actionjbone@sh.itjust.works 17 hours ago
Everyone knows the sun was not replaced with a giant LED.
LEDs with no heat. It was replaced with a giant halogen bulb.
actionjbone@sh.itjust.works 17 hours ago
Everyone knows the sun was not replaced with a giant LED.
LEDs with no heat. It was replaced with a giant halogen bulb.
kkj@lemmy.dbzer0.com 17 hours ago
LEDs produce about half their input energy in heat, with the other half being light. Incandescent bulbs output about 90% as heat and 10% as light.
Thorry@feddit.org 17 hours ago
This can very a lot depending on the LED. The average LED is indeed somewhere around the 50% and 60% mark. But there are LEDs out there that can get up to 90+%
kkj@lemmy.dbzer0.com 15 hours ago
The highest I’m seeing for wall-plug efficiency (i.e. the percentage of the consumed electricity that’s released as light rather than heat) is 83.2%, and that’s for red LEDs. For anything you’d want to use for general-purpose lighting, the number is much lower.
Thorry@feddit.org 14 hours ago
Yeah wall plug efficiency is much harder since you need to do the power conversion as well, in a small and cheap way for mass production. I’d assume they have a specialized power supply for the big LED in the sky?
There are super efficient LEDs used in flashlights, the lumen per watt figures these days are absolutely crazy.