Power Generation through Waste Heat

The Peltier effect is a type of thermoelectric effect that is observed in an electric circuit. It was named after Jean Charles Athanase Peltier, the physicist who discovered the effect in 1834. Peltier when current is made to flow through a circuit consisting of two different types of conductors, a heating or cooling effect is observed at the junctions between the two materials. This change in temperature at the junction is called the Peltier effect. Peltier elements are commonly used in consumer products. For example, Peltier elements are used in camping, portable coolers, cooling electronic components and small instruments. The cooling effect of Peltier heat pumps can also be used to extract water from the air in dehumidifiers. A camping/car type electric cooler can typically reduce the temperature by up to 20 °C (36 °F) below the ambient temperature. Climate-controlled jackets are beginning to use Peltier elements. Thermo electric coolers are used to augment heat sinks for microprocessors. They are also used for wine coolers. A thermoelectric generator (TEG), also called a See beck generator, is a solid state device that converts heat flux (temperature differences) directly into electrical energy through a phenomenon called the See beck effect (a form of thermoelectric effect). Thermoelectric generators function like heat engines, but are less bulky and have no moving parts. However, TEGs are typically more expensive and less efficient. Thermoelectric generators could be used in power plants in order to convert waste heat into additional electrical power and in automobiles as automotive thermoelectric generators (ATGs) to increase fuel efficiency. Another application is radioisotope thermoelectric generators which are used in space probes, which has the same mechanism but use radioisotopes to generate the required heat difference in 1821, Thomas Johann See beck discovered that a thermal gradient formed between two dissimilar conductors can produce electricity. At the heart of the thermoelectric effect is the fact that a temperature gradient in a conducting material results in heat flow; this results in the diffusion of charge carriers. The flow of charge carriers between the hot and cold regions in turn creates a voltage difference. In 1834, Jean Charles Athanase Peltier discovered the reverse effect that running an electric current through the junction of two dissimilar conductors could, depending on the direction of the current, cause it to act as a heater or cooler. The project is totally depends on the all the waste heat of automobile bodies or for any industrial place which has waste heat is observed there this installation can be takes place from where amount of the heat can be obtained as per the peltier plates installation. And the most important think about this concept is to avoid the uses of extra power generation from the battery that can be minimize the uses of batteries in automobile bodies. It can be also use at boiler also amd furnace. The operating range of our project is 120 0c- 180 0c which closely to high range which can be generate the up to 12 volts as per the calculations. The peltier plates are connected in series.