In Today's world global warming is being increasing year by year. There are many reasons like pollution, deforestation, water contamination, etc. In coming years the major problem before us is depletion of ozone layer which is caused by the release of CFC's. Some of the equipments which cause this effect are refrigerators, AC's. In this project we are mainly focusing on a solution to control this problem we have focused on refrigerators which releases CFC's. Here we are designing a mini refrigerator which is cheaper as well as eco-friendly.   The project aims at developing a smart refrigerator system which uses to store the medicines. The entire system is used for cooling using peltier plate. We are using step down transformer which converts 230Vac -12v AC. This 12Vac is given to the rectifier circuit which converts 12v AC to 12v DC. This 12DC we are giving input to the Peltier  plate. Thermo electric plate works with peltier effect, on applying DC voltage, the array of pellet having positive and negative charge carriers absorb heat energy from one substrate and eventually release it to the substrate at opposite side. In this process, cold surface appeared due to absorption of heat energy. This absorbed heat energy is being released to the opposite surface, becomes hot. The DC COOLING fan is attached to the system to spread the cooling air into the cooling chamber.          

Features of this project:

1. Design a mini refrigerator.
2. Using thermo electric plate for cooling.

         

The major building blocks of this project are:  

• Step down transformer.
• Rectifier circuit.
• Peltier plate.
• DC cooling fan.
• Cooling chamber.

         

Block Diagram:

   

video: