Cfl Lamp Lumens Per Watt

φ v lm p w η lm w watts to lumens calculation.

Cfl lamp lumens per watt.

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. Lumens is best described as the measurement of light. Critical components susceptible to heat failure are chosen for their high heat tolerance. That s more than 4 5 times as efficient as the ge incandescent light bulb.

9 watt equivalent to a 40 watt standard incandescent light bulb lumens per watt. Brightness is determined by lumens. Energy saving lamps have high luminous efficacy more lumens per watt. 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.

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. For example a correct replacement for a 60w incandescent bulb would be a 15 watt cfl bulb 60 1 4 15. On average an incandescent bulb produces around 14 lumens per watt compared to 63 lumens for energy saving compact fluorescents cfl and 74 for led bulbs. Leds require less wattage than cfl for the same amount of light.

Estimated yearly energy cost. Up to 9 w. Costs depend on rates and use life hours. Up to 11 w.

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. Up to 43 w. The higher the lpw number the more efficient the product is. Lumens to watts calculator watts to lumens calculation.

Output and wattages based on most common products available for each medium screw based light bulb. 1 09 based on 3 hrs day 11c kwh. Use the chart above to determine exactly how many lumens are in a watt and vice versa. In short led and cfl as technologies do not have a difference in brightness intrinsically.

Some of the most energy to light efficient led bulbs are now reaching over 120 lumens in energy star tests. Up to 29 w. 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. 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.

Actual light output may vary by product. Max lite 35871 lamps are designed to manage heat so that lumen maintenance is maximized.