LED Lamp saves energy during dimming

- Apr 26, 2017-

LED Lamp saves energy during dimming

  It is a well known fact that when we require lesser light output, then lamp may be operated at lower power level. It can save energy. This may not hold true for all lamps in a linear relationship. Refer to Fig-2. It shows that when 60 W GLS lamp operates at 30 W [50% Dimmed], then its light output actually reduces to 20% of its rated lumens. Hence, we won’t get any saving. The quality of light output is deteriorated from yellow/orange to orange/red colour rendering. The other lamp CFL also gets less efficient when dimmed because they become cold and result in less light output. But in case of LED lamp, dimming will result less operating temperature (hot), so their efficiency increase. This provides us more light output for same power input compared to other lamps.

  It includes that LED lamp may be more efficient at dimmed condition than at full load.


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