energy consumption

[Joost]

Hello all,

Last week me and a few friends were discussing the enery use of our tanks.
When it cames to lighting, some said that a dimmed TL5 light consumes the same amount of electricity as one that is 100% on. Where others say that the energy consumption is much lower when the light bars have been dimmed.
What is the truth, when using 2 double GHL profilux lightbars of 2x 80watt each, separately dimmable and a Profilux Plus II?

I am pretty curious to find out!

Best Regards,
Joost

[Matthias]

the energy consumption falls with the brightness

this relation is not completely linear because the efficiency falls slightly with the output power

approx. this can be assumed:
- 100% light needs 100% energy (80W / efficiency of 98% = approx. 82W)
- 50% light needs 53% energy