A Novel Approach Development to Control Solar Air Cooler Using Intelligent Technique

An intelligent technique is used to control a novel design solar air cooler, where, a solar air cooler has two sections, one is the solar photovoltaic system and the second is an air cooler. A photovoltaic system has non-linear characteristics of active power versus voltage graph that depends on solar irradiation (Watt/Area). Thus, here, an intelligent technique is developed using Arduino IED to extract maximum power from the solar panel. At maximum power buck converter is pulsed to charge the 12V battery. Whereas a second section has a novel approach to circulate unpleasant humid air to pleasant cool air and it completes its duty in three stages. In the first stage, hot or humid air comes from the atmosphere and enters into the tank where 20 W DC pump circulates water inside the evaporator which is made of circular copper coils. The circular coil maintains the cool temperature, whenever, hot air comes into contact with the cool copper coils. In the second stage, a DC fan 60W is installed in between the coils which takes cool less humid air and exhaust through the narrow gap and in the third stage, air takes another path to circulate pleasant air. These approaches reduce 10% of relative humidity and maintain 260C temperature inside the 12ft-by-12ft room. Moreover, relative humidity and temperature are fully controlled under the hybrid condition of the proposed air cooler. Hybrid condition is the condition when the proposed air cooler runs with a split-phase air conditioner.