Discussion on Radiation Intensity of UVC-LED Different Arrangement Types

Ultraviolet germicidal irradiation (UVGI), due to its characteristics such as mature technology, fast sterilization rate and no secondary pollution for dry disinfection, after the COVID-19 epidemic has been gradually applied to the purification of air conditioning systems such as medical institutions, food hygiene and office buildings and other fields. However, in response to the signing of the “Minamata Convention” for the international ban on mercury in 2013, and UVC-LED has the advantages of no preheating, power saving, small size, long life, non-toxicity, and single band, it has been gradually replaced trend for traditional UV lamps. In view of this, this research uses UV illuminance meter, light source test box, spectrum analyzer and other equipment, a series of experiments were conducted on the radiation intensity of different layout types of UVC-LEDs, the light attenuation with distance, and the characteristics of medium penetration, in order to serve as a reference for the application of environmental disinfection and sterilization on site.