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Combined Renewable Energy Resources System Geothermal

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Combined Renewable Energy Resources System Geothermal ( combined-renewable-energy-resources-system-geothermal )

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Energies 2022, 15, 6398 2 of 23 of RES utilization, thus minimizing the effects of climate change. The course of action presented in this paper includes universal criteria for all such projects and, in particular, includes the presentation of a comprehensive and coherent description of the system, together with the needs addressed. The paper includes a presentation of the results of the necessary technical and technological analyses for the implementation of a combined RES system. The economic basis for the implementation of the proposed system is, in the opinion of the authors, strongly case-specific and, thus, cannot provide a model for direct implementation in other similar facilities. Therefore, they were not included in the analysis. Such a comprehensive approach to the proposed RES system ensures that it can be verified at the early stages of planning and preparation for implementation, which increases the chance of successful implementation. Due to concerns for the broader natural environment, the role of renewable energy sources (RES) is more and more significant in the world today. Such solutions are considered the most environmentally friendly installation solution for electricity generation. The requirement of a percentage share of energy production from renewable sources has been ratified in many legal regulations, including those for the European Union member states [1–4]. Thus, their pro-ecological stance has been confirmed by law. The coal, oil, or gas resources in these countries are limited and the process of energy generation in conventional power plants is currently related to the emission of many pollutants into the environment. For these reasons, technologies are currently being strongly promoted that enable obtaining energy from RES, a so-called “clean energy”. Unfortunately, the conventional, “one-way” use of the selected sole resource (e.g., water, wind, geothermal) is insufficient. The progress made in the field of RES, as well as the possibilities for protecting the environment from the hazards connected with fossil fuel utilization, are now widely discussed [5]. There are many conference activities, scientific articles, and project descriptions from all around the world that are focused on human priorities, such as the progress made/possible in harnessing renewable energy sources to stop climate change. The methods presented in the various conferences, e.g., the International Conference on Sustainable Energy and Environmental Protection, SEEP 2018 [5], are focused, among other topics, on the development of efficient energy conversion systems with low/no environmental impacts. Many projects show the path toward optimizing RES use and to stop/minimize climate change. Sarma and Zabaniotou [6] proposed various courses of action for a more sustainable and resilient renewable energy sector, based on climate change, the potential biological hazards, and human wellbeing. Kaczmarczyk et al. [7] presented the concept of managing low-enthalpy geothermal waters for the purpose of electricity generation in the first stage of the cascade. Thermodynamic calculations were conducted, assuming the use of the organic Rankine cycle (ORC) or Kalina cycle in two variants. The results indicate that the gross capacity in the most optimistic variant will not exceed 250 kW for the ORC and 440 kW for the Kalina cycle [7]. There is a huge area available in which to implement RES technologies, e.g., in Nepal, where roughly 70% of energy consumption is generated from traditional energy sources, while renewable energy accounts for approximately three percent of its energy [8]. Sowiz ̇dz ̇ałetal.[9]analyzedwhetherRESusecouldalsoimprovelivingconditions.Despite a large number of similar projects, access to renewable electricity is still limited in many countries, such as Algeria (with 0% of national electricity generation from RES), Iran (7%) or Egypt (9%) [10]. In the literature, there are many papers titled “combined renewable energy resources” but, in fact, most of them refer to the utilization of water with the supplement of wind and solar energy projects for the proper and efficient management of water resources, e.g., in Tajikistan [11]. Here, there are numerous additional objections against hydropower plants—there is a conflict between the downstream country (Uzbekistan), which mostly utilizes water for irrigation, and the upstream country (Tajikistan), which uses water mainly for the generation of electric power. Bagherian and Mehranzamir [12] reviewed the energy generation of renewable resources, including solar, wind, and geothermal energy sources, until 2020. This article attempts primarily to elaborate on the integration of single renewable energies in combined heat and power systems. Multiple renewable energies

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