Environmental comparison
LED street lights do not contain mercury, no ultraviolet radiation, and the low working temperature effectively reduces heat emissions. Because of its power-saving, it saves coal for power generation and uses less coal to generate electricity, thereby saving carbon dioxide emissions! The high-pressure sodium lamp contains mercury and ultraviolet radiation. It emits a lot of heat during work, consumes electricity, wastes coal, and emits a lot of carbon dioxide! The PF of an LED street light is greater than 0.99, and the power factor of a high-pressure sodium lamp is about 0.44. In this way, the pollution of the LED to the power grid is very small, while the pollution of high-pressure sodium lamps to the power grid is very large! LED lamps have no stroboscopic and no light pollution, while HPS lamps have obvious stroboscopic and serious light pollution.
