The surge tank located at the upstream head of penstocks and shafts of hydropower plants is an effective measure to protect the headrace tunnels against high pressure fluctuations. It reflects the transient pressure waves that are generated by the variation of the flow discharge inside the powerhouse. The upand down-surges inside the tank, as well as, the percentage of the transmitted pressure ...

There are presently four driver technologies that are being developed for IFE Power Plants: these are HIF (Heavy Ion Fusion), KrF (Krypton Fluoride laser), DPSSL (Diode-Pumped Solid-State Laser), and Z-Pinches. All four types were included in the discussions at the Snowmass Fusion Summer Study in 1999 [1]. The purpose of this paper is to discuss (1) the z-pinch power plant concept, and (2) the ...

Abstract In pump turbines, the observation in engineering field shows that pressure fluctuation has become one of most serious hydraulic instability phenomena. The pulsation will cause vibration and fatigue failure unit, even plant, which greatly affects safe operation power station. this paper, research on by domestic foreign researchers is introduced discussed. It includes characteristics var...

With the rapid development of pumped storage, vibration problems caused by operation power stations have become increasingly prominent. In this paper, a large-scale pumped-storage station is taken as research object, and three-dimensional refined finite element model underground powerhouse including surrounding rock mass established. Based on analysis source water diversion pipeline, modal dyna...

The study reviews the most relevant renewable energy sources, focusing on their possible application, economic aspects and potential for Hungary. Feasibility analysis is made plant-sized photovoltaic devices, wind turbines, geothermal power plants biomass plants. It was found that solar cell technology has highest revenue. However, its further spread limited by several factors, such as reactive...