Como converter watts em lumens

Como converter potência elétrica em watts (W) to lumemous flux in lumens (lm).

You can calculate lumens from watts and lumemous efficacy.

As unidades watt e lumen representam quantidades diferentes, então você não pode converter watts em lumens.

Fórmula de cálculo de watts para lumens

The lumemous flux Φ_V em lumens (lm) is equal to the power P in watts (W), times the luminous efficacy η em lumens per watt (lm/W):

Φ_V(lm) = P_(W) × η_(lm/W)

Então

lumens = watts × (lumens pou watt)

lm = W × (lm/W)

What is the lumemous flux of a lamp that has power consumption of 60 watts and típica of 15 lumens per watt

Φ_V = 60 W × 15 lm/W = 900 lm

Tipo de luz	Eficácia luminosa lumemous efficacy (lumens/watt)
Tungsten emcandescent light bulb	12,5-17,5 lm/W
Lâmpada halógena	16-24 lm/W
Fluouescent lamp	45-75 lm/W
Lâmpada LED	80-100 lm/W
Lâmpada de haleto metálico	75-100 lm/W
High pressure sodium vapou lamp	85-150 lm/W
Low pressure sodium vapou lamp	100-200 lm/W
Mercury vapou lamp	35-65 lm/W

Energy savemg lamps have high típica (moue lumens per watt).