Comparison of cylindrical and conical basins with optimum position of runner: Gravitational water vortex power plant

Dhakal, Sagar; Timilsina, Ashesh Babu; Dhakal, Rabin; Fuyal, Dinesh; Bajracharya, Tri Ratna; Pandit, Hari Prasad; Amatya, Nagendra; Nakarmi, Amrit Man

doi:10.1016/j.rser.2015.04.030

Cited by 91 publications

(44 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Thus, the computational study suggests that the conical basin is much better than the cylindrical one for the provided head and discharge. It is highlighted that several researchers also conducted a number of tests on the basin [12,15,24]. They found that the vortex strength in the conical basin was stronger than in the cylindrical basin.…”

Section: Resultsmentioning

confidence: 99%

“…In the basin, a gravitational vortex is generated and the kinetic energy of water is extracted by a vertical-axis turbine in the centre of the vortex, with rotates coaxially with it to harness the kinetic energy. The system can be installed in a serial or parallel configuration along the river to increase power production [10][11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Numerical analysis of the inlet channel and basin geometries for vortex generation in a gravitational water vortex power plant

García¹,

Rubio-Clemente²,

Chica³

2020

REPQJ

View full text Add to dashboard Cite

Recently, the utilization of low-head hydroelectric technologies has received a great attention for the expansion of distributed power systems into isolated regions that are difficult to be connected to the electrical grid, especially in developing countries. The use of gravitational vortex hydropower systems can be a renewable and suitable option to expand electricity access and promote development in these remote regions, which are concomitantly rich in hydric resources, due to this system can operate with low head without the need of a large reservoir and installation area. In this study, the performance of the inlet channel and basin of a gravitational water vortex turbine was investigated. Two inlet channels and two basin geometries were numerically analysed in Ansys Fluent software. The velocity and vortex height were calculated and compared for each setting. It was found that the inlet channel with conical basin tended to produce more symmetric vortex in comparisons with that generated by the cylindrical geometry. Additionally, the conical basin maximized the flow velocity on the water surface area.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Numerical analysis of the inlet channel and basin geometries for vortex generation in a gravitational water vortex power plant

García¹,

Rubio-Clemente²,

Chica³

2020

REPQJ

View full text Add to dashboard Cite

show abstract

“…A turbine is placed in the centre of the vortex, using the rotational water field to generate torque on the runner. It has been implemented in sites in Austria [40], Indonesia, Nepal [42,43] and…”

Section: Low-head Pico-hydropower Turbine Solutionsmentioning

confidence: 99%

“…However, there is some scepticism in its use [46], with low efficiencies found in some laboratory experiments [42,44,45], whilst some authors claim higher efficiencies, close to 75%, at 1.5 m head and water flow rate of 0.2 m³/s [43]. The low-head Turgo turbine proposed in [39] has been shown to frequency.…”

Section: Low-head Pico-hydropower Turbine Solutionsmentioning

confidence: 99%

Challenges Facing the Implementation of Pico-Hydropower Technologies

et al. 2019

View full text Add to dashboard Cite

840 million people living in rural areas across the world lack access to electricity, creating a large imbalance in the development potential between urban and rural areas. Pico-hydropower offers a cost-effective way of accessing electricity, where the resource exists. This paper discusses and critically examines several challenges that remain in implementing pico-hydropower systems, such as local manufacturing, maintenance and repair of turbines, low-head solutions, dealing with variation in the water flow between seasons, the ability to deal with income generating loads and low system power and capacity factor. The solutions to many of these problems exist; several low head turbine systems are appearing on the market, and new power electronic packages are able to improve the system capacity factor. Some turbines are now being designed for local construction using design for manufacturing rules, so only basic workshop tools and process are required to build turbine systems and components, and enabling turbines to be locally repaired. Through the commercialisation and implementation of these solutions, the proliferation of pico-hydropower systems can take place providing low cost sustainable electricity for remote communities, but this requires a stronger emphasis in social awareness and policy. Three critical enabling factors for the success of pico-hydropower projects are identified through this analysis: understanding the local context, financial sustainability and stakeholder awareness.

show abstract

“…It is also discovered that a cylindrical container with an orifice in the middle of the basin with plate might be the best configuration in order to obtain the optimum value of kinetic energy. [4] conducted research on the effect of conical basin compared to conventional cylindrical basin on the production of kinetic energy. The research found that the basin entrance, basin diameter, notch length, canal height and cone angle affect the production of kinetic energy by vortex turbine.…”

Section: Fig 2 Vortex Turbinementioning

confidence: 99%

Design of Mini Generator based on the Principle of Water Flow Pressure by using Vortex Turbine

2019

IJITEE

View full text Add to dashboard Cite

In Malaysia, usually an electricity energy is generated based on fuel sources such as coal and natural gases. Since the consumption of electric energy is keep increasing yearly, the extinction of these sources becomes one of the main problems in this industry. Thus, the country needs to spend higher expenditure to import these sources since it has limited quantity and it is not a renewable energy source. In addition, the usage of the coal as sources affect the environment. Therefore, this research proposed a prototype of mini generator based on the principle of water flow pressure. The prototype is developed based on the flow of water vortex that is influenced by gravity and has the capability to generate energy at low-head flat geographically area. A controller for this system is designed by using Arduino. The objective of this research is to study the efficacy of this type of generator since it is one of the techniques to generate electricity. The efficiency of the designed prototype is analyzed based on different radius value of the basin and the effect of different type of motor used to spin the turbine. The results show that the smaller radius of the basin and direct drive motor generate higher voltage if the system is being tested individually. However, if both characteristics are combined together, the highest radius of basin with direct drive motor produced bigger value of voltage.

show abstract

Comparison of cylindrical and conical basins with optimum position of runner: Gravitational water vortex power plant

Cited by 91 publications

References 9 publications

Numerical analysis of the inlet channel and basin geometries for vortex generation in a gravitational water vortex power plant

Numerical analysis of the inlet channel and basin geometries for vortex generation in a gravitational water vortex power plant

Challenges Facing the Implementation of Pico-Hydropower Technologies

Design of Mini Generator based on the Principle of Water Flow Pressure by using Vortex Turbine

Contact Info

Product

Resources

About