Advances in the Development of Gravitational Water Vortex Hydraulic Turbines

Velásquez, Laura; Chica, Edwin; Posada, Jorge

doi:10.25103/jestr.143.01

Cited by 8 publications

(14 citation statements)

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“…Fortunately, the design of the prototype along with two blade profiles, namely curved and curved blade with the addition of baffle plates would be performed. For better vortex generation, a conical basin was also designed [21]. We were able to conduct the performance analysis process and validation study with the assistance of proper assumptions and the data from the previous researchers.…”

Section: Discussionmentioning

confidence: 99%

Design and Development of a Vortex Turbine for the Hilly Regions of Bangladesh

Khan¹,

Asif²,

Hasib³

et al. 2021

Proceedings of the 2nd International Seminar of Science and Applied Technology (ISSAT 2021)

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In the modern world, the days of fossil fuel-based electricity are numbered. In addition, the need for cleaner, greener, and more efficient energy is on the rise. Sustainable energy technology is needed to meet the demand for an environmentally friendly power source that provides consistent power. Small hydropower is an effective alternative source of energy in mountainous places in many parts of the world. Small hydro-powers reliably produce low-cost and clean power. The study was carried out on a gravitational vortex water turbine, a small hydropower source. It works with very little impact on the environment. Here, gravity-flow water moves turbine blades which are coupled with a generator via a shaft. The turbine used in this study was an impulse turbine. To enhance the efficiency of the turbine, different blade parameters were studied along with different design parameters. By modifying the blade angle and enhancing the blade surface area by adding baffle plates, a more rotational speed can be achieved. It was found that the construction containing 5 blades and 44° blade angle produced an efficiency of 82% for the curved blade profile. As a result, increased electricity production is achieved, and we got an estimated turbine output power of 6.91 KW. This study has the potential of changing the power scenario of the Chittagong Hill Tracts for the foreseeable future.

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Section: Discussionmentioning

confidence: 99%

Design and Development of a Vortex Turbine for the Hilly Regions of Bangladesh

Khan¹,

Asif²,

Hasib³

et al. 2021

Proceedings of the 2nd International Seminar of Science and Applied Technology (ISSAT 2021)

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“…Thirty-six installed GWVHT plants (systems) have been reported throughout the world, as summarised in Table 2, which is updated from [5,23,24]. These plants used heads in the range of 0.6 m to 3.2 m and operated at flow rates between 0.048 m 3 /s and 2.2 m 3 /s, which produced power outputs from 180 W to 20 kW at efficiencies in the range of 29% to 85%.…”

Section: Type Of Hydropower Plant Power Output Applicabilitymentioning

confidence: 99%

“…Table 2. Information on the reported 36 installed GWVHT systems thorought the world (updated from [5,18,23,24]). According to Rahman et al [32], GWVHT systems had an overall efficiency of less than 50% before 2017.…”

Section: Type Of Hydropower Plant Power Output Applicabilitymentioning

confidence: 99%

“…This can be attributed to a lack of understanding of the vortex dynamics created by the rotating turbine, which has multiple blades. Additionally, there has been insufficient comprehensive and detailed research on GWVHT systems, particularly their configuration and parametric studies on key components like the basin, turbine, and channels [23]. This calls for much more research to be carried out to improve their performance significantly.…”

Section: Sitementioning

confidence: 99%

“…We have come across a total of five reviews pertaining to previous research conducted on GWVHT [5,23,32,34,35]. Upon review, it was determined that the reviews conducted by Rahman et al [32], Huwae et al [34], and Sierra et al [35] were notably restricted in scope when compared to those undertaken by Timilsina et al [5] and Velasquez et al [23]. The latter two evaluations demonstrated a comparatively thorough examination of the subject matter.…”

Section: Sitementioning

confidence: 99%

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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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