Numerical Optimization Study of Archimedes Screw Turbine (AST): A case study

Shahverdi, Kazem; Loni, Reyhaneh; Ghobadian, Barat; Gohari, Alireza; Marofi, Safar; Bellos, Evangelos

doi:10.1016/j.renene.2019.07.124

Cited by 40 publications

(21 citation statements)

References 16 publications

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“…The results of the report show very similar efficiency patterns for all the plants studied, with peak efficiencies around 75%. Other studies find similar efficiencies of between 60% and 80% [ 2 , 4 , 8 ]. Most of the references agree that leakage losses are one of the most influential parameters in the efficiency of turbines [ 2 ].…”

Section: Introductionmentioning

confidence: 61%

“…The AST was patented in 1991 by Karl-August Radlik [ 3 ]. It has gained popularity recently due to important advantages over alternatives, such as its suitability for low heads, the by “the simple construction process”needed for its installation and its reduced environmental impact [ 4 , 5 , 6 , 7 ]. Although the Archimedes screw was developed for pumping water from lower to higher levels, the use of this device in recent years focuses on the generation of sustainable energy.…”

Section: Introductionmentioning

confidence: 99%

“…The most relevant advantages of the AST are its low cost of manufacturing, installation and maintenance and its low environmental impact. In addition, the construction process needed is very simple and fish friendly [ 4 , 5 , 6 , 7 ]. Due to the low rotational speed and the atmospheric pressure, most fish species are able to pass through the turbine with no injuries.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

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

Alonso-Martínez

Sierra

Díaz

et al. 2020

IJERPH

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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.

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Section: Introductionmentioning

confidence: 61%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

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

Alonso-Martínez

Sierra

Díaz

et al. 2020

IJERPH

View full text Add to dashboard Cite

show abstract

“…The cylindrical shaft can be inclined or aligned with the flow. If the cylindrical shaft is tilted, the angle of inclination is called [3,4].…”

Section: Introductionmentioning

confidence: 99%

Application of a central composite face-centered design in the optimization of an Archimedean hydrokinetic turbine

Betancour¹,

Velásquez²,

Jaramillo³

et al. 2024

RE&PQJ

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Currently, in the literature, there are no general guidelines for the optimal hydraulic design of Archimedean screw turbines (AST) used in hydrokinetic applications. Therefore, this study is aiming at selecting the most significant geometric factors, such as the diameter ratio between the inner (𝐷𝑖 ) and the outer (𝐷𝑜) diameters (i.e., 𝐷𝑖/𝐷𝑜), the axle length (𝐿) and the blade stride (𝑝), influencing the AST performance by using a central composite face-centered (CCF) experimental design combined with the response surface methodology (RSM). The statistical analysis of variance (ANOVA) test identified with a significance level of 0.05 that the most significant variables on the performance of the turbine were 𝑝 and 𝐷𝑖/𝐷𝑜. The AST efficiency was evaluated by means of the power coefficient (𝐶𝑃), which was calculated by means of computational fluid dynamics (CFD) methods coupled with the 6-degrees of freedom (6-DoF) approach. The second-order polynomial model was used to predict the 𝐶𝑃 and the coefficient of determination (𝑅 2 ) was found to be 97.4%.

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“…At present, one of the most important challenges facing the world in the production of sustainable energy for several reasons, includes decreasing fossil fuels, increasing pollution and increasing carbon dioxide emissions. Therefore, researchers are advised to use clean and renewable alternative energies such as wind energy, hydropower, solar energy and geothermal energy as in [1].…”

Section: Introductionmentioning

confidence: 99%

Investigation of Physical and Numerical Model of Archimedes Screw Turbine

Abdullah¹,

Khalil²,

Kamel³

et al. 2020

JPEE

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Archimedes screw turbines have been developed as they work with a low head with high efficiency, where flow energy can be exploited in small rivers, streams, regulators and others. The power can be produced using Archimedes turbines and depends on some parameters including the number of blades, flow, and angle of the shaft inclination and the length of the pitch. A physical and numerical model has been developed to determine the performance of the Archimedes turbine on the Ramadi Dam in Iraq. The physical model was made of stainless steel with the following parameters (length 1000 mm, pitch 70 mm, diameter ratio 0.536, inclination angles 30˚, 35˚, 40˚, 45˚). Work was carried out on different flow rates and inclination angles. The experimental results showed that the highest efficiency was 81.4% at 35˚ inclination angle and a flow rate of 1.12 l/s; the maximum power of 9.03 watts was at a 45˚ inclination angle and a flow rate of 2.065 l/s and 72% efficiency. Also, the impact of the pitch and the number of blades were studied. The results show that torque is increase with an increase in the pitch length, and torque is decreased with increase in several blades. The numerical results showed that the using of two blades led to a greater power produced. The comparison of the numerical and experimental results showed a good agreement, also the comparison with the published data showed a good agreement. As a final result the Archimedes screw has many positive points making it a good potential candidate. The results that emerged show the possibility of using this type of turbine in the Euphrates River in Anbar Governorate-Iraq, as the province is characterized by the presence of many regulators on the river in which turbines can be employed.

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Numerical Optimization Study of Archimedes Screw Turbine (AST): A case study

Cited by 40 publications

References 16 publications

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

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

Application of a central composite face-centered design in the optimization of an Archimedean hydrokinetic turbine

Investigation of Physical and Numerical Model of Archimedes Screw Turbine

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