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The paper presents the technology used for extracting the energy of geothermal water that comes from a closed reservoir without decreasing the pressure of the reservoir. In order to do this, the reinjection of heat depleted geothermal water is obligatory. Therefore, beside the production well, an injection well is mandatory. Also, because of the high concentration of dissolved solids and to avoid...
The paper presents a case study, testing the Vapidro-Aste software for an existing small hydropower plant built at the bottom of a dam, and performs a comparative analysis between the current situation and the simulated one, taking into consideration the ecological flow for the protection of the aquatic ecosystems.
The goal to obtain acceptable economic features for small hydropower developments requires many thorough analyses. Thus, the river section selection, the conception of a general development scheme together with a detailed technical solution, the applied performance technology, the quality of operation tests and the structure of operation management represent the main steps that need to be carefully...
European statistics (EUROSTAT) showed that, until some years ago, Romania has been considered a country without pumped storage plants (PSPs). Currently, Romania appears to have a total capacity of 91.5 MW, installed in five pumped storage plants operated by Hidroelectrica within their hydropower developments portfolio. The paper presents the hydropower developments of PSPs type in Romania; and an...
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