*Under the same brightness, to use the 8000H, incandescence lamp and energy saving lamp and LED at the same time can consume each.
other compare:
incandescence lamp
Energy-saving
LED
Light flux (light degree)(LM)
the same brightness 1200LM
Light effect(LM/N)
12lm/w
60lm/W
50lm/W
Power(W)
100w
20W
1W
Practicality time(h)
8000h
Consume electricity degree
800kw/h
160kw/h
30kw/h
Electric(¥/kw/h)
¥0.5/kw/h
Total electric
¥400
¥80
¥15
Life time(h)
2000hx4=8000h
8000h
30000h
Lamp- house unit price
¥2x4pcs=¥8
¥15/pcs
¥36/pcs
Cost saving
(¥400+¥8)-(¥80+¥15)=¥313; (¥80+¥15)-(¥15+¥36)=¥44. under the coord inative brightnessuse 8000 hours,20 watts't energy saving lamp than 100watts incandescence lamp more saving 313yuan.
*Gold halogen lamp is point relative to the general lamp nothing more, under the same light effect precondition, more electricity energy saving. Along with the technology development, still be will have more energy and more light effect new better product come forth.