Cfl Lamp Lumens Per Watt

Up to 11 w.

Cfl lamp lumens per watt.

Up to 29 w. Leds require less wattage than cfl for the same amount of light. 1 09 based on 3 hrs day 11c kwh. The luminous flux φ v in lumens lm is equal to the power p in watts w times the luminous efficacy η in lumens per watt lm w.

The higher the lpw number the more efficient the product is. Up to 9 w. A 40w equivalent ge spiral cfl light bulb uses 10 watts of electricity to put out 580 lumens so the energy efficiency of that light bulb is 58 lumens per watt. The luminous efficacy of a typical cfl is 50 70 lumens per watt lm w and that of a typical incandescent lamp is 10 17 lm w.

φ v lm p w η lm w watts to lumens calculation. The efficiency of that light bulb is 12 75 lumens per watt. Critical components susceptible to heat failure are chosen for their high heat tolerance. As defined in our downloadable lighting glossary lumens lm are a unit of luminous flux lumens are the overall light output or quantity of light produced and a watt of course is a unit of power that is used to measure the power consumption of a lamp.

Energy saving lamps have high luminous efficacy more lumens per watt. Estimated yearly energy cost. Output and wattages based on most common products available for each medium screw based light bulb. In short led and cfl as technologies do not have a difference in brightness intrinsically.

Brightness is determined by lumens. Actual light output may vary by product. While the math for the cfl bulbs is simple the led bulbs are even more energy efficient and durable than compact fluorescent light bulbs. Lumens is best described as the measurement of light.

Costs depend on rates and use life hours. 5000k full spectrum 84 cri 60 lumens per watt maxlite 35871. Compared to a theoretical 100 efficient lamp 680 lm w cfl lamps have lighting efficiency ranges of 7 10 versus 1 5 2 5 for incandescents. For example a correct replacement for a 60w incandescent bulb would be a 15 watt cfl bulb 60 1 4 15.

Up to 43 w. Some of the most energy to light efficient led bulbs are now reaching over 120 lumens in energy star tests. A single cfl and led bulb might have the same lumen brightness output but vary greatly in the amount energy needed to generate that level of brightness. Max lite 35871 lamps are designed to manage heat so that lumen maintenance is maximized.

Use the chart above to determine exactly how many lumens are in a watt and vice versa. 9 watt equivalent to a 40 watt standard incandescent light bulb lumens per watt.