Reality: LED lights don't last long
Although LED lighting has the characteristics of energy saving, environmental protection, long life, easy control, and maintenance-free, it is ironic that we often hear that the LED lighting power supply itself is not directly "longevity" due to the longevity of the LED driving power supply itself. Greatly increase the maintenance/use cost; or the efficiency of the drive power is not high, so the energy conversion ratio of the LED lighting fixture is not as high as expected, or the output current ripple is not well controlled, which affects the illumination quality. The green energy-saving advantages of LED lighting have been greatly reduced, and even affected the market.
How to predict LED life?
Everything has a process of occurrence, development and demise. Although LEDs have a relatively long life compared to general light-emitting devices, they also have a certain life span. The early LEDs were just gifts such as flashlights and desk lamps. The time spent was not long and the life problem was not outstanding. But now LEDs have begun to be widely used in outdoor and indoor lighting, especially high-power LED street lights, which have high power, high heat, long working hours, and long life problems. In theory, it can last for 100,000 hours, but it is actually unknown. So where is the problem?
If the failure of the power supply and the drive is not considered, the life of the LED is manifested by its light decay, that is, the time is long, and the brightness becomes darker and darker until it is finally extinguished. A time of 30% attenuation is usually defined as its lifetime. So can the life of LEDs be predicted?
Take a deep breath, close your eyes, the world has the freshest oxygen ... Yu Quan's "Deep Breath" is well known to us, but as the environmental problems become more and more serious, the haze sky also increases, PM2.5 PM10 and so on Vocabulary has also been mentioned more and more, and air purifiers have quickly become popular on the market with this "air quality" trend. Along with this, the air-clean brand has sprung up, and various technologies are dazzling. Which ones are indeed effective and which are just tasteless propaganda? How does the Air Purifier bother us to get rid of pollution? And look at the editors for you.
Analysis of air purifier
The critical value of PM2.5 content is 75 μg / m3
The pollutants in the air mainly include soot, total suspended particulates, inhalable particulates (PM2.5) and fine particulates (PM10). The smaller the diameter of the particulates, the deeper the part that can enter the respiratory tract. 10 micron diameter particles It is deposited in the upper respiratory tract, and particles below 2 microns can penetrate 100% into the bronchiole and alveoli.
Air purifier Air Cleaner Home air purifeir sales increased by 90.5% compared with last year
According to a report recently released by the China Electronics and Information Industry Development Institute, due to the haze weather, air purifiers have become the most concerned home appliance products, with sales of nearly 2.4 million units nationwide last year, a year-on-year increase of 90.5%; retail The amount reached 5.6 billion yuan, a year-on-year increase of 105.9%.
HEPA filter needs to be replaced
The filter of the air purifier is the same as the filter of the water purifier, and it is not effective for a long time. After long-term use, the accumulation of dust on the surface of the filter will also cause the filter to gradually fail. Therefore, when the haze is more serious, the non-washable HEPA filter needs to be replaced every three months.
Negative Air Purifier,Negative Air Cleaner, Air Purifier Manufacturer in China
Ningbo Zhe Kai Electric Appliance Co.,Ltd , https://www.cnairpurifiers.com