@article{MTMT:34511602, title = {A nukleárisüzemanyag-ellátás diverzifikációjának kérdései}, url = {https://m2.mtmt.hu/api/publication/34511602}, author = {Aszódi, Attila and Biró, Bence}, journal-iso = {MAGYAR ENERGETIKA}, journal = {MAGYAR ENERGETIKA}, volume = {30}, unique-id = {34511602}, issn = {1216-8599}, year = {2024}, pages = {29-35} } @article{MTMT:34802224, title = {Investigating the role of nuclear power and battery storage in Hungary’s energy transition using hourly resolution electricity market simulations}, url = {https://m2.mtmt.hu/api/publication/34802224}, author = {Biró, Bence and Aszódi, Attila}, doi = {10.1016/j.heliyon.2024.e29841}, journal-iso = {HELIYON}, journal = {HELIYON}, volume = {10}, unique-id = {34802224}, year = {2024}, eissn = {2405-8440}, orcid-numbers = {Biró, Bence/0000-0002-7264-9293; Aszódi, Attila/0000-0002-4618-1076} } @inproceedings{MTMT:35294267, title = {Engineering the energy supply for a Martian colony}, url = {https://m2.mtmt.hu/api/publication/35294267}, author = {Imre, Eszter Anna and Biró, Bence and Aszódi, Attila}, booktitle = {2024 9th International Youth Conference on Energy (IYCE)}, doi = {10.1109/IYCE60333.2024.10634951}, unique-id = {35294267}, abstract = {Mars exploration has a history of more than half a century and has been the subject of numerous expeditions over the past nearly 70 years. Much of this exploration has been motivated by the idea of colonizing the planet. Providing energy to a Martian colony is a challenging task due to the challenging conditions and the need for special equipment. There are a number of options for supplying energy to a colony, with nuclear, solar, geothermal and wind all being explored. Solar and nuclear energy have the greatest potential, and our research is looking at how these energy sources could power the colony.In our research, we calculated the energy use of a potential Martian colony and combined these to assess the potential for generating the demand we estimated. We have calculated the oxygen demand and its production, and we have investigated the theoretical possibility of a new process for waste management to produce recycled acrylonitrile butadiene styrene for 3D printing. We have also calculated the gamma irradiation dose of Martian samples and the energy requirements of the equipment needed to produce it, the extraction of water and its application in agriculture. We also evaluated the potential of nuclear reactors and solar energy. Our calculations provide a good basis for a full simulation of the energy system of a Martian colony. © 2024 IEEE.}, keywords = {Mars; Mars; IRRADIATION; ENERGY; Gamma Rays; POWER; Energy supplies; SPACE; SPACE; effluent treatment; Geothermal energy; Space research; Energy source; Mars exploration; Martian surface analysis; condition; Energy supply; small modular reactors; small modular reactors; extraterrestrial colony; Small nuclear reactors; Extraterrestrial colony}, year = {2024} } @article{MTMT:34568144, title = {PIV measurements for VVER pressurized water reactor rod bundle geometries including spacer grids for CFD model validations}, url = {https://m2.mtmt.hu/api/publication/34568144}, author = {Orosz, Gergely Imre and Kacz, Dániel and Magyar, Boglárka and Aszódi, Attila}, doi = {10.1016/j.nucengdes.2024.112938}, journal-iso = {NUCL ENG DES}, journal = {NUCLEAR ENGINEERING AND DESIGN}, volume = {419}, unique-id = {34568144}, issn = {0029-5493}, abstract = {A PIV (Particle Image Velocimetry) test facility called PIROUETTE (PIv ROd bUndlE Test faciliTy at bmE) has been built at BME (Budapest University of Technology and Economics) NTI (Institute of Nuclear Techniques). The facility is capable of investigating of flow processes under isothermal conditions with different type triangular lattice seven-rod bundles. The currently investigated rod bundle is featuring spacer grids and hydraulic conditions related to the VVER-1000 and VVER-1200 fuel assemblies. This small bundle of 7 rods is a geometrically accurate representation of a piece of the real reactor's fuel bundle, including the spacer grids. These spacer grids were 3D printed from a special type of plastic for the PIV experiments in order to reproduce the real geometry inside the assemblies as accurately as possible. The effect of the spacer grids with vanes (which are located on the spacer grid belt section) was investigated using different test grid configurations. The measurements aimed to capture high resolution flow fields inside the rod bundle with MIR (Matching Index of Refraction), in order to enable the flow measurements even within the bundle, where usually the flow field is not visible. For this purpose, the geometry was manufactured using special transparent materials. The detailed, high resolution experimental data could be used for CFD (Computational Fluid Dynamics) benchmarking and code validation, and therefore can serve the further safe and reliable operation of these reactors. The results include velocity field, velocity standard deviations (RMS), Reynolds stress and turbulent kinetic energy distributions extracted from the measured data. The attachments include the 3D model of the experimental geometry, measured velocity distributions and other parameters along various monitor lines. © 2024 The Author(s)}, keywords = {KINETICS; IMAGE VELOCIMETRY; GEOMETRY; Refractive index; Reynolds number; Kinetic energy; Computational fluid dynamics; flow visualization; Pressurized water reactors; Velocity measurement; particle image velocimetry; particle image velocimetry; Flow fields; Velocity distribution; Test facilities; 3D printing; Fuel assembly; Fuel