Evaporative cooler including an air-to-air counter-flow heat exchanger having a reverse temperature profile

摘要

An evaporative cooler air conditioning system comprising an air-to-air counter-flow heat exchanger having separate dry cooling and wet evaporating chambers, air saturating elements, and air movement devices. Ambient supply air or other fluid is forced through the dry cooling chamber of the heat exchanger and exits, after transferring through the heat exchanger, into the cooled spaced or room to be cooled. The air in the cooled space absorbs heat from the heat load and reaches an equilibrium at a warmer temperature, and is then forced directly through the wet evaporative chamber of the heat exchanger where it is heavily saturated with water or other liquid. As the air or other fluid passes through the wet evaporating enclosure a reverse temperature profile results and heat is drawn from the supply air fluid on the dry side through the heat exchanger to evaporate the water or other liquid; it results in the cooling of the supply air or other fluid exiting the dry side of the heat exchanger to a temperature that can be significantly below its wet-bulb temperature and approaching to its dew point temperature.