Abstract
The use of the energy of small watercourses with the help of small hydropower plants is one of the promising directions for the development of renewable energy. This article presents the designs of two different hydraulic engines, each of which has its own advantage. Therefore, the task of calculating the real parameters of the design of a mini-hydropower plant based on Lenyov hydrobelt has been solved. Theoretical calculations were validated numerically by the finite volume method and computational fluid dynamics modeling; both methods gave similar results. According to the results of calculations, this design based on the Lenyov hydrobelt with the capacity of 16 kW is advisable to place in a river with a flow velocity of at least 4.5 m/s. The article also presents an alternative type of developed mini-hydropower plant, -a volume-sectional hydraulic engine. The proposed rotary-type positive displacement hydraulic engine can operate at low pressure on a flat surface. The advantage of the hydraulic engine is the sectional operation of several working chambers. It was established that a high water velocity and a large volume of passing water was not required. The total force acting in the hydraulic engine is 5430.19 N. Due to the use of conical inlet channels, the water flow velocity was increased and the water flow became directional. The frequency of rotation of the hydraulic engine shaft at a river flow velocity of 4 m/s was 60.43 rpm. The received power in these modes was 22.25 kW.
Highlights
Introduction published maps and institutional affilThe use of the energy of small water streams using small hydropower plants is one of the promising directions for the development of alternative energy
Among existing types of turbines, we propose to consider a new mini-hydropower plant design based on the Lenyov hydrobelt, which uses the original method of energy production from any kind of water flow
We have developed an alternative type of mini-HPP, a volume-sectional hydraulic engine
Summary
Introduction published maps and institutional affilThe use of the energy of small water streams using small hydropower plants (miniHPP) is one of the promising directions for the development of alternative energy. The. Ministry of Investment and Development of the Republic of Kazakhstan listed small damless hydropower plants based on the Lenyov hydrobelt in the category of most economically efficient green technologies of power production [1]. Among existing types of turbines, we propose to consider a new mini-hydropower plant design based on the Lenyov hydrobelt, which uses the original method of energy production from any kind of water flow (rivers, tides, sea waves, etc.). It uses natural flow without prior conversion (construction of dams, canals, or pressure pipes). The Lenyov hydrobelt uses two shafts with many working blades, which allows for concentrating mechanical energy on the chain (cable, halyard, tape, etc.) and eliminates the need to manufacture blades, shafts and other elements of special strength and accuracy. iations.
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