DOE released the LED lights with traditional lighting performance comparison analysis report

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In 2001, BPA art projection lamp replacement as an energy project, with the 15W and 23W compact fluorescent lamps (CFL) replace PAR38 halogen lamps. The GATEWAY show compared Cree PAR38 12W the LED lights with two types of CFL optical properties, such as led underground light intensity, power, energy consumption, life. CFL than the Cree PAR38 12W LED emit more light, LED light distribution is quite narrow, reducing the intensity of the art wall above the light can be gathered in the works of art. And phase, for 23W PAR38 15W R30 CFL, LED can increase the work of art with the wall between the vertical lighting contrast.

GATEWAY Project goals include improving the visibility of the hall, art, showing works of lighting quality, and the new LED replacement lamp lighting appearance. BPA is also concerned about this new technology, energy consumption and cost saving potential, and the Pacific Northwest National Laboratory (the PNNL) cooperation, the report analyzes the lighting performance before and after the lighting retrofit.

, LED lights with CFL showing the effect of contrast

Table 1 Comparison between CFLs and LED lights. Two different types of CFL lam ps were installed in different locations of the hall. The divergence angle of the two fluorescent lamps are more than 110 °, while the Cree LED is only 18 °. The optical density of the center beam of LED products is significantly larger than the fluorescent lamps is much higher, fluorescent 300, while the LED to the 4465, which makes the LED lamps can be more light is concentrated in the local area.