@article{MTMT:34832873,
	title = {Economics of physics-based solar forecasting in power system day-ahead scheduling},
	url = {https://m2.mtmt.hu/api/publication/34832873},
	author = {Wang, W. and Guo, Y. and Yang, D. and Zhang, Z. and Kleissl, J. and van der Meer, D. and Yang, G. and Hong, T. and Liu, B. and Huang, N. and Mayer, Martin János},
	doi = {10.1016/j.rser.2024.114448},
	journal-iso = {RENEW SUST ENERG REV},
	journal = {RENEWABLE & SUSTAINABLE ENERGY REVIEWS},
	volume = {199},
	unique-id = {34832873},
	issn = {1364-0321},
	abstract = {A high-quality solar power forecasting system that strictly adheres to grid regulations is valuable for system operators to formulate strategies for power system scheduling. Some grid operators, therefore, enact penalty schemes for the forecasts submitted by photovoltaic (PV) plant owners, as a means to fortify truthful and high-quality forecast submissions. From the perspectives of both plant owners and grid operators, this study inquires into the quality-to-value mapping of solar forecasts in the context of power system day-ahead scheduling. A physics-based solar power forecasting method is presented, which consists of two steps. Firstly, ensemble numerical weather prediction (NWP) is summarized into point forecasts. Then irradiance is converted to power via a physical model chain. The results reveal that the two-step physics-based forecasting method has an advantage over a winning method in Global Energy Forecasting Competition 2014 in terms of several accuracy measures. Subsequently, the economics of solar forecasting is quantified through performing day-ahead scheduling on a modified IEEE 30-bus system with PV and battery storage. It is demonstrated that, by respecting the statistical theory on consistency and elicitability when extracting point forecasts from NWP ensembles, both power system operators and PV plant owners can benefit profoundly in terms of cost savings. The former sees fewer needs for reserves, while the latter is less penalized. The data and Python code used to produce the results are also provided to enhance the reproducibility of this work. © 2024 Elsevier Ltd},
	keywords = {reproducibility; POWER; Solar energy; CONSISTENCY; CONSISTENCY; Weather forecasting; Reproducibilities; Digital storage; Solar forecasting; Day-ahead scheduling; Day-ahead scheduling; physics-based; solar power forecasting; solar power forecasting; Power forecasting; Model chain; Model chain; Elicitability; Elicitability},
	year = {2024},
	eissn = {1879-0690},
	orcid-numbers = {Mayer, Martin János/0000-0001-5631-6117}
}

@misc{MTMT:34832453,
	title = {Artificial intelligence-driven performance mapping: a deep learning-based investigation of a two-phase expander in retrofitted organic Rankine cycle},
	url = {https://m2.mtmt.hu/api/publication/34832453},
	author = {Daniarta, Sindu and Kolasiński, P. and Imre, Attila and Sowa, D.},
	unique-id = {34832453},
	year = {2024},
	orcid-numbers = {Imre, Attila/0000-0003-4604-5899}
}

@article{MTMT:34832086,
	title = {Exploring performance map: theoretical analysis of subcritical and transcritical power cycles with wet and isentropic working fluids},
	url = {https://m2.mtmt.hu/api/publication/34832086},
	author = {Daniarta, Sindu and Imre, Attila and Kolasiński, Piotr},
	doi = {10.1016/j.energy.2024.131450},
	journal-iso = {ENERGY},
	journal = {ENERGY},
	volume = {299},
	unique-id = {34832086},
	issn = {0360-5442},
	year = {2024},
	eissn = {1873-6785},
	pages = {131450},
	orcid-numbers = {Imre, Attila/0000-0003-4604-5899; Kolasiński, Piotr/0000-0002-4199-0691}
}

