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Des générateurs thermomagnétiques pour convertir les faibles écarts de température en électricité techniques-ingenieur.fr - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from techniques-ingenieur.fr Daily Mail and Mail on Sunday newspapers.
E-Mail Credit: Photo: IMT/KIT Use of waste heat contributes largely to sustainable energy supply. Scientists of Karlsruhe Institute of Technology (KIT) and T?hoku University in Japan have now come much closer to their goal of converting waste heat into electrical power at small temperature differences. As reported in Joule, electrical power per footprint of thermomagnetic generators based on Heusler alloy films has been increased by a factor of 3.4. (DOI: 10.1016/j.joule.2020.10.019) Many technical processes only use part of the energy consumed. The remaining fraction leaves the system in the form of waste heat. Frequently, this heat is released into the environment unused. However, it can also be used for heat supply or power generation. The higher the temperature of the waste heat is, the easier and cheaper is its reuse. Thermoelectric generators can use waste heat of low temperature for direct conversion into electrical power. Thermoelectric materials used so ....