We have talked more times about thermoelectric effects in this blog. As you know, we have a great experience on Peltier effect and we have developed two HVAC prototypes based on Peltier cells. Today, we would like to talk about another thermoelectric effect. Seebeck’s effect can be known as the ‘contrary’ effect to Peltier’s one. That means, we can generate electricity thanks to the temperature difference between the two faces of a cell. Let’s see how has been developed this great proposal by researchers from the Public University of Navarra.
Seebeck effect. Generating electricity from waste heat
Being able to make use of waste heat to produce electricity is just amazing. Instead of throwing away the heat generated in combustion processes, we can use it as a great resource to generate electricity. We could even think about this development as a renewable energy type.
Regarding the study case developed by the Institute of Smart Cities of the Public University of Navarra, researchers have been able to produce 21.56W with just 0.25 square meters. That means, approximately, 100W/m2. The prototype is located at the exhaust of a combustion chamber and it is provided with 48 thermoelectric modules and two different kinds of heat exchangers, finned heat sinks and heat pipes. Globally, the 40% of the primary energy used is thrown to the ambient as waste heat.
The design, experimentation phase and results of this study case have been published in an article available at Applied Energy. We highly recommend you to visit it and take a look at this outstanding experiment.
Source: Applied Energy