@article{MTMT:34822038,
	title = {Performance study of parabolic trough solar collector using hybrid nanofluids under Jordanian weather conditions},
	url = {https://m2.mtmt.hu/api/publication/34822038},
	author = {Al-Oran, O. and Shaban, N.A. and Manna, R. and Ayadi, O. and A’saf, A. and Lezsovits, Ferenc},
	doi = {10.1007/s10973-024-12961-8},
	journal-iso = {J THERM ANAL CALORIM},
	journal = {JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY},
	volume = {149},
	unique-id = {34822038},
	issn = {1388-6150},
	abstract = {The aim of this experimental and modeling work is to compare the thermal efficiency of two identical parabolic trough solar collector systems under weather conditions in Amman, Jordan, using a hybrid nanofluid of MWCNTs and Y2O3 with gum Arabic surfactant, and distilled water as the heat transfer fluid (HTF). One parabolic trough collector (PTC) uses a hybrid nanofluid at four different volumetric concentrations (0.01, 0.025, 0.05, and 0.1%), while the other uses water as a HTF. To prepare the nanofluids and check their stability, the thermal efficiency of the PTC was examined for different hybrid nanofluid concentrations compared to distilled water. The results showed that the 0.1% MWCNTs and Y2O3 hybrid nanofluid had the highest thermal efficiency of 44.24%, while water had a thermal efficiency of 19.32%. In addition, increasing the concentrations resulted in an improvement in the maximum optical efficiency. The maximum efficiency of 45% was obtained using 0.1% Vol. The Solidworks model was created according to experimental setup parameters and dimensions. The simulation was conducted under steady-state operating conditions, incorporating dimensional governing equations (continuity, momentum, and energy). A uniform heat flux was applied with two primary boundary conditions: the first one was at the receiver inlet where the fluid inlet temperature and mass flow rate were specified, whereas the second one was at the receiver outlet, where the outlet pressure was equivalent to the atmospheric pressure. The obtained experimental results have been compared using the Solidwork simulation model, which was created to determine the PTC’s outlet temperature and thermal efficiency. The comparative results demonstrated remarkable precision with an average outlet temperature of 0.03% and thermal efficiency of 0.9%. © Akadémiai Kiadó, Budapest, Hungary 2024.},
	keywords = {NANOPARTICLES; Multiwalled carbon nanotubes (MWCN); Atmospheric Pressure; Heat flux; Heat Transfer; meteorology; Atmospheric temperature; Nanofluidics; Jordan; Jordan; Collector efficiency; Thermal efficiency; yttrium oxide; Hybrid nanofluid; Hybrid nanofluid; Yttrium oxide nanoparticles; Parabolic trough collector; parabolic trough solar collectors; Parabolic trough collectors; Multi-walled-carbon-nanotubes; Thermal-efficiency; Multi-walled carbon nanotubes nanoparticles (MWCNTs); Yttrium oxide nanoparticles (Y2O3); Carbon nanotube nanoparticles; Multi-walled carbon nanotube nanoparticle; Yttrium oxide nanoparticle (Y2O3)},
	year = {2024},
	eissn = {1572-8943},
	pages = {3981-3998}
}

@article{MTMT:34822026,
	title = {Detailed spray analysis of airblast atomization of various fuels in a reacting environment},
	url = {https://m2.mtmt.hu/api/publication/34822026},
	author = {Kardos, Réka and Rácz, Erika and Malý, M. and Jedelský, J. and Józsa, Viktor},
	doi = {10.1016/j.ijheatmasstransfer.2024.125548},
	journal-iso = {INT J HEAT MASS TRANS},
	journal = {INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER},
	volume = {227},
	unique-id = {34822026},
	issn = {0017-9310},
	abstract = {Understanding spray evolution in a reacting environment is critical to designing advanced, clean combustion systems. The processes in the upstream region determine flame shape, stability, ignition characteristics, pollutant emission, and combustion efficiency. The developed spray is never achieved in combustion since the early regions feature primary and secondary atomization, while droplets evaporate as they approach the flame. Consequently, there is no thermodynamic equilibrium before the flame front. The principal goal of this paper is to provide detailed information to model developers on various sprays measured by a Phase Doppler Anemometer; the processed measurement data is available as supplementary material, while the raw data will be provided upon request. Four different fuels were tested: diesel fuel, aviation kerosene type JP-8, biodiesel, and a 50 % biodiesel-diesel blend by volume. The plain-jet airblast atomizer was tested at four atomization gauge pressures (0.3, 0.45, 0.6, 0.75 barg). Therefore, sixteen different sprays were measured along one spray diameter at each of four downstream distances of 15, 25, 35, and 45 mm, measured from the nozzle tip. The paper details the droplet size distribution, droplet axial velocity, fluctuations, and correlation between size and velocity to facilitate a comprehensive understanding of liquid fuel sprays. This latter measure helps identify the overshooting phenomenon, i.e., localizing the regions where the large droplets move faster than the gas phase. © 2024 The Author(s)},
	keywords = {EVAPORATION; Drop formation; biofuel; Atomization; Diesel engines; Anemometers; Biodiesel; spray; spray; UPSTREAM REGION; Airblast atomizer; Airblast atomizer; ignition; reacting; reacting; Phase doppler anemometry; Phase doppler anemometry; Clean combustion; Combustion systems; Spray nozzles; Air blast; Flame shapes; Spray analysis},
	year = {2024},
	eissn = {1879-2189},
	orcid-numbers = {Józsa, Viktor/0000-0003-1220-3748}
}

@article{MTMT:34816686,
	title = {Magas hőmérsékletű nátrium-kén akkumulátor koncentrált paraméterű modellezése},
	url = {https://m2.mtmt.hu/api/publication/34816686},
	author = {Csemány, Dávid},
	journal-iso = {ENERGIAGAZDÁLKODÁS},
	journal = {ENERGIAGAZDÁLKODÁS},
	volume = {65},
	unique-id = {34816686},
	issn = {0021-0757},
	year = {2024},
	pages = {18-23},
	orcid-numbers = {Csemány, Dávid/0000-0002-5103-5540}
}

@article{MTMT:34816661,
	title = {Performance map and theoretical analysis of Carnot battery technology via novel reversible Rankine-based cycle},
	url = {https://m2.mtmt.hu/api/publication/34816661},
	author = {Daniarta, Sindu and Kolasiński, Piotr and Imre, Attila},
	doi = {10.1016/j.egyr.2024.04.024},
	journal-iso = {ENERGY REP},
	journal = {ENERGY REPORTS},
	volume = {11},
	unique-id = {34816661},
	issn = {2352-4847},
	year = {2024},
	eissn = {2352-4847},
	pages = {4500-4514},
	orcid-numbers = {Imre, Attila/0000-0003-4604-5899}
}

