Automated Arduino and peltier Based Smart Cooling system

Abstract

The Automated Arduino and peltier Based Smart Cooling system is a smart and energy-efficient cooling system designed using thermoelectric technology. The system primarily utilizes Peltier Module to achieve cooling based on the principle of heat transfer when electric current is applied. Two Peltier modules are used to enhance cooling performance, where the cold side is placed inside the chamber and the hot side is cooled externally using heat dissipation methods. To improve cooling efficiency, two cooling fans are employed for proper air circulation, while a mini water pump assists in removing heat from the hot side through a liquid cooling mechanism. The internal temperature and humidity of the chamber are continuously monitored using a DHT11 Sensor, and the data is processed by an Arduino Uno. A potentiometer is used to set the desired temperature within a range of 0°C to 50°C, allowing the user to easily control the system according to requirements. Based on the comparison between the set temperature and the measured temperature, the Arduino automatically controls the operation of the Peltier modules, fans, and water pump through relay modules. When the temperature exceeds the set value, the system turns ON, and when it falls below the set value, the system turns OFF, ensuring efficient energy usage. Additionally, a Motor Driver is incorporated to handle the high current requirements of the Peltier modules (rated at 12V, 6A), ensuring safe and stable operation. The system is powered by a 220V AC supply, which is converted into 12V DC using an SMPS, and further regulated to 5V using a buck converter for low-power components. An I2C LCD display is used to show real time temperature, humidity, set temperature, and system status, providing a user friendly interface. Overall, the system offers an efficient, compact, and reliable solution for maintaining controlled temperature environments in small-scale applications.