Microprocessor controlled evaporative cooler

Abstract

An air cooling apparatus comprised of an injector cabinet fitted with a plurality electric solenoid operated injector valves, or standard nozzles which are controlled by an advanced computerized system which regulates the amount of moisture added to the air stream by activating the injectors based on direct measurement of indoor and outdoor dry bulb and wet bulb temperatures, mass flow through the apparatus and the thermostat setting. This water injection module may be located either upstream or downstream of any air-moving device. The device is also adaptable for use with existing coolers as a retrofit kit.

1 . An apparatus for cooling air by means of the latent heat of evaporation of water comprised of a cabinet containing a new and novel plurality of electric solenoid operated injectors, or standard nozzles whose injection rate is controlled by a microprocessor that senses mass flow, inside and ambient wet and dry bulb temperatures and the set temperature of the thermostat, determines the relative humidity of the ambient and inside air and properly adjusts the amount of water injected into the inlet air stream as well as optionally controlling the speed of the air moving device.