Parametric study of single-stage gravitational water vortex turbine with cylindrical basin

Saleem, Abdul Samad; Cheema, Taqi Ahmad; Ullah, Rizwan; Ahmad, S.M.; Chattha, J. A.; Akbar, Bilal; Park, Cheol Woo

doi:10.1016/j.energy.2020.117464

Cited by 39 publications

(26 citation statements)

References 9 publications

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“…The height and diameters (top and bottom) of the runner, the inlet and the outlet angles, the helical pitch angle, the number of blades and the position in the basin. The height and diameters of the runner, number of blades, inlet, outlet and helical pitch angles were assigned by considering the available literature [14,20,21,[22][23][24]. During the analysis process, three different positions of the runner were compared.…”

Section: Runner Configurationmentioning

confidence: 99%

Runner optimal position in a gravitational water vortex hydraulic turbine with a spiral inlet channel and a conical basin

García¹,

Rubio-Clemente²,

Chica³

2024

RE&PQJ

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A gravitational water vortex hydraulic turbine (GWVHT) is a low head hydropower technology with a vertical runner for extracting energy from the water vortex. To determine the optimal position (h) of the runner for the hydropower plant efficiency to be increased, a runner in three different positions was compared using computational fluid dynamics (CFD). The position of the runner was a function of the basin height (H). The maximum efficiency (44.15%) was established when the runner was located at 60% of H. The angular velocity associated with the maximum efficiency was 14 rad/s.

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Section: Runner Configurationmentioning

confidence: 99%

Runner optimal position in a gravitational water vortex hydraulic turbine with a spiral inlet channel and a conical basin

García¹,

Rubio-Clemente²,

Chica³

2024

RE&PQJ

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“…Until 2019, no top energy journals had published any studies on GWVHT systems. However, since 2019, six papers have been published in Renewable Energy [36][37][38][39][40][41] and four papers have been published in Energy [42], Energy Conversion and Management [43], Applied Energy [44], and Energies [45], which are among the top journals in the energy field.…”

Section: Overview Of Past Studies On Gwvht Systemsmentioning

confidence: 99%

A Review of Gravitational Water Vortex Hydro Turbine Systems for Hydropower Generation

2023

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Hydropower is one of the most sustainable and desirable renewable energy sources. Gravitational water vortex hydro turbine (GWVHT) systems are one of the most suitable and sustainable renewable power generation devices for remote and rural areas, particularly in developing countries, owing to their small scales and low costs. There are various GWVHT systems with different configurations and various operating conditions. The main components of a GWVHT system include the inlet and outlet channels, a basin, and a turbine on which there are a number of blades attached. This paper presents a comprehensive review regarding the progress and development of various GWVHT systems, covering broad aspects of GWVHT systems, particularly various types of basins, inlet and outlet channels, turbines with blades which have different shapes, orientations, sizes, numbers, etc. The nature of the previous studies is summarised. The fundamentals of the vortex dynamics involved and the quantitative analysis of the performance of GWVHT systems are also described. The turbulence models and multiphase models used in some leading numerical simulation studies have been reviewed. As a case study, the implementation of a GWVHT system in PNG is presented. Based on the review of previous studies regarding GWVHT systems, the major issues and challenges are summarised, and some key topics are recommended for future research work on the performance of GWVHT systems.

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“…The GWVT runner having blades extracted energy from a vortex into mechanical power. A shaft connected with the turbine runner is conjoined with the generator, which generates electric power (Saleem et al, 2020). The conventional micro-hydro turbines such as Kaplan and Pelton turbines require a larger flow rate and head, but it is expensive, and lots of capital cost is wasted on civil works (Power et al, 2016;Abbasi et al, 2011;Shoukat et al, 2021).…”

Section: Research Articlementioning

confidence: 99%

“…The results showed that aluminiummade turbine material showed greater efficiency than turbine made from mild steel (Sritram et al, 2015). A detailed experimental analysis was performed on GWVT to improve the efficiency of GWVT (Saleem et al, 2020). Moreover, a study was performed on a multi-stage GWVT assembled in conical shape basin with an independent shaft to maximize the power out of the plant.…”

Section: Research Articlementioning

confidence: 99%

Performance Investigation of a Single-Stage Gravitational Water Vortex Turbine Accounting for Water Vortex Configuration and Rotational Speed

Riaz¹,

Sharif²,

Siddiqi³

2022

JEAS

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Gravitational water vortex power plant is an emerging technology among various micro hydropower plants because of its low head, cost-effectiveness, environmentally friendly and minimal installation and setup time. In the present study, the performance of single-stage gravitational water vortex turbine assembled in a conical basin with curved blade has been analyzed at different head and flow rate to investigate the performance parameters such as vortex formation, vortex height and rotational speed. In addition to that, the influence of vortex formation, vortex height and vortex shape on rotational speed is also investigated. A two input factors, i.e. water head and flow rate, and each having five-level has been selected in a present study. The results showed that at median head 0.70 m and flow rate 0.004 m³/s, the maximum rotational speed 172 rpm and vortex height 0.59 m, respectively, with strong and fully developed air core is achieved which results in high output power and efficiency. However, the water disturbance, weak shape vortex formation and decrease in the vortex height and rotational speed occurred at a minimum and maximum inlet head of 0.6 m and 0.8 m and flow rates of 0.002 m³/s and 0.006m³/s flow rates, respectively, which results in a decrease in the overall performance of Gravitational water vortex turbine. Further, the vortex formation, vortex height and vortex shape strongly influence the rotational speed. Overall, 0.7 m head and 0.004 m³/s developed a strong vortex with a rotational speed of 172 rpm and vortex height of 0.59 m. Furthermore, Analysis of Variance was performed to investigate the percentage contribution and significance of each input parameter on response.

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Parametric study of single-stage gravitational water vortex turbine with cylindrical basin

Cited by 39 publications

References 9 publications

Runner optimal position in a gravitational water vortex hydraulic turbine with a spiral inlet channel and a conical basin

Runner optimal position in a gravitational water vortex hydraulic turbine with a spiral inlet channel and a conical basin

A Review of Gravitational Water Vortex Hydro Turbine Systems for Hydropower Generation

Performance Investigation of a Single-Stage Gravitational Water Vortex Turbine Accounting for Water Vortex Configuration and Rotational Speed

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