LED energy-saving knowledge

Assuming a family use 10 lamp to calculate electricity charge

(Comparative data: ordinary incandescent lamp according to 15 - 20lm/w, the ordinary energy-saving lamps to 30 - 60lm/w, LED energy saving lamp at 120 150lm/w , this data is only for reference, there is a slight discrepancy because of different market pricing.)

1. Ordinary incandescent electricity bill:
   10 x 60W/ x 5 hours / day * 365 days / year =1095000W/ hours =1095 degree
   A year electricity bill =1095 x 1 RMB / degree =1095 RMB
2. Ordinary energy-saving lamps electricity bill::
   10 x 15W/ x 5 hours / day * 365 days / year =273735W/ hours =274 degree
   A year electricity =274 x 1RMB / degrees =274 RMB
3. LED energy saving lamp electricity bill:
   10 x4w/ x5 hours / x365 days / year =73000w/ hours =73 degrees
   A year electricity bill:=73 x 1 RMB / degrees=73 RMB
   A year electricity bill saving by LED energy saving lamp relative to ordinary incandescent lamp:
   1095 RMB -73 RMB =1022 RMB

The first purchase lamps cost calculation:

1. ordinary incandescent lamp:
   10 x 1 RMB /piece = 10 RMB , the average service life is 2000 hours (about 1 years).
2. LED energy saving lamp:
   10 x 55 RMB/piece = 550 RMB , the average service life is 30000 hours (about 6 years).
   

Comparative analysis from the above data, LED energy saving lampcan recover the investment cost within a year: LED energy saving lamp input 550 RMB - the common energy-saving lamp 10 RMB = 540 RMB

LED energy saving lampcan save electricity bill 1022 RMB /year-540RMB = 482 RMB (Surplus bill)

Assuming a medium-sized supermarkets use 1000 lamp to calculate electricity charge

(comparative data: ordinary incandescent lamp to 15 - 20lm/w, the ordinary energy-saving lamps to 30 - 60lm/w, LED energy saving lamp at 120 150lm/w calculation, this data is only for reference, there is a slight discrepancy because of different market pricing.)

1. ordinary incandescent electricity:
   1000 x 60W/ x 12 hours / day * 365 days / year =262800000W/ hours =262800 degree
   A year electricity =262800 x 1 RMB / degree=262800 RMB
2. ordinary energy-saving lamps electricity:
   1000 x 15W/ x 12 hours / day * 365 days / year =65700000W/ hours =65700 degree
   A year electricity =65700 x 1 RMB/ degree=65700 RMB
3. LED energy saving lamp electricity:
   1000 x4w/ X12 H / x365 days / year =17520000w/ hours =17520 degree
   A year electricity =17520 x 1 RMB/ degrees=17520 RMB

A year electricity bill saving by LED energy saving lamp relative to ordinary incandescent lamp: 65700 RMB-17520 RMB=48180RMB

The first purchase lamps cost calculation:

1. ordinary energy-saving lamps:
   1000 x 20 RMB /piece= 20000RMB, the average service life is 8000 hours (about 2 years).
2. LED energy saving lamp:
   1000 x 55 RMB /piece = 55000 RMB, the average service life is 30000 hours (about 6 years).

Comparative analysis from the above data, LED energy saving lamp can recover the investment cost within a year: LED energy saving lamp input 55000 RMB - the common energy-saving lamp 20000 RMB = 35000 RMB

48180 RMB / year-35000 RMB = 13180 RMB (Surplus bill)

Statement: the above content only for propaganda, not as other basis.