scholarly journals The Effect of Alfha Angle Variation Sudu Rotor Blade On Wind Turbine Performance Using Blade NACA 0018

2021 ◽  
Vol 1 (2) ◽  
Author(s):  
Habibullah ◽  
Rachmad Firdaus
Keyword(s):  
Rotor Blade ◽  
Alternative Energy ◽  
Power Plants ◽  
Fossil Fuels ◽  
Mechanical Energy ◽  
Condition Dependence ◽  
Hydroelectric Power ◽  
Angle Variation ◽  
Turbine Wheel ◽  
Water Turbine

Indonesia currently has a growing need for energy, this will experience an energy crisis condition, dependence on fossil fuels will at least pose a serious threat, therefore there must be alternative energy as a substitute and reserves such as wind energy, water energy, solar energy, and other.  Because Indonesia has abundant water sources, with this my research intends to develop water as a renewable energy source that can be used as a source of energy for hydroelectric power plants or also called water turbines.  The water turbine is an early generator that uses the potential energy of water to become mechanical energy where the water turns the turbine wheel.  This study aims to determine the effect of the number of blades, the effect of the profile, the effect of rotor blade wing tip, Naca 0018, and the resulting energy efficiency.  This research uses experimental research type.

Engineering Solutions to the Greenhouse Gases Generated by Hydroelectric Plants

2014 ◽  
Vol 136 (2) ◽  
Author(s):  
Kaufui Vincent Wong
Keyword(s):  
Power Plants ◽  
Mechanical Design ◽  
Hydroelectric Plant ◽  
Hydroelectric Power ◽  
Current Review ◽  
Hydroelectric Power Plants ◽  
Water Turbine ◽  
Hydroelectric Plants ◽  
The Right ◽  
Do The Right Thing

There is a controversy brewing for about 10 years that hydroelectric power plants are not a clean, renewable source of electricity. The current review indicates that the source of methane is not in the mechanics or mechanical design of the equipment used. The source of the methane is from nature, and man's failure to do the right thing. This methane may be reduced or completely eliminated. If this cannot be accomplished or if it is too expensive to retrofit the hydroelectric plant, then the deep water may be preprocessed (and the methane collected) before being used in the water turbine. Several methods have been introduced and discussed. Details have been omitted so that practicing engineers and other professionals can obtain funds to research and develop or invent the practical solutions suited to conditions local to the problem.

PROSPECTS FOR COMBINING SOLAR PLANTS WITH STRUCTURAL ELEMENTS OF ENVIRONMENTAL HYDRAULIC FACILITIES AND COMPLEXES

2021 ◽  
pp. 57-65
Author(s):  
O. N. CHERNYH ◽  
◽  
A. V. BURLACHENKO ◽  
V. V. VOLSHANIK
Keyword(s):  
Power Plants ◽  
Hydroelectric Power Station ◽  
Hydroelectric Power ◽  
Structural Elements ◽  
Power Station ◽  
Optimal Arrangement ◽  
Turbine Wheel ◽  
The North ◽  
Energy Needs ◽  
Dam Building

The issues of solving modern problems related to meeting the energy needs of environmental hydraulic engineering are considered. The problem of improving the methodological basis for choosing the optimal arrangement of elements of photovoltaic devices (SPEU) on the blocks of the dam building of hydroelectric power plants (HPP) of 4 main types is formulated. The graphical dependences of the estimation of the power ratio of the combined SPEU and HPP on the diameter of the turbine wheel are analyzed. As a result of the analysis of the influence of the location of the transformer on the possibility of placing the SPEU on the buildings of the hydroelectric power station, it was revealed that in order to increase the adaptability of the revitalized even large hydro system with a separate building of the hydroelectric power station, it is preferable to place power transformers from the downstream side. It is noted that according to the results of the schematic study for the medium-pressure hydroelectric complex Lagdo in the north of Cameroon, the placement of solar cells will provide an additional 6.95% of the capacity of the operating hydroelectric power station.

scholarly journals Mitigation of the alternative energy for the wind farm center considering temperature and wind speed

2018 ◽  
Vol 204 ◽  
pp. 04013 ◽  
Author(s):  
Rima Septiani Prastika ◽  
A.N. Afandi ◽  
Dwi Prihanto
Keyword(s):  
Wind Speed ◽  
Power Plant ◽  
Alternative Energy ◽  
Power Plants ◽  
Fossil Fuels ◽  
Renewable Energy Sources ◽  
Electrical Energy ◽  
Natural Source ◽  
Final Conclusion ◽  
Sustainable Procurement

