A New Methodology to Design Sustainable Archimedean Screw Turbines as Green Energy Generators

Abstract

Current energy demand and climate target plans are leading to green energy facilities which are efficient and sustainable. Archimedean screw turbines (ASTs) are used to generate hydroelectricity in low heads. They have been manufactured and installed worldwide. However, there is a lack of knowledge about how to design them efficiently. In this study, the performance of ASTs is analyzed using an analogy between ASTs and bucket elevators. Based on this analogy, a theoretical hypothesis on how to produce efficient ASTs is proposed. The new methodology for the design of ASTs is based on two considerations: the filling level of the AST buckets must be 85% and the increase of leakage losses must be minimized. This hypothesis is numerically and experimentally studied. Two experimental prototypes were developed and installed in the north of Spain. The numerical and experimental results are provided. A discussion comparing the results of this work and other results from the literature is presented. Finally, conclusions are drawn from this work that contribute to the improvement of AST technology as a sustainable facility to generate green energy.

Pengaruh Sudut Kemiringan Terhadap Putaran Dan Daya Hidrolisis Pada Turbin Archimedes Screw Portable

“…Pembangkit listrik dengan daya dibawah 5 kilowatt pada daerah seperti pegunungan yang memiliki aliran sungai kecil sebagai sumber energy Pico Hydro (PLTPH), sudah mulai dikembangkan [6]. Pico hydro memberikan keuntungan yang signifikan, termasuk biaya, dibandingkan jenis pembangkit listrik lainnya, implementasinya dapat menjadi tantangan [7], termasuk ketergantungan yang besar pada kondisi spesifik lokasi untuk desainnya [8]. Hal ini yang menginspirasi penelitian turbin portable.…”

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

“…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.…”

“…Several theories and design-simulation procedures have therefore been developed for this turbine by certain authors such as Alonso-Martinez et al [10], Saroinsong et al [11], Purece, and Corlan [12], Dellinger et al [14], Slaboch et al [18], Fiardi [27], Siswantara et al [28], Yulianto et al [29], Dragomirescu [30], Thombare et al [31], Rosly et al [32], Abdullah et al [33], Muller [34], Yulianto et al [35], Rohmer et al [36], Simmons et al [37], Erinofiardi et al [38], Yoosef-Doost and Lubitz [39], Hedia et al [40] followed by an on-site or laboratory experimentation phase discussed by some authors. Ubando et al [41] for their part have examined different methods of manufacturing Archimedean screw turbines such as the 3D printing method still in their early stages of development and additive manufacturing as having a relatively lower environmental impact than conventional manufacturing of turbine blades.…”

Noise Generation and Acoustic Impact of Free Surface Hydropower Machines: Focus on Water Wheels and Emerging Challenges

“…Gravity hydraulic machines use water weight to generate energy. The two most known types of gravity machines are gravity water wheels, used in the past to drive water mills [ 1 ], and Archimedes screws [ 2 ]. Gravity water wheels are the focus of this study.…”