THERMO ELECTRIC COOLERS

THERMOELECTRIC COOLERS Conventional air conditioners used in homes and industries rely on refrigerants such as hydro fluorocarbon, which is a threat to ozone layer of the earth. On the other hand thermoelectric coolers are environment friendly, compact and affordable. Thermoelectric (TE) coolers, also known as peltier coolers, offer effective,practical options for heat management in compact optoelectronic devices such as dense - wavelength - division- multiplexing(DWDM) components and charge - coupled - device (CCD) detectors. In many cases, TE coolers offer significant advantages over more conventional cooling methods because they offer active cooling, precise controllability,no moving parts, small size, and ability to control below ambient temperature. The paper also discuss the necessary materials required in constructing a thermoelectric cooler and suggesting few measures to increase the efficiency with reference to material sciences and unleashes many advantages such as "electrically quiet operation'', ''operation in any orientation'', ''spot cooling'', ''environment friendly'' and most important ''ability to generate electricity''. Although there is a variety of applications that use thermoelectric devices,all of them are based on the same principle.