Volume-10, Issue-10, October 2024

Abstract

Rapid urbanization and industrialization cause not only the reduction of agriculturally usable areas, but also a certain degree of modification of traditional cultivation practices. Cultivation of plants with the use of new technologies, characterized by the absence of land use, is experiencing significant development in areas of unconventional agriculture, primarily in areas with a lack of land or unsuitable soil quality. The article discusses the design of an island system for local year-round production of seasonal food using an alternative source of energy. The output is the design of your own hydroponic system with automatic control.

Keywords: Hydroponics, Plants, Island System.

References

Keywords: Hydroponics, Plants, Island System.

Abstract

Due to the current development of the state of fossil resources, efforts are being made to replace extractable energy sources with renewable sources that would have less impact on the environment during the production, transport and consumption processes. Hydrogen is a promising universal energy carrier that could gradually replace the currently used fossil fuels to a large extent. The article discusses the problem of mixing hydrogen into natural gas using simulation in the ANSYS CFX program into the proposed distribution network, as well as its behaviour in a mixture with natural gas in the case of reduced consumption by the consumer, or during downtime or repairs, when the flow in the intake pipe is reduced or completely stopped.

Keywords: ANSYS CFX, hydrogen, natural gas.

References

Keywords: ANSYS CFX, hydrogen, natural gas.

Abstract

In response to the deficiencies of the Crayfish Optimization Algorithm (COA), such as slow convergence speed and susceptibility to local optima when solving complex optimization problems, an improved Crayfish Optimization Algorithm (ICOA) with a hybrid strategy is proposed. This improvement incorporates five strategies: an enhanced position update function for followers from the Sparrow Algorithm, a refined spiral position update function from the Whale Optimization Algorithm, modifications to the criteria and methods for assessing food size, the golden ratio coefficient, and an information accumulation function. Optimization tests conducted on 12 benchmark functions demonstrate that the improved algorithm shows enhancements in both convergence speed and optimization performance. Finally, experiments applying the improved optimization algorithm to engineering application problems further validate the superiority of the enhanced Crayfish Optimization Algorithm.

Keywords: Classical test functions, COA, Engineering Constraint Problems, Information Accumulation.

References

Keywords: Classical test functions, COA, Engineering Constraint Problems, Information Accumulation.

Abstract

The article examines the Archimedes wind turbine model with a diameter of 1,500 mm in terms of the strength of its construction. It describes in detail the material properties of the turbine produced by means of alternative methods, specifically by means of the Selective Laser Sintering additive technology. By combining CFD simulation and strength analysis, the article solves the influence of the pressure force of the wind and the speed of the turbine on the tension and deformations in its construction. The results are compared with commercially available turbines made of composite materials.

Keywords: Wind Energy, Wind Turbine, Strength Analysis, Computational Fluid Dynamics.

References

Keywords: Wind Energy, Wind Turbine, Strength Analysis, Computational Fluid Dynamics.

Abstract

Requirements for increasing the environmental friendliness of electricity and heat production to reduce the emission footprint are increasing the demands on the used fuels. For the replacement of conventional fuels in the process of combined production of electricity and heat, it is possible to use synthetic gases, which are created during processes of thermal recovery of biomass and waste. The presented article discusses the possibilities of using synthesis gas obtained by thermal recovery of waste in a plasma reactor in cogeneration units. For the experiment, different ratios of mixtures of natural gas and synthesis gas were used to reduce the consumption of fossil fuel without significantly reducing the performance of the cogeneration unit. The primary combustibles in the synthesis gas were hydrogen and carbon monoxide, the calorific value of which differs from that of methane, causing changes in fuel consumption to maintain the required unit performance. For the full possibility of using synthesis gas as a replacement in cogeneration units, further research is necessary both in the field of its use in combustion engines and in the field of its acquisition and primary purification.

Keywords: Hydrogen, Cogeneration Unit, Syngas, Renewable Fuels.

References

Keywords: Hydrogen, Cogeneration Unit, Syngas, Renewable Fuels.

Abstract

The series of articles (Analysis of the selected types of waste treatment by plasma technology. Part I., Part II.) discusses the processing of selected three types of waste using plasma technology. In this first part, the technology of plasma gasification and melting, is presented, as well as the processed types of waste. It involves the disposal of solid waste such as ash from municipal waste, silicone rubber and asbestos-cement material.

Keywords: Thermal Treatment of Waste, Ash from Municipal Waste, Silicone Rubber and Asbestos-Cement Material, Plasma Technology.

References

Keywords: Thermal Treatment of Waste, Ash from Municipal Waste, Silicone Rubber and Asbestos-Cement Material, Plasma Technology.