Recently, electric usages are increasing every year by year in many sectors. In facts, fossil fuels have been fueled to produce electrical energy availability at many power plants which are very limited for the sustainable procurement. Developing and implementing renewable energy sources should be urgently promoted to reduce the dependence on fossil fuels that have been fueled to generate electricity for the long period throughout various power plant combinations. In expectation, the natural source of electrical energy which environmentally friendly and easy to obtain in nature is recommended to explore for the existing energy producers. The natural source of energy can be operated as an alternative power plant to reduce environmental effects and to decrease air contaminants. These works cover those opportunities. In these studies, the method used is a quantitative category with collected primary and secondary data for all evaluations and mitigations. In general, these works are also designed for identifying problems and looking for literature, data collection, processing stage, analysis phase, and final conclusion. The data used is defined in terms of temperature, air pressure, and wind speed. The collected data are supposed to the Purwoharjo City of Banyuwangi Regency, with 10 meters above ground level. Naturally, the wind speed is about 3.5 m/s to 4 m/s and the average temperature is 300° Kelvin. The potentially generated wind energy at a single point of coordinates is around 85.17 Wh.

scholarly journals Hydrotechnical construction, water engineering and water technologies: some modern issues and training of professionals

New Collegium ◽  
2021 ◽  
Vol 1 (103) ◽  
pp. 29-34
Author(s):  
O. Riazantsev ◽  
V. Shylin
Keyword(s):  
Alternative Energy ◽  
Nuclear Power ◽  
Power Plants ◽  
Hydraulic Engineering ◽  
Hydraulic Structures ◽  
Hydroelectric Power ◽  
Significant Deterioration ◽  
Groundwater Movement ◽  
Industrial Enterprises ◽  
Hydroelectric Power Plants

The article considers modern problems and problems that currently exist in hydraulic engineering and hydropower, problems of land and water resources. And also problems of training of experts. able to solve these problems Recently, the problems caused by existing large hydraulic structures are increasingly mentioned. The main problem is that the nodes of hydraulic structures often form artificial reservoirs of a large plane. It often happens that the depths of reservoirs are insignificant. This situation is very unsatisfactory because the land is used irrationally. which is a valuable resource and has a high cost and can be used effectively for agriculture. Creation of hydraulic structures, complexes of hydraulic structures significantly change the hydrological, biological. salt and thermal regimes of the river on which they are built, the regime of groundwater movement, cause climate change in the surrounding areas. Cascades of hydraulic structures have a special influence. As an example, we can cite the Dnieper cascade of hydroelectric power plants and compare the area of its reservoirs and the amount of electricity generated by its power plants with the world's largest hydroelectric power plants. In addition, shallow water bodies cause a significant deterioration in water quality. And since reservoirs are often a source of water supply for settlements and industrial enterprises, this situation is controversial. Intensive construction of hydraulic structures and their complexes took place during the twentieth century, many of them exhausted their resources and needed either reconstruction or decommissioning. The reasons for this state of affairs are the development of technology, the emergence and development of other alternative energy sources for thermal and nuclear power plants, other than hydraulic. Also, since the construction of many buildings, approaches to determining their profitability and efficiency have changed. Aspects of training specialists in hydraulic engineering and water engineering, able to solve these problems of the industry today, and those that will face them in the near future are considered. The ability of a competent professional to anticipate the consequences of any action must be an integral part of it. Attention is drawn to the need to apply conceptually new approaches to solving problems of construction of new hydraulic and hydropower facilities, operation and reconstruction of existing facilities.

scholarly journals ASSESSMENT OF THE IMPACT OF CONSTRUCTION OF A SMALL HYDROELECTRIC POWER STATIONON THE QUALITY OF ATMOSPHERIC AIR

2020 ◽  
Vol 1 (5) ◽  
pp. 202-206
Author(s):  
B.M. Khuchunaev ◽  
◽  
А. Tashilova ◽  
L. A. Kesheva ◽  
N. V. Teunova ◽  
...  
Keyword(s):  
Power Plants ◽  
Fossil Fuels ◽  
Renewable Energy Sources ◽  
Point Of View ◽  
Environmental Damage ◽  
Hydroelectric Power ◽  
Negative Consequences ◽  
Initial State ◽  
Hydroelectric Power Plants ◽  
The Impact