@article{MTMT:34772009,
	title = {Thermal diffusity in copper benzene-1,3,5-tricarboxylate–reduced graphite oxide mechanical composites},
	url = {https://m2.mtmt.hu/api/publication/34772009},
	author = {Gál, Márton and Samaniego Andrade, Samantha Kathiuska and Fehér, Anna Éva and Farkas, Attila and Madarász, János and Horváth, Lili and Gordon, Péter and Kovács, Róbert Sándor and Nagyné László, Krisztina},
	doi = {10.1007/s10973-024-13021-x},
	journal-iso = {J THERM ANAL CALORIM},
	journal = {JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY},
	unique-id = {34772009},
	issn = {1388-6150},
	abstract = {Metal organic frameworks (MOFs) and particularly copper benzene-1,3,5-tricarboxylate (HKUST-1) are excellent materials for gas storage (e.g., CH 4 , N 2 , H 2 adsorption) and gas separation. In this work, reduced graphene oxide (RGO)–HKUST-1 mechanical mixtures were studied in order to reveal the effect of RGO content on the pressure tolerance of the texture and heat conductivity. HKUST-1 was obtained by two different synthesis routes. Air-dried MOF and RGO were thoroughly mixed prior to the compression. Powder XRD and Raman spectroscopy were used to characterize the response of the crystal structure, while low-temperature nitrogen adsorption was used the follow the adsorption properties of the pellets. Finally, the "flash" heat pulse method was used to assess the thermal properties. The gas adsorption isotherms revealed that the adsorption capacity decreases when RGO is added. Based on Raman and XRD results, we found that the synthesis route has an effect on multiple scales. We experimentally confirmed that evaluation of the thermal diffusivity requires a model more complex than the simple Fourier equation, due to the inherent heterogeneous structure of the material. A good approximation of the Fourier coefficient of thermal diffusivity was obtained using the parameters of the Guyer–Krumhansl equation. The heat pulse experiments also revealed possible size-dependent behavior.},
	year = {2024},
	eissn = {1572-8943},
	orcid-numbers = {Fehér, Anna Éva/0000-0002-2366-6388; Farkas, Attila/0000-0002-8877-2587; Kovács, Róbert Sándor/0000-0001-5822-6035; Nagyné László, Krisztina/0000-0003-4499-3983}
}

@article{MTMT:34757577,
	title = {Two-field mixed hp-finite elements for time-dependent problems in the refined theories of thermodynamics},
	url = {https://m2.mtmt.hu/api/publication/34757577},
	author = {Tóth, Balázs and Molnár, Zsombor and Kovács, Róbert Sándor},
	doi = {10.1007/s00161-024-01300-9},
	journal-iso = {CONTINUUM MECH THERM},
	journal = {CONTINUUM MECHANICS AND THERMODYNAMICS},
	unique-id = {34757577},
	issn = {0935-1175},
	abstract = {Modern manufacturing technologies allow heterogeneous materials with complex inner structures (e.g., foams) to be easily produced. However, their utilization is not straightforward, as the classical constitutive laws are not necessarily valid. According to various experimental observations, the Guyer–Krumhansl equation is a promising candidate for modeling such complex structures. However, practical applications need a reliable and efficient algorithm capable of handling both complex geometries and advanced heat equations. In the present paper, we derive new two-field variational formulations which treat the temperature and the heat flux as independent field variables, and we develop new, advanced hp -type mixed finite element methods, which can be reliably applied. We investigate their convergence properties for various situations, challenging in relation to stability and the treatment of fast propagation speeds. That algorithm is also proved to be outstandingly efficient, providing solutions four magnitudes faster than commercial algorithms.},
	year = {2024},
	eissn = {1432-0959},
	orcid-numbers = {Tóth, Balázs/0000-0002-5419-2234; Kovács, Róbert Sándor/0000-0001-5822-6035}
}

@article{MTMT:34755651,
	title = {Thermal and mechanical properties of AlSi7Mg matrix syntactic foams reinforced by Al2O3 or SiC particles in matrix},
	url = {https://m2.mtmt.hu/api/publication/34755651},
	author = {Fehér, Anna Éva and Maróti, János Endre and Takács, Donát M. and Orbulov, Imre Norbert and Kovács, Róbert Sándor},
	doi = {10.1016/j.ijheatmasstransfer.2024.125446},
	journal-iso = {INT J HEAT MASS TRANS},
	journal = {INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER},
	volume = {226},
	unique-id = {34755651},
	issn = {0017-9310},
	year = {2024},
	eissn = {1879-2189},
	orcid-numbers = {Fehér, Anna Éva/0000-0002-2366-6388; Takács, Donát M./0000-0002-8463-745X; Orbulov, Imre Norbert/0000-0002-5358-0630; Kovács, Róbert Sándor/0000-0001-5822-6035}
}