ABSTRACT

 The rising energy demand, the rising price of fossil oil, and rising environmental concerns have all contributed to a global uptick in research and development for renewable energy sources. As air conditioning has become nearly essential in modern buildings for occupant comfort, advancements in solar-powered air conditioning have accelerated in recent years. The work’s study aims to develop a Peltier-operated air cooler coupled with a dual-axis solar tracker to achieve the dual objectives of increasing energy by tracking sun rays from switching solar panels in various directions and sensible cooling. The work aims to perform testing of Peltier for indoor cooling. The desired design is intended to provide a good alternative to Air Conditioners which consume sufficiently high power with a very large initial investment.

The air cooler design was done using Proteus software based on certain electrical calculations. The assembly starts with a main propeller which is used to blow the ambient air through a vent. The vent is attached to the blower fan and is connected to a powerful motor, which is capable of sucking moist air from ice to give a cooling effect to enclosed surrounding. Equipped with a DHT11 temperature and humidity sensor, this air cooler can measure the temperature of its environment and convert the input data into electronic data to record, monitor, or signal temperature changes. The air cooler has a "buzzer", a yellow LED, a temperature regulator, and a humidity detector. The temperature regulator is preset at 30 degrees Celsius, meaning that if the temperature goes over 30 degrees, the buzzer turns on, and when the temperature reduces below 30 degrees Celsius, the buzzer goes off, and a blue LED turns on to signify that temperature has reduced. Again, when the room, becomes too cold, the temperature regulator kicks in and the air cooler reduces its cooling activities until there's a need for the coldness of the room, which is automatically detected by the sensor.

The test results obtained show that the humidity increases as temperature drops (data obtained from Table 4.1 and the graph shown in Figure 4.1), which is the basic operating principle of an air cooler. Thus, the project is considered successful.