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- Journal Article:
Erinofiardi et al.
Potential energy from fluid flow of small rivers or irrigations could be extracted become electricity by using screw turbine. This turbine is promising because the advantages of ultra-low head and fish friendly.Experimental performance of screw turbine for ultra-low head hydro resource is presented in this paper. The screw turbine with anoutside diameter of 142 mm and the water flowrate of 1.2…
- Journal Article:
Badawy et al.
River current energy is regarded as one of the most environmentally friendly sources of electricity. Because it doesn't produce power by holding water in a reservoir and causing a height differential, a river current (or hydrokinetic) device is not a dam. Turbines placed inside rivers immediately harvest the kinetic energy of flowing water. Like Egypt's river Nile can be used to study this…
- Journal Article:
Lisicki et al.
The recent revival of Bayesian optimization has caused widespread utilization of easily accessible and versatile tools in different areas, which involve the search for optimal design or decisions. This method, however, has not yet been explored within the field of renewable energy systems. This study aims to introduce the main benefits of the procedure to the community through the practical…
- Journal Article:
Dellinger et al.
The Archimedean Screw Generator (ASG) allows transforming potential energy of a fluid into mechanical energy and is convenient for low-head hydraulic sites. As it is a new and growing technology with few guidelines for design and performance optimization, the present contribution proposes a new experimental and numerical investigation method for studying ASG performances. In order to study the…
- Journal Article:
Nuernbergk and Rorres
Archimedes screws have become increasingly popular throughout Europe to drive hydropower plants using residual flow from a stream or river. This heightened usage of such screws during the past few years is attributable to their robustness, simplicity, and fish friendliness. Presently the dimensioning of a hydropower site equipped with an Archimedes screw is dependent mainly on the experience…
- Journal Article:
Shahverdi et al.
Archimedes screw turbines have gained popularity in generating power from flowing water. One aspect that hasn't been considered yet is optimizing those parameters that are considered assumptions in the prediction models. In this research, a simple procedure was introduced to design an appropriate Archimedes screw turbine for a given site using a prediction model and an optimization model.…
- Journal Article:
Bouvant et al.
In this study, the performance of an Archimedes screw turbine (AST), in terms of the power coefficient (CP), was evaluated. The design parameters, including the inner and the outer diameter (Di and Do, respectively), the axle length (L), the blade inclination with respect to the longitudinal axis of the screw (α) and the blade stride (p), were…
- Journal Article:
Zhang et al.
Aiming to prolong the duration of detection equipment deployed in deep water, a new type of hydrokinetic turbine with good self-starting ability should be developed to harness low-speed current energy in such deep-water scenarios. In this study, a novel ductless Archimedes screw turbine is proposed to improve the system’s startup performance for low-speed current applications. An…
- Journal Article:
Stergiopoulou and Stergiopoulos
The possibility of exploiting sea and tidal currents for power generation has given little attention in Mediterranean countries despite the fact that these currents representing a large renewable energy resource could be exploited by “modern old technologies” to provide important levels of electric power. It is also well known that one of the oldest machines still in use is the Archimedes…
- Journal Article:
Stergiopoulou and Kalkani
The present paper presents the preliminary investigation of the hydrodynamic behavior of Archimedean hydropower turbines, with inclined and horizontal axis, for the exploitation of the low-head hydraulic energy and the kinetic energy of natural and artificial watercourses, including coastal and tidal currents. By using the similarity theory, some experimental cochlear rotors have been…
- Journal Article:
Walker et al.
Marine energy in the United Kingdom is undergoing a period of growth in terms of development and implementation. The current installed tidal energy capacity is expected to rise to provide 20% of the United Kingdom’s electricity demand by 2050. This article used life cycle assessment to study four tidal energy devices, comparing their embodied energy and carbon dioxide emissions. The device…
- Journal Article:
Rorres
The geometry of an Archimedes screw is governed by certain external parameters (its outer radius, length, and slope) and certain internal parameters (its inner radius, number of blades, and the pitch of the blades). The external parameters are usually determined by the location of the screw and how much water is to be lifted. The internal parameters, however, are free to be chosen to optimize…
- Journal Article:
Shahverdi et al.
Archimedes Screw Turbines (ASTs) can become a popular device to generate electricity from hydraulic power at very low-head or nearly zero-head places. In this article, the performance of ASTs is numerically investigated using Computational Fluid Dynamics (CFD) to assess different screw rotation speeds, volume flow rates, and inclination angles. The numerical model is validated using…
- Journal Article:
Pongduang et al.
The helical tidal current turbine was studied and reported its performance and characteristics for free water flow electric turbine development. The scale model of tidal turbine was built in dimension as: 0.5m and 0.6m of diameters and 1.25m in length; the turbine cross section blade was the symmetric NACA0020 with a 0.07m chord length, and there were 3 blades with the helical angle of 120…
- Journal Article:
Kozyn et al.
Previous hydraulic studies of Archimedes screw power generators (ASGs) have been mostly at laboratory scale. The validity of scaling up models based on these studies for application in field-scale ASGs has been a major research gap. This study developed a nondimensional artificial neural networks (ANN) model to predict shaft power of an ASG using extensive multiscale data sets. The model was…
- Journal Article:
Zhang et al.
A growing interest in harnessing ocean current energy for deep ocean observation platforms has been encouraged by the requirement of cost saving and wide-range deployment. A new concept of deep-water in-situ power generation system using ductless Archimedes screw hydrokinetic turbines was proposed in this study. To fill the hydrodynamic knowledge gap of ductless Archimedes screw hydrokinetic…
- Journal Article:
Kozyn and Lubitz
This paper presents a complete power loss model for an Archimedes screw used for power generation (ASG) including a non-dimensional model to predict power losses due to outlet submersion flooding. This model amends a prior idealized, frictionless ASG performance model to include power losses due to bearing friction, outlet exit effects, internal hydraulic friction and outlet submersion. This…
- Journal Article:
Dellinger et al.
The generation of renewable energy with Archimedes screw generators (ASG) transforming potential energy of fluid flow into mechanical energy is a growing technology suitable for low-head hydraulic sites. This paper presents an improved theoretical model linking screw performance to screw geometry and flow conditions. This model takes into account leakages, friction losses and variable fill…
- Journal Article:
Waters and Aggidis
The Archimedes pump is one of the oldest feats of engineering still being used today. In recent times, it has seen a major revival in modern engineering, by reversing it for use as a turbine. This is now an established turbine, being used in Europe since 1994. It has been found this new turbine device has a plethora of advantages over current existing devices, with the simplicity and…
- Journal Article:
Lubitz et al.
Archimedes screw generators (ASGs) are beginning to be widely adopted at low-head hydro sites in Europe due to their high efficiency, competitive costs, and low environmental impact. ASGs are particularly appropriate for low-head sites. Power is transferred from a water flow to an Archimedes screw by the distribution of static pressure produced by the water volumes between the flights of the…
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