Hydroscrew turbines feasibility study (original) (raw)
Related papers
To meet the demand for electricity, it is necessary to maintain a distributed energy matrix, focusing on renewable sources, taking into account the socio-environmental premises. By 2026, energy consumption in the country can reach 741 TWh and hydraulic power is the main source of supply. With great potential to be explored, especially in the state of Rondônia (Brazil), the Small Hydropower Plants (SHPs) are one of the main candidates in contributing to the growing energy demand. It is imperative that energy efficiency techniques and technologies, such as repowering, be used by public policies in order to promote sustainable development.
Hydro Power and Turbine Systems Reviews
Jurnal Teknologi, 2015
Hydropower energy is one of the most suitable and efficient source of renewable energy which depends on more than century of experience for this issue. The power capacity and facility are two criteria required for the classification of hydropower plant. The first one consists of five technologies: dammed reservoir, run of river, pumped storage, in stream technology and new technology gravitational vortex. The other one is classified according to power scale is Large, Small, Mini, Micro and Pico Hydropower. Nowadays most of rural areas in developed and developing countries use the hydropower plant for producing electricity, it is cheap and effective. This paper gives a review of hydropower technologies and turbines; it is focusing on the categories and performance of hydro power systems and the most suitable turbines which can be used.
Small Scale Hydro Turbines for Sustainable Rural Electrification Program
2018
Article history: Received 30 March 2018 Received in revised form 1 August 2018 Accepted 4 August 2018 Available online 10 September 2018 Hydropower is one of the world leading green alternative energy to produce electricity besides solar and wind energy. Most potential sites for large hydropower scheme in Peninsular Malaysia have been explored. Due to cabling cost and geographical constraints rural electrification program requires in-situ application which make small hydropower scheme more favourable choice. This run-of-river scheme is environmental friendly as no dam is required. Potential locations in Malaysia have been suggested for small hydro turbine applications, which are ideal for eco-friendly tourist industry and remote power supply. The two such sites are Kg. Tual, Raub, Pahang and Gunung Ledang, Tangkak, Johor. The preliminary studies have been conducted at both locations to select suitable hydro turbine based on their head and water flow rate. Altimeter and water velocit...
Selection of Axial Hydraulic Turbines For Medium Head Micro hydropower Plants
The creation of highly efficient hydro turbine for medium head micro hydro power plants is considered. The use of uncontrolled hydro turbines is a promising means of minimizing costs and the time for their recoupment. The model axial hydraulic turbine produced. The rotor diameter of this turbine is 200 mm. In the design of the working rotor, ANSYS CFX software is employed. Means of improving the efficiency of micro hydropower plants by optimal selection of the turbine parameters in the early stages of design are outlined. The energy efficiency of the hydro turbine designed for use in a micro hydropower plant may be assessed on the basis of the coefficient of energy utilization, which is a function of the total losses in all the pipeline elements and losses in the channel including the hydro turbine rotor. The limit on the coefficient of energy utilization in the pressure pipeline is the hydraulic analog limit, which is widely used in the design of wind generators. The proposed approach is experimentally verified at Engineering Institute. A model axial hydraulic turbine with four different rotors is designed for the research. The diameter of all four rotors is the same: 90 mm. The pipeline takes the form of a siphon. Working rotor R2, designed with parameter optimization, is characterized by the highest coefficient of energy utilization of the pressure pipeline and maximum efficiency. That confirms that the proposed approach is a promising means of maximizing the overall energy efficiency of the micro hydro-power plant.
Development of Micro Hydro Turbines as Renewable Energy Applications for Educational Purposes
38th IAHR World Congress - "Water: Connecting the World", 2019
Energy is a priority to guarantee economic development and a good standard of living; however, current production and consumption models have become unsustainable. Hydropower is a renewable energy, that helps the problems that are caused by climate change, with a mature technology (turbines are based on designs nearly a century old) and of high global efficiencies. The novelty in hydroelectricity has now a lot to do with its scale. The development of small-scale hydroelectric power plants is growing up in Argentina. Since 2012, in the School of Exact, Physical and Natural Sciences of the University of Córdoba (Argentina) we have been developing projects designing micro-turbines so that they could be manufactured in local workshops. These designs should guarantee low costs (even sacrificing efficiency) in order to allow decentralized energy supply in communities that cannot be linked to the national interconnected system. The machines developed were four: Michell Banki (working power: 18 kW), an axial turbine (working power: 2 kW), Turgo (theoretical power: 2.55 kW) and Pelton (working power: 1 kW). In this work, the design and numerical modeling used to make the turbines more efficient with the limitations of simplicity imposed on the schemes and the results are shown.
