Faculty of Mechanical Engineering
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Item type:Publication, Toward a Sustainable Energy Future: Scenario-Based Analysis for North Macedonia(2025-08-25); In this paper, three alternative scenarios are examined and presented for the possibilities of North Macedonia’s transitioning energy sector toward renewable energy sources. Various combinations of photovoltaics, wind turbines, cogeneration plants, and hydropower plants are taken into consideration for analysing the technical, and environmental aspects. The results represent a comparison of CO₂ emissions, stability of the power grid, and energy imports and exports. According to the represented results, the scenarios with a dominant share of photovoltaics significantly reduce CO₂ emissions, while scenarios with increased involvement of wind turbines have a significant impact on export potential. Hydropower is a crucial factor for energy flexibility and stability. Also, cogeneration plants have an important role in grid balancing and import dependency reduction. The results indicate that the proper investments distribution is essential for a sustainable energy transition. Čebren, as a future planned project provide a baseline for better optimization of the energy system. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, ETHICAL DILEMMAS OF RENEWABLE ENERGY(University Ss. Cyril and Methodius in Skopje, 2022-12); ; ; Manev, NikolaThe world economic growth leads to increased energy needs that have to be satisfied with higher electricity production from both conventional and renewable energy sources. Due to the reduced fossil fuel stocks as well as environmental pollution caused by conventional power plants priority is given to the expansion of renewable energy sources. Motivated by the need to study the competitiveness, eco-friendliness and reliability of renewable en-ergy, research was conducted on the effect different energy types have on the environment, population, and economy. The aim of this paper is to analyze the ethical dilemmas of renewable energy as constraints for increasing the renewable energy share in the electricity generation and replacement of fossil fuels, considering the production process intensive-ness, noble materials depletion, and climate change caused. The extensive analysis showed that although renewable energy is in principle clean and inexhaustible energy source, it can cause burdens on nature and society. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, INTEGRATION OF LARGE‐SCALE HEAT PUMPS IN THE DISTRICT HEATING SYSTEM OF SKOPJE(University of Banja Luka, Faculty of Mechanical Engineering, 2021-05); ; ; Monika Uler-ZefikjIn the residential sector in EU countries space heating and domestic hot water system participate with more the 80% in the final energy consumption. Cost‐effective and energy efficient option for residential and commercial buildings is DHC which is currently dominated by fossil fuels, such as coal and gas. Upgrading existing systems with integrating renewable technologies can lead to significant benefits regarding climate change mitigation, energy security and human health. The main aim of this paper is analyzing the possibilities for integrating heat pump together with thermal storage in the district heating system in Skopje, R. North Macedonia, considering current network system, growing population, climate conditions and pollution issue. Different scenarios will be analyzed by changing the COP of the heat pump in order to get an overview of the most feasible option taking into consideration the heat production, electricity consumption and payback period. The energy model is developed and analyzed for the part operated by Balkan Energy Group. It tends to provide insight of the benefits provided by the system upgrade and cost analysis for installation, operation and maintenance of the equipment. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Exploring the Potential of Biomass Pyrolysis for Renewable and Sustainable Energy Production: A Comparative Study of Corn Cob, Vine Rod, and Sunflower(Sustainability, MDPI, 2023-09-11)