The essence of a fog cannon is a "highly efficient and directional atomization and spraying tool".

Summer road cooling: In high-temperature weather, the temperature of urban roads (especially asphalt roads) can exceed 50℃. After the fog cannon sprays atomized water on the road surface and its surrounding areas, the local temperature can be reduced by 3-5℃ through evaporation cooling, while alleviating the "urban heat island effect" (as in the case of Neijiang mentioned in the previous news).