How much does one-hour energy-saving lamp save electricity than ordinary light bulbs? How long is the life of energy-saving light bulbs compared with ordinary light bulbs? What are their advantages and disadvantages? I write papers. There is no denying that energy-saving lamps have a certain energy-saving effect, but some terms are flashing. The energy-saving effect is exaggerated.

For example, the parameters of 1 LESO 36W energy-saving lamp are as follows:

Initial light effect (lm/W)68 (equivalent to the brightness of 68W incandescent bulbs) luminous flux ≥2448lm (equivalent to the brightness of 175W incandescent bulbs). Nominal power (W) 36 Power factor: >; 0.55 Rated current: ≤0.3A Service life exceeds 8000 hours (durable incandescent bulbs reached 5000 hours as early as 1980s).

According to the current calculation, its power consumption is about 66W, which is obviously nearly 1 times higher than the nominal power of 36W. The reason lies in its power factor: >; 0.55, very low. The price is nearly 10 times that of ordinary incandescent bulbs. 36W price 36 yuan