Environment – a set of components of the natural environment, natural and natural-anthropogenic objects, as well as anthropogenic objects. When carrying out any construction work, it is necessary to assess the impact of emissions of pollutants on the environment. One of the features of the energy sector at the beginning of the 21st century is the strict regulation of its further development with the requirements of preserving a favorable environment and preventing global pollution. This determines the trend towards an increasing role of renewable energy sources and, first of all, the most efficient hydropower. In the world, small energy began to develop in recent decades, this is mainly due to the desire to avoid environmental damage caused by reservoirs of large hydroelectric power plants, with the ability to guarantee energy supply in isolated and inaccessible areas. The creation of small hydroelectric power plants instead of small power plants operating on fossil fuels leads to a significant improvement in the air basin. This article provides an assessment of the ecological state of the territory from the point of view of the possibility of construction of the object and a preliminary qualitative forecast of possible changes in the environment during the implementation of the planned construction works and its negative consequences. Based on the analysis of the initial state of the environment and the forecast of its resistance to man-made impacts, the assessment of the possible impact of the construction object on the environment in accordance with the requirements for environmental documentation was carried out.

scholarly journals Comparative analysis of renewable energy development in the Republic of Buryatia (Russia) and Mongolia

2021 ◽  
Vol 885 (1) ◽  
pp. 012015
Author(s):  
A G Badmaev
Keyword(s):  
Alternative Energy ◽  
Power Plants ◽  
Green Energy ◽  
Fuel Oil ◽  
Hydroelectric Power ◽  
Coal Fuel ◽  
Infrastructure Investments ◽  
The Republic ◽  
Low Efficiency

Abstract The constantly growing demand for electricity and relatively small energy capacities are forcing the Republic of Buryatia (to a greater extent) and Mongolia, which are limited in some types of economic activity, to look for new sources of energy. One of these restrictions is the ban on the construction of hydroelectric power plants on rivers of the Lake Baikal basin. Therefore, Buryatia and Mongolia have taken the path of building environmentally friendly power plants and have succeeded in many ways. Despite the high costs of setting up clean power plants, infrastructure investments in alternative energy are long-term and expected to be profitable. Investors (including foreign ones) placing their money in a seemingly low-profit project, having long-term expectations. Competent investors do not run after “quick money”, realising that the return period of the constructed power plants will be long, as at the moment of development they have a relatively low efficiency. Despite the criticism of some researchers [1], they invest in green energy, modern infrastructure and a future without emissions (CO2, NO2, SO2 and other gases) from burning coal, fuel oil and firewood. Other experts see in the development of alternative energy a great potential [2-5], refuting arguments of critics about high cost of electricity [6].

scholarly journals Design and Construction of Single Phase Radial Flux Permanent Magnet Generators for Pico hydro Scale Power Plants Using Propeller Turbines in Water Pipes

2020 ◽  
Vol 188 ◽  
pp. 00006
Author(s):  
Eko Yohanes Setyawan ◽  
Yusuf Ismail Nakhoda ◽  
Awan Uji Krismanto ◽  
Lalu Mustiadi ◽  
Erkata Yandri ◽  
...  
Keyword(s):  
Power Plant ◽  
Power Plants ◽  
Permanent Magnets ◽  
Water Pressure ◽  
Hydroelectric Power Plant ◽  
Small Scale ◽  
Hydroelectric Power ◽  
Special Profile ◽  
Water Turbine ◽  
Main Components

Pico hydro or a small scale hydroelectric power plant is used as the rotating energy of the generator. Pico hydro is a hydroelectric power plant that has a power of less than 5 kW. Technically, Pico hydro has three main components namely water, turbine and generator. Turbine type propeller reaction has a special profile that causes a decrease in water pressure during the blades. This pressure difference exerts force on the blade so that the runner (rotating part of the turbine) can rotate. Permanent magnets are used to produce magnetic flux. Permanent magnets used are rare-eatrhrod magnet material, neodymium-iron-boron NdFeB with N35 type. The planned generator released is 36.85 V, 500 rpm, 50 hz. This designed water turbine has four blades which cannot change its angle. As for the measurement results produce a voltage of 35.1 V with a manufacturing efficiency of 95 %. Charging the battery voltage must be more than 12 V, therefore the generator must be turned at least 200 rpm with a voltage of 14 V to be used for charging batteries.

