Study on screw turbine of the micro hydroelectric power plant working in low pressure water flows

Abstract

Nowadays, the demand for electricity is becoming more and more important, so finding new, safe and renewable energy is considered an important issue. Micro hydroelectric power plants with screw turbines are ecologically clean, renewable and efficient operation in low-pressure water flows is presented in the article. This article examines the transmission of 2 parallel screw turbines to one generator through a chain drive and increasing the output power by controlling the part connected to the generator in obtaining electricity from low-pressure water flows.

Analysis of the efficiency of a counter-rotary hydraulic unit with a jet hydro turbine based on a Segner wheel

“…A jet of water of width ℓw hits the active water wheel with a speed vj, and the active wheel rotates with an angular speed ωw. The linear speed of rotation of a water wheel with optimal parameters is equal to half the speed of the water jet acting on it [7]. Then the radius of the active impeller:…”

“…The kinetic energy of this outflowing water flow is not used. By replacing the stator of this device with an active water wheel, a counter-rotary hydraulic unit was developed, which has a reactive and active impeller, which work effectively in low-pressure watercourses [7,8].…”