Energy Conversion in LED
- In LED most of the electrical energy (85%) is converted into heat
- Most of heat transfer from LED takes place via conduction though the case (no IR)
- Incandescent light converts over 95% of the electrical energy into IR and heat
Power Conversion for Light Sources
Incandescent (60W) | Fluorescent | Metal Halide | LED | |
|---|---|---|---|---|
Visible Light | 8% | 21% | 27% | 15-25% |
IR | 73% | 37% | 17% | ~0% |
UV | 0% | 0% | 19% | 0% |
Total Radiant Energy | 81% | 58% | 63% | 0% |
Heat (Conduction + Convection) | 19% | 42% | 37% | 75-85% |
Total | 100% | 100% | 100% | 100% |