Article
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Preserved in Portico This version is not peer-reviewed
Applications of Tungsten Pseudo-alloys in the Energy Sector
Version 1
: Received: 29 November 2023 / Approved: 29 November 2023 / Online: 29 November 2023 (13:47:25 CET)
A peer-reviewed article of this Preprint also exists.
Macháčková, A.; Bárta, O.; Brožová, S. Applications of Tungsten Pseudo-Alloys in the Energy Sector. Appl. Sci. 2024, 14, 647. Macháčková, A.; Bárta, O.; Brožová, S. Applications of Tungsten Pseudo-Alloys in the Energy Sector. Appl. Sci. 2024, 14, 647.
Abstract
New ways of generating energy are currently being discussed, with a transition from traditional primary sources to more environmentally friendly options, particularly renewables. Energy storage is also closely related to this transition. Battery storage currently dominates this area. However, flywheel energy storage system (FESS) technology offers an alternative that uses stored kinetic energy to be transformed into mechanical energy and, using a motor-generator, electrical energy. FESS technology is thus flexible and can be applied in different industrial applications.
The management of the technology of recycling W-MMC waste material from other products and the subsequent trial production of high-strength W-MMC material with a density of more than 17 500 kg/m3 from recycled powders allowed to test the limits of the so-called "heavy" flywheels used in rotor production. Materials with densities ≥ 7 800 kg/m3, and operating at lower to medium speeds up to 20 000 rpm.
The results achieved lead to the conclusion that the developed recycled materials of the W-MMC type with a density ≥ 17 500 kg/m3, with a yield strength of 1 200 - 1 700 MPa depending on the production method, can be used as a substitute for the structural steels used today, without an enforced reduction of the maximum allowed rotor speed due to exceeding the maximum allowed stress.
Keywords
tungsten pseudoalloys; high temperature alloys; tungsten recycling; energy storage systems
Subject
Engineering, Metallurgy and Metallurgical Engineering
Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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