THERMOELECTRIC REFRIGERATION SYSTEM

THERMOELECTRIC REFRIGERATION SYSTEM

ABSTRACT
        

Just by hearing the word “Refrigeration “the effect of cooling come in front of us. Refrigeration is not only luxurious in today’s living style, it become a part and partial of our life because it has wide applications like domestics refrigerator for food preservation, pasteurization of milk in milk dairies, also in ice-cream industry, in   textile   industry   and what not? Thus refrigeration has become integral part of our life.
         Today compression based refrigeration system is used widely. No doubt it has very good coefficient of   performance, however due to environmental   degradation of its refrigerants it becomes serious problem.   This   refrigeration   system   uses refrigerants    like    chlorofluorocarbons    (CFCs)   & hydro chlorofluorocarbons   (H CFCs), which   leak   in production, use and disposal, & reacts with ozone gas in the stratosphere & results in the depletion of ozone layer.  Due to this, very dangerous ultra violet radiation reaches to the earth which causes problems like skin cancer, eye erector, damage to the crop etc.   So there is a need of alternative refrigeration systems or eco-friendly refrigerants.
         To   avoid    this    problem attempts    are    going on to find eco-friendly refrigerants.  Experiments are made by using CO2, NH3, water etc. These attempts are somewhat successful. Here one new concept of refrigeration comes in to picture and that is the thermo-electric refrigeration system. In this   paper I am going to discuss THERMO-ELECTRIC REFRIGERATION SYSTEM as eco-friendly refrigeration system.
The thermoelectric refrigeration system works on the Peltier effect, it is just opposite of the temperature measuring device ‘thermocouple’. It is the eco-friendly refrigeration system because it does not give out any hazardous product to nature; it is just based on the effect of thermoelectricity.
The paper includes the introduction, comparison with conventional cooling system, basic principle, working, current technology, material development, advantages, limitations, applications and future developments.