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In the context of current global debates about assuring sustainability of human society renewable energy resources have started to find a main role regarding assuring needed energy supply on different levels. In the last time it has been noticed that Artificial Intelligence, AI is transforming the renewable energy sector by optimizing the usage of energy resources like wind, solar, and hydro, which are per-se not constantly available. By applying AI in connection to using renewable energy resources, improving odds...

Accurate flow measurement is an essential aspect of industrial process monitoring, laboratory experimentation, and modern energy systems. Differential pressure flowmeters, particularly orifice-based devices, remain widely used due to their simplicity, robustness, and standardized measurement principles. However, conventional manufacturing of such components typically requires precision machining, which can increase production costs and reduce flexibility during prototyping and design optimization. This study prese...

In the context of the transition to a hydrogen-based economy, the assessment of the risks associated with this energy vector is becoming a priority for industrial safety. The unique properties of hydrogen, its high reactivity and high burning rate, require the use of advanced numerical simulation tools, capable of providing highly accurate predictions of the effects of explosive phenomena. This paper presents methodological contributions aimed at optimizing the numerical models used for the analysis of explosions ...

The main aim of this paper is to present the research findings in the field of solid biofuels production from biomass. One of the recovery possibilities for waste biomass raw materials is production of solid biofuels. Using a variety combination of influencing variables can be improve the final quality of solid biofuels. Raw biomass material variables influence, especially (type of raw material, particle size, moisture content, compression pressure and compression temperature) can be recognized during the producti...

This paper presents the design and numerical analysis of an experimental system intended to study the effects of water curtains on the propagation of hydrogen explosions. The developed virtual model reproduces a test stand consisting of three successive chambers separated by two water-filled barriers acting as water curtain obstacles. The atmosphere in the chambers is composed of an explosive hydrogen–air mixture with a hydrogen concentration of 25%. The explosion is initiated in the first chamber, and the propa...

Nowadays the communication is made mainly through electronic devices. These devices produce electromagnetic radiation that influences the quality of the sent signal. Also, health problems are generated due to the time spent in an electromagnetic medium that emits radiations. This paper presents some of latest screen developments regarding electromagnetic screens, advancements in shielding materials.

Making an oxygen steel factory (Basic Oxygen Furnace - BOF) more efficient focuses on maximizing energy recovery, optimizing the oxygen blow process, reducing fossil fuel reliance, and enhancing material recycling. Modern advancements allow for significant reductions in carbon footprint and operational costs. The BOF is highly energy-efficient in terms of process heat, consuming only about 1.2 GJ per tonne of crude steel, as it relies on the exothermic oxidation of impurities in hot metal. While the overall BF-BOF...

This paper proposes an engineering framework for the integration of wind energy conversion systems on maritime vessels, with application to navigation conditions specific to the maritime sector of Danube. The study addresses the growing need for practical decarbonization solutions by exploring the technical and operational requirements for implementing small-scale wind energy technologies onboard. The framework combines system design criteria, installation constraints, and performance assessment methodologies to s...

Thermoelectricity is a green, renewable energy technology that uses the Seebeck effect to convert waste heat directly into electricity. Cobaltites have great potential for use in thermoelectric generators due to their environmental friendliness, good thermal and chemical stability, and relatively low raw-material costs. Improving the thermoelectric performance of cobaltites using suitable dopants could expand their application potential. This study investigated the effect of bismuth oxide (Bi2O3) and bismuth borat...

As is well known, hydrogen exhibits a wide flammability range, low ignition energy, and high diffusivity, which create significant explosion risks in storage and handling facilities. Therefore, the development of effective methods and devices for the detection and control of hydrogen explosions is essential to ensure operational safety. This paper presents the development and experimental validation of an explosion control device intended for hydrogen storage systems. The proposed device is based on an optical ult...