Surge tank geometry modification for power increase
نویسنده
چکیده
منابع مشابه
Analysis and Design of a Simple Surge Tank (RESEARCH NOTE)
In a hydroelectric power plant or in a pumping station in order to avoid sudden large increase of pressure due to instantaneous valve closure sometimes a surge tank is installed. The height of surge tank is designed by the highest possible water level during the operation. The theoretical treatment of oscillation in a surge tank is difficult because of the non-linearity of friction term in the ...
متن کاملDiaphragm in pressure pipe: Steady state head loss evolution and transient phenomena
With liberalization of European market, many high head power plants in Switzerland increase their potential generation to remain competitive. The existing surge tanks have to be modified to keep the flow management constant. A relevant way to limit the time of mass oscillation is to increase head losses at the entrance of a surge tank with an orifice. This study focuses on the influencing param...
متن کاملExperimental assessment of head losses through elliptical and sharp-edged orifices
Due to the European electricity market liberalization and the appearance of other renewable electricity producers, an increase of installed peak power capacity is relevant to provide larger amount of electricity in a shorter turbine duration. When the discharge increase is not too large, it is frequently efficient to place an orifice at the entrance of the existing surge tank. Actually, the sur...
متن کاملSurge Tank Design Considerations for Controlling Water Hammer Effects at Hydro-electric Power Plants
A theoretical analysis based on some design considerations for surge tanks is carried out. The effects of different parameters such as the friction losses coefficient and the surge tank cross-sectional area on the water surface oscillations tank and the total discharge are investigated. System of non-linear ordinary differential equations are numerically solved and manipulated. Results show tha...
متن کاملSurge tank throttles for safe and flexible operation of storage plants
Throttle surge tanks are a part of high head powerplants. The main consequence of a throttle placement is to introduce head losses by accelerating the flow. They make it possible to manage extreme water levels during mass oscillations while increasing water surge, e.g. water hammer, in the headrace tunnel. This phenomenon happens every time the flow discharge is changed in the waterway. Either ...
متن کامل