T8 Fluorescent Tube Lumens Per Watt

What is the light output of t8 fluorescent lamps.

T8 fluorescent tube lumens per watt.

Figure 4 shows these efficacy values which range from 81 to 99 lpw for 121 t8 fluorescent lamp models from nine manufacturers. Tube lights under 1800 lumens require fewer watts than t8 lamps that product over 2000 lumens. The wattage for led tube lights varies depending on light output as well. About 50 lumens per watt for a fluorescent tube compared to 10 lumens per watt for an incandescent bulb.

A common t8 bulb is the f32t8 which uses 32 watts of power. 3000 initial lumens 5 more light output than standard 800 series t8 lamp. For example a no t5 tube light can range between 14 watts to 35 watts while an ho t5 fluorescent tube light will usually range between 24 watts and 80 watts. A popular t8 fluorescent tube is rated at 2850 lumens but what is the true output and where does that light go.

The average fluorescent lamp has 60 lm w efficiency. In reality though most people are looking for a cheap 2 50 bulb or even less. Effective lumens are a measure of true output to accurately compare a fluorescent to an led fixture. Therefore total lumens power in watt lumens efficiency 40 60 2400 lumens.

Alto ii technology uses less mercury for an environmentally safer lamp. Philips advantage brand high performance bright white 32 watt t8 fluorescent lamp with excellent 800 series color rendering. The watts needed for t5 lighting will increase with the type of output. The amount of light generated by 32 watt t8 fluorescent lamps varies considerably from one lamp model to the next.

The efficacy of the fluorescent tube will range from around 16 lumens per watt for a 4 watt tube with a regular ballast to more than 100 lumens per watt for a tube featuring a modern electronic ballast. A f17t8 is a 17 watt fluorescent t8 lamp. For fluorescent bulbs the number after f tells you how many watts. Effective lumens can be determined using the following equation.

For example nlpip selected a lamp power of 32 5 watts which is the standard value listed for this lamp type ansi c78 81 2005. Lumen outputs can vary per 4 fluorescent bulb depending on the type wattage and manufacture. With that said the answers are misleading. Effective lumens rl cu bf lld ldd lbo.