Abstract
In recent years there has been rising interest in thermoelectric generation as a potential source of electric power using waste heat. This paper describes thermoelectric power generation from waste heat from biomass boilers, utilizing generators that can convert heat energy directly to electrical energy. General principles of thermoelectric conversion and future prospects of these applications are discussed.
Highlights
The efficiency of traditional power generating systems is not satisfactory
Not all of the waste heat is dispersed in the atmosphere without profit, but a major part of the energy buried in fossil fuels is not converted into electricity
The total energy efficiency of a conventional thermal power plant using steam turbines is approximately 40 %; the best modern combinedcycle plant using a gas turbine and a steam turbine is between 50–60 %
Summary
The efficiency of traditional power generating systems is not satisfactory. A huge amount of thermal energy is discharged into the atmosphere every day. Not all of the waste heat is dispersed in the atmosphere without profit, but a major part of the energy buried in fossil fuels is not converted into electricity. The total energy efficiency of a conventional thermal power plant using steam turbines is approximately 40 %; the best modern combinedcycle plant using a gas turbine and a steam turbine is between 50–60 %. Thermoelectric generators (TEG) have the potential to recover waste heat as effective energy and to make a major contribution to reducing fossil fuel consumption. As a consequence of lower energy consumption and higher total energy efficiency, TEG can help reduce CO2 and other greenhouse gas emissions
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