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This paper presents a model for super-rapid charging stations powered by renewable energy sources and conducts an analysis of land suitability based on climatic parameters. Initially, data on temperature, solar radiation, and specific humidity were collected for three designated areas, followed by an examination of the variations in these values. Among the three cities, Cernavoda, Medgidia, and Ovidiu, two equal segments of approximately 30 kilometers each were established for the installation of photovoltaic panel systems on both sides of navigable canals. With each segment measuring 30 kilometers in length, a linear area of 60 kilometers was covered on both sides, resulting in approximately 767 photovoltaic panels per kilometer and an installed power of 514 kW per kilometer. The total installed power for the entire 60 kilometers is approximately 30.84 MW, necessitating the division of the network into 1028 kW segments, each with a 1250 kVA transformer with a voltage of 20/0.4 kV. Fifteen transformer substations must be installed on each side of the canal, totaling 30 substations for the entire stretch. The energy produced by this system is utilized for three electric vehicle charging stations, positioned every 15 kilometers on each side of the canal, resulting in six charging stations per segment. Excess energy is injected into the national electrical grid (SEN) via 20/110 kV substations. To achieve optimal efficiency, a 2x25 MVA substation is supplied by 15 transformer substations, one for each side of the canal. The electric vehicle charging stations are of the super-rapid type, with a capacity of 2x175 kW. Initially, these stations exclusively rely on photovoltaic panels for approximately six hours each day, but energy storage batteries can be installed to ensure continuous operation, even during the evening hours. Comparing the analysis of the two segments, it is observed that there are slight differences. In the second segment, closer to the Black Sea with higher specific humidity, there is a slightly higher annual energy production of 390 kWh compared to the first segment, despite similar solar radiation values. Notably, this analysis reveals that specific humidity as a climatic parameter does not significantly influence the efficiency of photovoltaic panels compared to the other two parameters. Through this project, the aim is to reduce pollutant emissions from vehicles on public roads while simultaneously decreasing carbon emissions by replacing conventional electricity generation plants. [ABSTRACT FROM AUTHOR]

Nowadays, any modern water supply system needs to be more efficient, more reliable and less expensive to achieve its main goal, to supply water in a high quality services for the end users. Many researchers, engineers, designers, scientist and decision makers activating in this domain are continuously trying to improve the services provided and to increase their financial efficiency. This paper presents the results in the researches done in order to improve the use of water as a natural source in order to maximize the efficiency in a multi-objective approach. It is known that the water supply system of population is designed based on many principals that are taking into consideration the location of the source, the configuration of the consumers, the economical speed of water, etc. Depending on the location of the water source used for the supply systems we can classify the system as gravitational supply system or pumped supply systems. A study on an existing middle sized city gravitational water supply system is completed in order to analyze the opportunity to maximize the use of water according to the multiobjective purposes. When a gravitational water supply system is available, certain advantages arise from this configuration like reduced cost for water capture, transport and distribution. [ABSTRACT FROM AUTHOR]

The support mechanism for electricity generation from renewable energy sources was set up for the development of its consumption. Producers got an opportunity to get rights to sell the electricity generated from renewable energy sources within the frame of compulsory purchase. Public sellers were obliged to buy the fixed amount of generated electricity and to determine the higher purchase price for cogeneration stations. The support mechanism for electricity generation by using renewable energy sources was created to achieve the common targets of Latvian State and EU. According to National Renewable Energy Action Plan the consumption of electricity produced from renewable energy sources will increase from 3030 GWh in 2005 to 5191 GWh in 2020, thus extending by 42%, if the targets and indicative interim targets will be attained. The share of electricity generated from renewable energy sources in the general consumption was 49,9% in 2009, then it dropped to 48,5% in 2010. The share was falling while electricity consumption was rising from 7223 GWh in 2009 to 7500 GWh in 2010. The research assesses the efficiency of support mechanism by estimating the problems of its application, control and analyzing the Feed-In Tariff scheme. The paper contains the conclusions on the problems of the support mechanism for electricity generation by using renewable energy sources, its legal regulation drawbacks. The research proposes solutions for improving the support mechanism and its efficiency. [ABSTRACT FROM AUTHOR]

The amount of socio-economic factors affecting the production and consumption of fossil fuels, including continued growth oil and gas prices well in today represent a real threat. One of the options is available biomass, because it takes time restoring one or more years. This post is just focused on the creation and presentation of maps of potential biomass production, taking into account a number of relevant factors. The aim of this paper is to show the possibility of finding suitable sites for biomass production in the Košice region by promoting the use of geographic information systems. Search process itself is subject to the criteria established for each of the above suitable crops for biomass production. Multi Criteria Analysis as a method of qualitative assessment, resulting in a total state assessment and comparison of variants, is one of the choices of suitable sites for biomass production. It is therefore necessary to design its own admission factors affecting problems, modify them, evaluate them and assign weights of importance, and to analyze their hierarchical level. Multicriteria analysis allows users to consider all possible relevant conditions that may ultimately affect the resulting situation. Implementation of the multi-criteria analysis in GIS environment enables effective identification and selection of potential sites for production of energy plants. As the EU legal framework determines the results as much as possible the use of renewable energy, through the application of GIS analyzes can reach a spatial localization and documentation of potential areas for biomass production. [ABSTRACT FROM AUTHOR]