https://repository.utm.md/handle/5014/8117 6-9 Oct. 2015 2026-04-20T11:54:02Z https://repository.utm.md/handle/5014/8145 Wind power. Legislative and financial framework. Possibilities of exploitation in Republic of Moldova RABEI, Ivan; Wind energy can be converted into a usable form of energy using wind turbines to produce electricity, wind mills for producing mechanical power, wind pumps for pumping water, or sails for moving the ships. Currently, on the worldwide scale, there are wind farms consisting of hundreds of wind turbines, which are connected to an electricity grid. With existing technology for new constructions, wind energy produced on land is convenient priced compared to the energy produced from fossil sources, in some places, the energy produced by wind energy conversion systems can be even cheaper. Wind power off shore is higher, also the visual impact produced by turbines is lower, but the construction and maintenance of these turbines are more expensive than in the case of those constructed on land. Small wind farms can provide energy for remote or isolated areas that are not connected to grid. Compared to energy obtained from fossil sources, wind energy is renewable, widely available, clean, produces no emissions of greenhouse gas during conversion and uses little space. Environmental effects are generally less problematic than the ones created by other energy sources. Moldova is far behind the world's progresses regarding renewable energy and pragmatic solutions for spreading conversion technologies are needed, keeping in mind the current economical, political and social problems that the republic faces. 2015-01-01T00:00:00Z https://repository.utm.md/handle/5014/8144 Photovoltaic pumped storage sytem for small and large scale applications BUSCA-FORCOS, Andreea; MARINESCU, Corneliu The photovoltaic market has been growing at a fast rate in the last two decades, and in 2014 reached a global capacity of about 180GW. Due to the increasing penetration level, large-scale energy storage systems that can compensate for its fluctuations become increasingly important. In case of off-grid systems, suitable energy storage is naturally a necessity. In areas with favorable geographical properties, pumped storage has an excellent potential to be applied. The behavior and the performance of the PV pumped storage systems for small and large scale applications are analyzed in this paper. The stochastic character of PV energy is into account. The system is tested and validated on a RTDS (Real Time Digital Simulator) platform. 2015-01-01T00:00:00Z https://repository.utm.md/handle/5014/8143 The thermodynamic benefits of the integration of cogeneration installations in bakery ovens CHELMENCIUC, Corina The present work is motivated by the need to reduce the irreversibility of the process with combustion gas in bakery ovens, especially it was analyzed the process of the mixing of the obtained gases in the combustion chamber with the recycled gases in order to achieve the necessary temperature of the flue-gas in the oven channels. There are also exposed the arguments in favor of using gas tunnel ovens in the bakery compared with the electrical ovens. There are presented the essence and benefits of the implementation of two solutions of ovens with integrated cogeneration installation. 2015-01-01T00:00:00Z https://repository.utm.md/handle/5014/8142 Moldova’s Wind Power Potential and Levelezed Cost of Energy RACHIER, Vasile; SOBOR, Ion Three aspects concerning wind energy development in Moldova are discussed: (1) the assessment of wind power potential for the height of 100 m above ground level, using a conservative assumption of 5 MW/km2 and taking into account the main constraints, (2 ) the identification of a site in the central region of Moldova for building a 40 MW Wind Power Plant and the estimation of annual energy production, (3) levelezed cost of wind electricity assessment. 2015-01-01T00:00:00Z