Performance Analysis of Z-Blade Reaction Type Turbine for Low-Head Low Flowrate Pico Hydro

Basar, Mohd Farriz; Hassan, Fatin Syakira Mohd; Rais, Nurul Ashikin Mohd; Zulkarnain, Izzatie Akmal; Mustafa, Wan Azani

doi:10.37934/arfmts.85.2.5165

Cited by 2 publications

(1 citation statement)

References 17 publications

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“…For impulse turbine, the water jet directed by the nozzle that hits the turbine blades will cause them to revolve [9][10][11]. The stationary nozzle on the other hand converts the water's potential energy (pressure) into kinetic energy [12][13][14]. This high-velocity stream's kinetic energy will then directly hit the blades.…”

Section: Introductionmentioning

confidence: 99%

Optimization of Reaction Typed Water Turbine in Very Low Head Water Resources for Pico Hydro

Basar

Rais

Rahman

et al. 2021

ARFMTS

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The purpose of this research is to investigate the dominant parameters that influence the optimum performance of reaction typed turbine at very low water head. The concepts of conservation of mass, momentum and energy are utilised to explore performance characteristics using a graphical technique. Parametric analysis of the governing equation and experimental results were performed to show that the turbine diameter and nozzle exit area has a dynamic response to mass flow rate, angular speed, output power and efficiency. Depending on the nozzle diameter of (0.01 m, 0.006 m, and 0.008 m) and turbine pipe size with (diameter of 0.025 m and 0.015 m), six versions of prototype turbine Z-blade turbine were produced. All the turbines have been tested at 100 kPa static water pressures and below. According to a variety of experimental data for all types of turbines, the turbine diameter and nozzle exit area have a substantial impact on turbine performance, especially at high water heads. Despite differences in turbine length and nozzle exit area, more than 90 % of the pattern curves for rotational speed, water flow rate, and mechanical power were identical. Overall, the Z-blade turbine Type B outperforms, resulting in higher turbine efficiency at low head and low flow water condition.

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Section: Introductionmentioning

confidence: 99%

Optimization of Reaction Typed Water Turbine in Very Low Head Water Resources for Pico Hydro

Basar

Rais

Rahman

et al. 2021

ARFMTS

View full text Add to dashboard Cite

show abstract

Investigation on rotor jet interference in a hydraulic reaction turbine for low head low flow water conditions

Basar

2021

Energy Harvesting and Systems

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The focus of this paper is to investigate the issue of water jet interference, which is a common flaw in simple reaction turbines. When the turbine’s wall crosses the water jet coming from another nozzle, this is known as jet interference. The governing equations are also used to analyse the Z-Blade simple water reaction turbine for an ideal and practical example, based on the principles of mass-, impulses and energy conservation. Various evaluations of real and potential operating losses for low-head (3–5 m) and low-flow (3 L/s and below) water resources have been conducted. According to experimental data, the Z-Blade turbine Type B achieves the maximum rotational speeds at 450 rpm, followed by Type A at 400 rpm and Type C at 300 rpm. By performing parametric analysis via governing equations, the calculated non-interference speed is approximately twice that of the turbine’s maximum speed. Furthermore, as the turbine reaches its maximum rotational speed at the optimal length diameter, the turbine speed decreases without interference from the jet nozzle rotor. This resembles a phenomenon of non-interference rotor jet on Z-Blade turbine.

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Performance Analysis of Z-Blade Reaction Type Turbine for Low-Head Low Flowrate Pico Hydro

Cited by 2 publications

References 17 publications

Optimization of Reaction Typed Water Turbine in Very Low Head Water Resources for Pico Hydro

Optimization of Reaction Typed Water Turbine in Very Low Head Water Resources for Pico Hydro

Investigation on rotor jet interference in a hydraulic reaction turbine for low head low flow water conditions

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