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  2. Ideal gas law - Wikipedia

    en.wikipedia.org/wiki/Ideal_gas_law

    Isotherms of an ideal gas for different temperatures. The curved lines are rectangular hyperbolae of the form y = a/x. They represent the relationship between pressure (on the vertical axis) and volume (on the horizontal axis) for an ideal gas at different temperatures: lines that are farther away from the origin (that is, lines that are nearer to the top right-hand corner of the diagram ...

  3. Mean radiant temperature - Wikipedia

    en.wikipedia.org/wiki/Mean_radiant_temperature

    A handheld wet-bulb globe temperature meter, including a black-globe thermometer (left). The MRT can be estimated using a black-globe thermometer.The black-globe thermometer consists of a black globe in the center of which is placed a temperature sensor such as the bulb of a mercury thermometer, a thermocouple or a resistance probe.

  4. Gas constant - Wikipedia

    en.wikipedia.org/wiki/Gas_constant

    From the ideal gas law PV = nRT we get: = where P is pressure, V is volume, n is number of moles of a given substance, and T is temperature. As pressure is defined as force per area of measurement, the gas equation can also be written as:

  5. NRG Solar Achieves Commercial Operation of Two Solar PV ...

    www.aol.com/2013/07/12/nrg-solar-achieves...

    For premium support please call: 800-290-4726 more ways to reach us

  6. Ontario, California - Wikipedia

    en.wikipedia.org/wiki/Ontario,_California

    Ontario, California – Racial and ethnic composition Note: the US Census treats Hispanic/Latino as an ethnic category. This table excludes Latinos from the racial categories and assigns them to a separate category. Hispanics/Latinos may be of any race. Race / Ethnicity (NH = Non-Hispanic) Pop 2000 [52] Pop 2010 [53] Pop 2020 [54] % 2000 % 2010 ...

  7. List of energy abbreviations - Wikipedia

    en.wikipedia.org/wiki/List_of_energy_abbreviations

    Ontario—IESO Ontario Independent Electricity System Operator (Canada) OPEC—Organization of Petroleum-Exporting Countries (oil) OPRG—oxygenated fuels program reformulated gasoline (oil) OREC-ocean resource energy credits; ORNL—Oak Ridge National Laboratory (U.S.) (nuclear) OSHA—U.S. Department of Labor Occupational Safety and Health ...

  8. Photovoltaic system performance - Wikipedia

    en.wikipedia.org/wiki/Photovoltaic_system...

    PV performance can be measured as the ratio of actual solar PV system output vs expected values, the measurement being essential for proper solar PV facility's operation and maintenance. The primary energy input is the global light irradiance in the plane of the solar arrays, and this in turn is a combination of the direct and the diffuse ...

  9. Panel generation factor - Wikipedia

    en.wikipedia.org/wiki/Panel_generation_factor

    "Total Watt-Hours per Day" = "Total Watt-hours per day needed by appliances" Multiplied by "1.3 times" (the energy lost in the system). Now, to calculate "size of PV cells" OR "number of PV cells" just divide the above obtained "Total Watt-Peak Rating" by "Watt-Peak of each cell OR Watt-Peak of each square meter size", whichever is convenient.