Heat sink design of Thermoelectric Module for cooling system

Abstract

Normally the cooling box used for the delivery of a frozen foods cannot preserved the food temperature for a long time and may cause the food quality deteriorated. This work focuses on the mechanism on how to preserve food and to investigate the current requirements to provide optimum thermoelectric cooler for temperature range between 5°C to 15°C. The design process focuses on designing a combination of heat sink and motor fan on a thermoelectric cooler. These two devices determined the changes in the temperature range inside the cooler box. This cooling system used Thermoelectric Module (TEM) as an actuator and also as the cooling element in the cooling system. Here, the foods are kept inside within the range of desired temperature setting. The temperature sensor measures the temperature and sends the data to the Arduino microcontroller. The Arduino gives the signal based on the set point and regulate the desired temperature inside the refrigeration system whereas the relay module was used as an ON-OFF controller to control the desired temperature setting. Preliminary result showed that thermoelectric cooler can produce the desired temperature range with the help of heat sink and DC fan as part of the cooling element in the system.