Design & fabrication of bismuth telluride (Bi2Te3) based small capacity peltier effect refrigerator

 The most energy-consuming home appliances are refrigeration and air conditioner and for that reason, many researchers had carried out the performance of the refrigeration system. The main focus of this study is to obtain low energy consumption and enhancement of green refrigeration by using the thermoelectric effect technique. In this small capacity refrigerator, the Peltier effect technique is used to reduce the internal temperature. A thermoelectric plate of lightweight material Bismuth Telluride (Bi2Te3) material, strengthen and had lower thermal- conductivity of 0.02 W/m K, is used having one hot side and another cold side. Heat moved from the internal hot side to the external cold side, resulting in temperature reduction in the internal volume of the refrigerator with help of the Peltier effect. In this thermoelectric refrigerator, a volume of 125L cooled and maintained the temperature range from 35°C to 20°C in near about 4 minutes and 35°C to 23°C in approximately 22 minutes without using internal load and without using internal load respectively. Furthermore, it is environmentally friendly and has low energy consumption. In addition, globally demand for refrigeration is increasing day by day and it is a great threat because the concentration of CO2 has been increased in the atmosphere for a few years and it caused global warming and enhanced the effects of the other climate change