assembly; Velocimeters; index of refraction; Matching index; CFD modell validation; Matching index of refraction; PIROUETTE system; VVER-1200 reactor; Computational fluid dynamic modell validation; Matching index of refraction; Particle images; PIROUETTE system; VVER-1200 reactor}, year = {2024}, eissn = {1872-759X}, orcid-numbers = {Kacz, Dániel/0000-0002-6217-0481} } @techreport{MTMT:34865770, title = {RELAP5, TRACE and APROS Model Benchmark for the IAEA SPE-2 Experiment}, url = {https://m2.mtmt.hu/api/publication/34865770}, author = {Orosz, Róbert and Varju, Tamás and Aranyosy, Ádám and Holl, Viktor and Hajas, Tamás Zoltán and Aszódi, Attila}, unique-id = {34865770}, year = {2024}, orcid-numbers = {Varju, Tamás/0000-0002-2969-1867} } @article{MTMT:34580095, title = {Review of solutions developed for improving maneuvering flexibility in German, French and Russian PWRs targeting to explore future possibilities for the new VVER-1200 nuclear power plant units in Hungary}, url = {https://m2.mtmt.hu/api/publication/34580095}, author = {Szondy, Borbála Nóra and Bodnár, Balázs and Grossetête, Alain and Gain, Thibaut and Aszódi, Attila}, doi = {10.1016/j.nucengdes.2024.112965}, journal-iso = {NUCL ENG DES}, journal = {NUCLEAR ENGINEERING AND DESIGN}, volume = {419}, unique-id = {34580095}, issn = {0029-5493}, year = {2024}, eissn = {1872-759X}, orcid-numbers = {Szondy, Borbála Nóra/0009-0002-0458-8000} } @article{MTMT:34890709, title = {Analysis of a PSB-VVER small break LOCA experiment with APROS and TRACE system codes}, url = {https://m2.mtmt.hu/api/publication/34890709}, author = {Varju, Tamás and Orosz, Róbert and Kardos, Boldizsár and Biró, Bence and Aszódi, Attila}, doi = {10.1016/j.anucene.2024.110662}, journal-iso = {ANN NUCL ENERGY}, journal = {ANNALS OF NUCLEAR ENERGY}, volume = {206}, unique-id = {34890709}, issn = {0306-4549}, year = {2024}, eissn = {1873-2100}, orcid-numbers = {Varju, Tamás/0000-0002-2969-1867} } @article{MTMT:34226198, title = {The effect of the future of nuclear energy on the decarbonization pathways and continuous supply of electricity in the European Union}, url = {https://m2.mtmt.hu/api/publication/34226198}, author = {Aszódi, Attila and Biró, Bence and Adorján, László and Dobos, Ádám Csaba and Illés, Gergely and Tóth, Norbert Krisztián and Zagyi, Dávid and Zsiborás, Zalán Tas}, doi = {10.1016/j.nucengdes.2023.112688}, journal-iso = {NUCL ENG DES}, journal = {NUCLEAR ENGINEERING AND DESIGN}, volume = {415}, unique-id = {34226198}, issn = {0029-5493}, year = {2023}, eissn = {1872-759X} } @inproceedings{MTMT:34104467, title = {Investigating the cooperation between nuclear power plants and renewable energy sources in Central Europe using high-resolution simulations}, url = {https://m2.mtmt.hu/api/publication/34104467}, author = {Biró, Bence and Aszódi, Attila}, booktitle = {European Nuclear Young Generation Forum 2023: Book of proceedings}, unique-id = {34104467}, year = {2023}, pages = {21-25} } @article{MTMT:33638869, title = {Probabilistic modeling of future electricity systems with high renewable energy penetration using machine learning}, url = {https://m2.mtmt.hu/api/publication/33638869}, author = {Mayer, Martin János and Biró, Bence and Szücs, Botond and Aszódi, Attila}, doi = {10.1016/j.apenergy.2023.120801}, journal-iso = {APPL ENERG}, journal = {APPLIED ENERGY}, volume = {336}, unique-id = {33638869}, issn = {0306-2619}, abstract = {The increasing penetration of weather-dependent renewable energy generation calls for high-resolution modeling of the possible future energy mixes to support the energy strategy and policy decisions. Simulations relying on the data of only a few years, however, are not only unreliable but also unable to quantify the uncertainty resulting from the year-to-year variability of the weather conditions. This paper presents a new method based on artificial neural networks that map the relationship between the weather data from atmospheric reanalysis and the photovoltaic and wind power generation and the electric load. The regression models are trained based on the data of the last 3 to 6 years, and then they are used to generate synthetic hourly renewable power production and load profiles for 42 years as an ensemble representation of possible outcomes in the future. The modeled profiles are post-processed by a novel variance-correction method that ensures the statistical similarity of the modeled and real data and thus the reliability of the simulation based on these profiles. The probabilistic modeling enabled by the proposed approach is demonstrated in two practical applications for the Hungarian electricity system. First, the so-called Dunkelflaute (dark doldrum) events, are analyzed and categorized. The results reveal that Dunkelflaute events most frequently happen on summer nights, and their typical duration is less than 12 h, even though events ranging through multiple days are also possible. Second, the renewable energy supply is modeled for different photovoltaic and wind turbine installed capacities. Based on our calculations, the share of the annual power consumption that weather-dependent renewable generation can directly cover is up to 60% in Hungary, even with very high installed capacities and overproduction, and higher carbon-free electricity share targets can only be achieved with an energy mix containing nuclear power and renewable sources. The proposed method can easily be extended to other countries and used in more detailed electricity market simulations in the future.}, year = {2023}, eissn = {1872-9118}, orcid-numbers = {Mayer, Martin János/0000-0001-5631-6117} }