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  2. LED lamp - Wikipedia

    en.wikipedia.org/wiki/LED_lamp

    A 230-volt LED filament lamp, with an E27 base. The filaments are visible as the eight yellow vertical lines. An assortment of LED lamps commercially available in 2010: floodlight fixtures (left), reading light (center), household lamps (center right and bottom), and low-power accent light (right) applications An 80W Chips on board (COB) LED module from an industrial light luminaire, thermally ...

  3. Luminous efficacy - Wikipedia

    en.wikipedia.org/wiki/Luminous_efficacy

    It is the ratio of luminous flux to power, measured in lumens per watt in the International System of Units (SI). Depending on context, the power can be either the radiant flux of the source's output, or it can be the total power (electric power, chemical energy, or others) consumed by the source.

  4. Thermal management of high-power LEDs - Wikipedia

    en.wikipedia.org/wiki/Thermal_management_of_high...

    For heat transfer between LED sources over 15 Watt and LED coolers, it is recommended to use a high thermal conductive interface material (TIM) which will create a thermal resistance over the interface lower than 0.2 K/W. Currently, the most common solution is to use a phase-change material, which is applied in the form of a solid pad at room ...

  5. Orders of magnitude (power) - Wikipedia

    en.wikipedia.org/wiki/Orders_of_magnitude_(power)

    tech: the power consumption of a typical Light-emitting diode (LED) light bulb 8 tech: human-powered equipment using a hand crank. [14] 10 1: deca-(daW) 1.4 × 10 1: tech: the power consumption of a typical household compact fluorescent light bulb: 2–4 × 10 1: biomed: approximate power consumption of the human brain [15] 3–4 × 10 1

  6. Lighting power density - Wikipedia

    en.wikipedia.org/wiki/Lighting_power_density

    Space By Space Method. A defined list of many possible space types within a building the associated watts per square foot allowance. For example, ANSI/ASHRAE/IESNA Standard 90.1-2007 allows the Emergency Space of a hospital to be designed for 2.7 watts per square foot, but the Recovery areas of a hospital would be allowed 0.8 watts per square foot.

  7. Energy conversion efficiency - Wikipedia

    en.wikipedia.org/wiki/Energy_conversion_efficiency

    For example, a green laser pointer can have greater than 30 times the apparent brightness of a red pointer of the same power output. At 555 nm in wavelength, 1 watt of radiant energy is equivalent to 683 lumens, thus a monochromatic light source at this wavelength, with a luminous efficacy of 683 lm/w, would have a luminous efficiency of 100%.

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