An experimental study of improvement of a micro hydro turbine performance
1999
The thesis includes a literature survey of small hydraulic turbines, incorporating a historical review. The possible role of "micro hydros" in generating power in various parts of the world, and particularly in Iran, is discussed. The theory of turbo machinery, particularly with regard to axial flow turbines, is presented next. This is followed by some details on the design of guide vanes, runner blades and draft tube of axial flow turbines, these components being usually regarded as areas which have major impact on the performance of hydraulic turbines. The next chapter gives the details of the test circuit that was constructed. This could provide water volume flow rates of up to 0.15 m3/s at heads of up 25m. The two dynamometers that were used could adsorb pores to up to 25 kw and 50 kw respectively. An existing micro-turbine, the Agnew turbine, was selected for examination and possible improvement. The first possible improvement was the introduction of guide vanes upstr...
Hydro Power and Comparative Turbine Performance Evaluation
2015
This paper presents a review of development of hydro power, its basics, teaching and performance evaluation. The laboratory experimental data pertaining to Pelton, Francis and Kaplan small turbines has been analysed. The analysis presented here is based on turbine shaft load resulting in utilization of water power and includes comparative overall efficiency, specific speed and unit quantities based on data is presented.
Design of Micro Hydro Turbine for Domestic Energy Generation
IARJSET, Tejass Publishers, India, 2020
The demand for electricity in developing country is alarming. The national grid power supply sources are insufficient and are not distributed effectively, hence the need to design and develop alternative source of power supply that can be harness locally. In this work a micro water turbine design was presented that could be used in laminar (low) flow to produce electricity using water storage overhead reservoir tank as a source of water couple with generators. The flow of water has kinetic energy to turn water turbine for the production of electricity. The energy produce is clean and does not cause global warming. The water turbine was design and model using SolidWorks engineering drawing software. The formulae for the calculation of flow and capacity parameter were highlighted. The water would flow from the water reservoir tank at a speed range of 3 m/s to 5 m/s to turn the water turbine. The flow rate of water from the jet would hit the cup on the runner causes the turbine to rotate due to the pressure by the flow of the water with 16 cups. The turbine would produce a runner rotation range of 5 rpm to 100 rpm with a torque of 3350 Nm. The water turbine could generate a power up to 35 kW and the water recycled into the overhead reservoir tank via water pump. The water pump will be powered by the electrical energy generated from the coupled generator to the water turbine. This will bring about the optimization of available water sources utilization and the production of power higher efficiency. The longevity of hydroelectric power plants makes it economically viable for the generation of electricity.
Design and Fabrication of Domestic Hydro Turbine
Day by day the demand of electricity increases, due to growing population & commercialization. The power consumption is more than generation by conventional method. Hence, hydroelectricity exist as one of the option to meet the growing demand for energy by nonconventional method. The performance of hydro turbine is strongly influence by the characteristic of water inertia. So in this paper we are attempting the way of micro generation of hydropower for domestic purpose
Design basics of a small hydro turbine plant for capacity building in sub-Saharan Africa
This paper presents a simplified design considerations for a propeller hydro-turbine, including tabulated relevant mathematical expressions of operating parameters. In the design calculation, a 2.5 m head and 0.183 m3/s flow rate were used as river data for power of 2.61 kW. A four-blade propeller with an outer diameter of 0.226 m and a hub diameter of 0.079 m was considered suitable for the low head application. Dimensionless performance parameters for various power (2–10 kW) and flow rate (0.2–0.6 m3/s) were evaluated (using constant head and rotational speed), the results were tabulated and graphs plotted. The static axial force on the blade and hub analysis was carried out and results shown satisfactory performance of aluminum 6061-T6 alloy as the blade material. Popularisation of small hydro power (SHP) design and production technology in sub-Saharan Africa through domestic capacity building will accelerate local fabrication of SHP plants and components. The study recommends that the design process be based on available materials and manufacturing facilities. The provision of SHP for rural areas, industrial estates and standalone electrification will provoke commercial and industrial activities in sub-Saharan Africa. This will consequently raise the productivity and the standard of living of the people.