scholarly journals Design of thermal power plant modernization & rehabilitation model for the newmarket demands and challenges

2020 ◽  
pp. 188-188
Author(s):  
Martin Bricl ◽  
Jurij Avsec
Keyword(s):  
Alternative Energy ◽  
Power Plants ◽  
Fossil Fuels ◽  
Thermal Power ◽  
Model Parameters ◽  
Complete Model ◽  
Software Environment ◽  
Central Receiver ◽  
Receiver System ◽  
Rehabilitation Model

The article presents the model for the rehabilitation of existing conventional thermal power plants in order to lower the consumption of fossil fuels. Instead of them, the model uses an alternative energy source - sun irradiation. The proposed rehabilitation model is theoretically calculated and designed. The model in the software environment Matlab Simulink was developed, based on previous calculations and determined parameters. In this article, it is presented the combination of Clausius - Rankine process and solar central receiver system. The model enables simultaneous calculations of exit model parameters for the complete model, based on predetermined entering parameters of the model.

scholarly journals "A Generator": A Mini Hydroelectric Apparatus as Renewable Source of Energy

2018 ◽  
Vol 8 (3) ◽  
pp. 81
Author(s):  
Secil Satir ◽  
Yildirim B. Kestane ◽  
Sertan Dogru
Keyword(s):  
Power Plants ◽  
Mechanical Energy ◽  
Clean Energy ◽  
Green Energy ◽  
Green Economy ◽  
Electricity Production ◽  
Hydroelectric Power ◽  
Hydroelectric Power Plants ◽  
The Subject ◽  
Clean Energy Source

Abstract--The matter is considered in the scope of sustainability and initially the basis and content of the term is defined. Based on this definition, the qualities of water and water energy are inspected as water is one of the most important type of clean energy source. Water energy is a time-honored renewable energy whose use dates back to earliest periods in history. The subject titled “A Generator” is a small but significant support to environmental protection as it defines a patented object which generates energy from water with a mini apparatus. Protection of future lives of creatures and keeping them in infinite existence necessitate taking measures in advance. Concepts such as environment protection, sustainability, green energy, green economy etc. have also been under consideration by the UN since the 1970s. The subject is very comprehensive. This paper inspects as required hydroelectric power plants which produce clean energy and date back to ancient times. Water, as main source of hydroelectric power plants, is collected in proper basins and thus provided with potential energy. Water is then dropped from heights to trigger its kinetic energy and canalized to turbine wheels, moving which it turns kinetic/mechanical energy into electric power. This basic characteristic of water is evaluated in a mini apparatus this time. And an apparatus of unaccustomed size is obtained, which could support electricity production in household wet areas.

Design of a Novice Hydraulic Buoyant Force Engine

2014 ◽  
Vol 705 ◽  
pp. 71-78
Author(s):  
N. Mir-Nasiri ◽  
B. Almenov
Keyword(s):  
Alternative Energy ◽  
Fossil Fuels ◽  
Mechanical Energy ◽  
Water Reservoir ◽  
Combustion Products ◽  
Destructive Effect ◽  
Buoyant Force ◽  
Alternative Energy Sources ◽  
Belt Transmission ◽  
The Cost

In connection with the consumptive depletion of the earth and the destructive effect of emissions of combustion products on the environment, now all of humanity is in search for alternative energy sources. The proposed technology intends to produce electricity directly at the consumer location or in close vicinity to it by utilizing the concept of vertical buoyancy power generation in a still water reservoir and thus able to lower the cost of electricity and save the fossil fuels. The newly invented machine is able to converts the buoyance force energy into mechanical energy of shaft rotation, and thus into the electricity via rotary generator. The hydraulic buoyant force engine system includes two cylindrical pulleys with belt transmission mounted on the stationary frame that is submerged into the water. The belt carries the chain of elastic plastic airbags to generate the buoyance force. The empty and weightless airbags are driven first by the belt and pulleys system to the bottom of a water reservoir where they are filled with the air delivered by the compressor and then the bulged bags and thus connected belt are driven up by the buoyant force. As a result the belt and shaft of the connected to the upper pulley generator will be constantly driven by the buoyant force. The paper describes the details of the engine construction, the amount of power generated by the engine as a function of the reservoir depth and the power of an air compressor as well as advantages of such engine installations and their impact on the society.

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