LCD displaying an image that is primarily black as they lack the need for a backlight , [ 40 ] while OLED can use more than three times as much power to display a mostly white image ...

  4. World energy supply and consumption - Wikipedia

    en.wikipedia.org/wiki/World_energy_supply_and...

    World energy supply and consumption refers to the global supply of energy resources and its consumption. The system of global energy supply consists of the energy development, refinement, and trade of energy. Energy supplies may exist in various forms such as raw resources or more processed and refined forms of energy.

  5. List of countries by energy consumption and production

    en.wikipedia.org/wiki/List_of_countries_by...

    This is a list of countries by total primary energy consumption and production. 1 quadrillion BTU = 293 T W·h = 1.055 E J. 1 quadrillion BTU/yr = 1.055 EJ/yr = 293 TW·h/yr = 33.433 GW. The numbers below are for the total energy consumption or production in a whole year, so should be multiplied by 33.433 to get the average value in GW in that ...

  6. List of countries by energy consumption per capita - Wikipedia

    en.wikipedia.org/wiki/List_of_countries_by...

    Social Progress Index vs Energy Use per capita, 2015. List of countries by Social Progress Index. World energy consumption per capita based on 2021 data. This is a list of countries by total energy consumption per capita. This is not the consumption of end-users but all energy needed as input to produce fuel and electricity for end-users.

  7. Photosynthetic efficiency - Wikipedia

    en.wikipedia.org/wiki/Photosynthetic_efficiency

    The photosynthetic efficiency is the fraction of light energy converted into chemical energy during photosynthesis in green plants and algae. Photosynthesis can be described by the simplified chemical reaction. 6 H 2 O + 6 CO 2 + energy → C 6 H 12 O 6 + 6 O 2. where C 6 H 12 O 6 is glucose (which is subsequently transformed into other sugars ...

  8. List of countries by electricity consumption - Wikipedia

    en.wikipedia.org/wiki/List_of_countries_by...

    List of countries by electricity consumption. 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] This list of countries by electric energy consumption is mostly based on the Energy Information Administration. [2]

  9. Energy Star - Wikipedia

    en.wikipedia.org/wiki/Energy_Star

    Energy Star (trademarked ENERGY STAR) is a program run by the U.S. Environmental Protection Agency (EPA) and U.S. Department of Energy (DOE) that promotes energy efficiency. [4] The program provides information on the energy consumption of products and devices using different standardized methods. The Energy Star label [5] is found on more than ...