3 ms·
…switching out the fluorescent tube lights in its factories for LEDs that would consume about one-seventh the amount of energy. Something is wrong here. Fluore
by jws 8y ago
…switching out the fluorescent tube lights in its factories for LEDs that would consume about one-seventh the amount of energy.
Something is wrong here. Fluorescent tubes to LEDs is more like a ½ savings. I suppose if you reduce overall lighting and provide task lighting you could get to 1/7, but the technologies aren’t that far off in efficiency.
Check luminous efficiency in Wikipedia for a nice table. https://en.wikipedia.org/wiki/Luminous_efficacy https://en.wikipedia.org/wiki/Luminous_efficacy
- fencepost 8y agoThe fluorescent systems in there are likely older and less efficient, so at the lower end of the range. For this kind of industrial setup you can probably do more efficient DC directly to the lights with fewer and more efficient conversions from AC, and there may be other improvements available (solar tubes, dimmable LEDs, task lighting, etc.). 7x seems high but likely achievable.
- fredsanford 8y agoDon't forget about the power used by the ballast and the heat generated there..