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Voters in the Kerkhoven-Murdock-Sunburg School District go to the polls on Nov. 7 to decide a two-question bond totaling $27.9 million for improvements.
Climate change is associated with increasingly frequent droughts. This increases the risk of forest fires. On a walk through the forest, forest scientist Dr. Somidh Saha from KIT advocates more research and courage to experiment.
Most west central Minnesota schools plan to recommend, not require, masks to begin the school year wctrib.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from wctrib.com Daily Mail and Mail on Sunday newspapers.
Renewable energies: No wind turbine disturbing the scenery eurekalert.org - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from eurekalert.org Daily Mail and Mail on Sunday newspapers.
Credit: Markus Breig/Amadeus Bramsiepe, KIT Low-temperature heat in the form of waste heat from industry or geothermal power plants offers big potential for sustainable and need-tailored power supply. The Modular Low-temperature Cycle Karlsruhe (MoNiKa), the only research facility of this kind in Europe, has now started operation at Karlsruhe Institute of Technology (KIT). Work is aimed at enhancing efficiency and environmental compatibility of the conversion of excessive heat into electric power by means of the organic Rankine cycle (ORC). In the past years, low-temperature heat gained importance for efficient electricity generation with low CO2 emissions. "Instead of releasing excessive heat into the environment, it makes more sense to use it and to produce electricity from it," says Dr. Dietmar Kuhn, Head of the Energy and Process Engineering Group of KIT's Institute for Thermal Energy Technology and Safety (ITES). So-called ORC facilities are used to convert heat with a temperature below 200°C into electricity for private households. These facilities are based on the organic Rankine cycle, a process named after the British founder of thermodynamics, William John Macquorn Rankine, and mainly used in geothermal power plants.
E-Mail IMAGE: Solar modules without (left) and with (right; visualized) Phytonics film. The film almost completely suppresses reflection for all wavelengths and angles of incidence of light. view more Credit: Photos by Andrea Fabry; Editing by Phytonics The high-tech company Phytonics, a spinoff from the Karlsruhe Institute of Technology (KIT), gets inspired by plants: The Phytonics film with micro- and nanostructures modeled on rose petals provides an anti-reflective coating for all kinds of surfaces, makes solar modules up to ten percent more efficient, and gives many objects a noble velvety appearance. At the Hannover Messe 2021 from April 12 to 16, the innovation will be showcased at KIT's virtual booth "Future Hub."
Hundreds of west central Minnesota school employees have been vaccinated in the past month School districts in the area have had students in their buildings most of the school year, and many employees have been vaccinated in the past month. School leaders say the vaccine has eased people's minds and should help keep kids in schools. 5:11 pm, Mar. 5, 2021 × The Kandiyohi County Public Health Department administered 300 doses of the Moderna COVID-19 vaccine to individuals 65 and older during a recent clinic. Carolyn Lange / West Central Tribune Hundreds of school employees in west central Minnesota have received their COVID-19 vaccines in the past month.
E-Mail IMAGE: Better understanding of the lifecycle accelerates the development of long-lasting, recyclable, and safe lithium-ion batteries. view more Credit: (Photo: Laila Tkotz, KIT) Recycling and optimized resource cycles, second use, and knowledge-based cell design are expected to enhance sustainability and safety of lithium-ion batteries in future. The basis is now provided by process engineers and materials scientists of Karlsruhe Institute of Technology (KIT), who jointly study the battery lifecycle. The new research projects are carried out within the battery research clusters "greenBatt" and "BattNutzung" funded by the Federal Ministry of Education and Research (BMBF). Battery cells of constant high performance can considerably reduce the ecological footprint of applications, such as electric mobility. In addition, second use of such cells is considered, e.g. in large networks of storage systems. But not all cells are suited for such "second-life scenarios." Long-term operation requires perfect interaction of a number of components and materials. "Permanent charging and discharging of the battery is inevitably associated with undesired side reactions," says Professor Hans-Jürgen Seifert from the Applied Materials Physics Department of KIT's Institute for Applied Materials. "When this has an adverse effect on the battery's behavior, it is referred to as degradation or aging. Degradation cannot be prevented completely, but it can be delayed and mitigated by an adequate cell design." Seifert and his team analyze degradation mechanisms in the highly reactive electrolyte by the associated gas formation. They carry out highly precise calorimetric measurements to balance heat quantities during battery operation and model them thermodynamically. The project is aimed at precisely predicting the cell behavior during use, Seifert explains: "With our models, safe and sustainable batteries can be developed in a knowledge-based manner and quick commercialization will be possible."
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 far, however, have been expensive and sometimes even toxic. Moreover, thermoelectric generators require large temperature differences for reaching efficiencies of just a few percent.
E-Mail IMAGE: The KIT-developed data recorder uses a GPS receiver and records raw and frequency data with very high resolution. (Photo: Amadeus Bramsiepe, KIT) view more Credit: Amadeus Bramsiepe, KIT In the renewable energies era, grid frequency will be an increasingly important indicator of stability of power supply. Under the direction of the Helmholtz Association, an interdisciplinary research consortium has analyzed frequency fluctuations in twelve synchronous grid areas on three continents. For data recording, scientists of Karlsruhe Institute of Technology (KIT) have developed a portable, GPS-synchronized recorder based on a new measurement technology. First results have now been published in