Method and application of the air energy transition based on psychrometric energy theory

Discusses the cooling and heating method utilizing ambient air without external energy input, including the direct evaporative cooling, indirect evaporative cooling, multilevel indirect evaporative cooling and liquid desiccant evaporative cooling, and the liquid desiccant regeneration employing ambient air energy. This method breaks through the dew point temperature limit for the evaporative cooling and also extends the ambient air utilization from cooling to heating.