A Study of The Developing Archimedes Screw as A Turbine

Abstract

Electricity plays an imperative role in improving the rural or remote community economic growth and quality of life. The pico hydro type Archimedes screw turbine (AST) is considered an independent power plant in rural or remote areas. The advantages of the AST are friendly to aquatic biota, the high and stable efficiency (electrical efficiency of 30% to 49%), and can operate in a run of river conditions. However, although this technology has been studied ± two decades, there is still no theory explaining the relationship between conversion energy, the geometry of screws, and efficiency. Therefore, the development of Archimedes screw focuses on the role of a converter water energy categorized as the environmentally friendly power plant. Thus, this paper aims to describe the future work required for the AST so that the basic principles and empirical theories are found. Based on reviews, the AST design can use Rorres and Muller & Senior analysis, AC generators with a pulley and toothed belt transmission systems, and do not immerse the outflow bucket side in the water. Furthermore, for AST to be better, several studies need to be done such as the method of manufacturing precision screws, the effect bubbles in the bucket and how to avoid them, determination optimum of the head and screw length using the slope angle, and investigation of the ratio of the inlet velocity with the angular velocity of a wheel on performance to avoid overflow leakage due to loading.

Design and Manufacture of Portable Screw Turbine of Pico Hydro Power Plant for Road Lighting in Rural Area

“…The automatic control system machine can produced the accuracy and precision of work-piece compoenets [14][15][16]. Manufacturing of screw turbine can used manual machines and computer numerical machines [17][18][19][20].…”

Generation of Electricity From a Hydraulic Turbine in the Djonou River (Benin)

“…In order to determine the various geometric parameters of the screw, the determination of the radius ratio (ρ), the inclination ratio (λ), the volume ratio (v) and the volume ratio per revolution (λ.v) is paramount [8,16,17,28,45]:…”

“…The geometric and hydraulic characteristics of Archimedean screws collected in the works of Brada, 1993Brada, , 1999, Lashofer et al [51,52,53], Lubitz et al [54], Lyons [55], Yulistiyanto et al [20], Maulana et al [12], Saroinsong et al [8], Alonso-Martinez et al [7], Khan, et al [17], Rohmer et al [36], Erinofiardia et al [38] and Dellinger et al [48] indicate that the interior and exterior radius of the Archimedean screw vary respectively from 0.030 m to 0.525 m and from 0.055 m to 0.265 m. The pitch of the screw is between 0.054 m and 1.22 m with a number of screw blades ranging from 1 to 10. The angle of inclination of the screw is generally chosen between 17 • and 45 • The length of the screw and the water flow rate can reach 5.3 m and 1.2 m 3 /s respectively.…”

“…It is therefore necessary to think of means of energy production by hydroelectricity at a lower cost [5,6,7]. The Archimedean screw which is a technology that makes it possible to exploit low water flow rates and low head heights on hydroelectric sites such as small rivers or streams [8][9][10][11][12][13][14][15][16] and in areas remote areas that are difficult to access via the national electricity grid [17] is therefore an asset for Benin. Its design is environmentally friendly and allows fish and other aquatic life to pass through without danger; there is no requirement for deforestation, displacement of people and does not require construction of large dams, penstocks etc.…”

Enhancing Performance Evaluation of Archimedes Screw Turbines under Optimal Conditions: A Focus on Flow Rate Analysis, Empirical Equations, and Comparative Scaling Methods

“…They then extrapolated the results of this laboratory model to the prototype turbine. In 2021 Sari et al [20] investigated the issue of overflow leakage in the turbine. They stated that overflow leakage could affect the turbine rotational speed and, as a result, its performance.…”