Peltier junctions (thermoelectric devices) do this:derekmohammed said:Is it possible to convert heat energy into electrical energy.
derekmohammed said:Hi,
Is it possible to convert heat energy into electrical energy. (Excluding boiler engines, ect...) Following along the lines of capacitance and capitors...
Thanks.
Derek Mohammed
http://www.autobahn.mb.ca/~het/energy/pv_fqa.html#Section02NClausius2 said:What about photovoltaic cells?derekmohammed said:Is it possible to convert heat energy into electrical energy.
Heat is converted into electricity through a process called thermoelectric conversion. This involves using a material that can produce an electric current when there is a temperature difference between its two ends. When one end of the material is heated, it creates an electric potential that can be harnessed to generate electricity.
Thermoelectric materials are typically semiconductors, which are materials that have properties of both conductors and insulators. Some common thermoelectric materials include bismuth telluride, lead telluride, and silicon germanium.
The efficiency of thermoelectric conversion depends on several factors, including the type of material used, the temperature difference between the two ends of the material, and the design of the conversion system. Currently, the most efficient thermoelectric materials have an efficiency of around 15-20%, but researchers are continually working to improve this.
Thermoelectric conversion has many practical applications, including power generation in spacecraft, waste heat recovery in industrial processes, and portable power generation in camping or remote locations. It can also be used in thermoelectric coolers and air conditioners.
Thermoelectric conversion does not produce any emissions or pollutants, making it a relatively clean form of energy conversion. However, the materials used in thermoelectric devices may contain toxic substances, so proper disposal and recycling methods must be implemented to prevent environmental damage.