Abstract: The growing demand for compact, eco-friendly, and portable refrigeration systems has encouraged the development of thermoelectric cooling technology. This project presents a design and development of a thermoelectric refrigerator using a TEC1-12706 Peltier module for small-scale cooling applications. The system operates based on the Peltier effect, where heat is transferred from one side of the module to the other when electric current passes through it.The proposed setup consists of a TEC1-12706 Peltier cooler kit, 12V cooling fans, and a 12V 200W SMPS power supply to drive the thermoelectric module efficiently. A conductive type 12V 100W PTC ceramic air heater with fan is integrated on the hot side to regulate and dissipate heat effectively. A mechanically fabricated insulated box is designed to maintain the cooling chamber and improve thermal efficiency. To monitor system performance, two electronic temperature detectors (thermometers) are installed—one to measure the temperature at the hot side and another at the cold side of the Peltier module.When power is supplied, the Peltier module creates a temperature difference, causing one side to become cold while the opposite side becomes hot. The cooling fan helps circulate cold air inside the chamber, while the heater-assisted heat dissipation unit ensures proper heat removal from the hot side. The system provides a compact, vibration-free, and environmentally friendly refrigeration solution without the use of refrigerants.This thermoelectric refrigeration system is suitable for portable cooling applications, food preservation, medical storage, and small electronic cooling systems, offering advantages such as low maintenance, simple construction, and eco-friendly operation.

Keywords: Thermoelectric Refrigeration, Peltier Effect, TEC1-12706 Peltier Module, Thermoelectric Cooling System, Compact Refrigerator, Solid State Cooling, PTC Ceramic Heater, Temperature Monitoring System, Electronic Temperature Detector, SMPS Power Supply, Heat Dissipation System, Portable Cooling Device.

Downloads: | DOI: 10.17148/IARJSET.2026.13387