LED vs metal halide lighting comparison: efficacy (130-180 vs 65-115 lm/W), CRI (80-95 vs 65-85 Ra), lumen maintenance (…
| 对比维度 | 选项A | 选项B | 优胜 |
|---|---|---|---|
| Efficacy | 130-180 lm/W | 65-115 lm/W | LED (50-100% more) |
| CRI | 80-95 Ra | 65-85 Ra (varies by type) | LED (consistent quality) |
| Lumen Maintenance (L70) | 50,000-100,000 hours | 6,000-15,000 hours | LED (5-10× longer) |
| Restrike Time | Instant on/off | 10-15 minutes after power cycle | LED (no downtime) |
| Color Shift Over Life | <5% shift (stable) | 30-50% shift (noticeable pink/green) | LED (stable color) |
| UV/IR Emission | None | High UV (fades merchandise) | LED (retail-safe) |
| 5-Year TCO (100 fixtures) | $18,000-35,000 | $38,000-65,000 | LED (50-55% savings) |
| Best For | Stadium, arena, retail, warehouse, gym | Legacy high-ceiling only — phase-out recommended | LED (modern standard) |
LED在每项关键指标上超越金卤灯：能效高50-100%、流明维持长5-10倍、颜色稳定无粉/绿偏色、即开即亮(体育转播关键)、无紫外(零售商品安全)、5年TCO低50-55%。金卤灯是运营成本最高的传统技术——体育场馆改造LED通常每年仅电费就节省15-50万美元。现有金卤灯应优先LED改造：ROI通常12-24个月。