Application of Savonius Rotor for Hydrokinetic Power Generation

2019 ◽  
Vol 142 (1) ◽  
Author(s):  
Oying Doso ◽  
Sarsing Gao
Keyword(s):  
Power Generation ◽  
Energy Demand ◽  
Energy Requirement ◽  
Electrical Energy ◽  
Vertical Axis ◽  
Electricity Production ◽  
Water Current ◽  
Technological Advancement ◽  
Power Sources ◽  
Savonius Rotor

Abstract Technological advancement is specifically identified by the usage of energy. The energy requirement is increasing because of the exponential population rise, increased industrial activities, and subsequent accelerated economic activities in both urban and suburban areas. The traditional power sources are becoming unsustainable as energy demand and induction of new sources for augmenting the energy need are lopsided. Additionally, traditional energy sources cause pollution, natural hazards, and more importantly, it is uneconomical. Due to these reasons, it becomes compelling to look for alternative sources of energy. Hydropower generation is reliable, non-polluting to a large extent, and a cheaper source of electrical energy. However, the conventional large hydropower projects, especially with reservoir components, are being opposed worldwide for social, environmental, economic, and safety reasons. Therefore, electricity production from free-flowing water may present a viable choice. Here, the free-flowing river water current is used to drive vertical-axis turbines preferably, Savonius rotors which are ideally built for wind energy conversion systems (WECS). The rotor is directly coupled to electric generators, and the scheme presents a typical variable voltage and variable frequency system similar to that of WECS except that the working force is due to water rather than wind. The use of the Savonius rotor for hydrokinetic power generation is uncommon; however, increased exploitation of this methodology may help in augmenting future energy need. This paper reviews the Savonius rotor and its possible application for hydrokinetic power generation; the merits and demerits of such schemes are clearly outlined.

Review on Savonius Rotor for Harnessing Wind Energy

2012 ◽  
Vol 36 (6) ◽  
pp. 605-645 ◽  
Author(s):  
K. Golecha ◽  
M. A. Kamoji ◽  
S. B. Kedare ◽  
S. V. Prabhu
Keyword(s):  
Power Generation ◽  
Mechanical Energy ◽  
Electrical Energy ◽  
Vertical Axis ◽  
Performance Characteristics ◽  
Savonius Rotor ◽  
Water Pumping ◽  
Bladed Rotor ◽  
Rotor Shape ◽  
Starting Torque

Wind machines convert kinetic energy of the wind into usable form of mechanical energy or electrical energy. The Savonius rotor is a vertical axis wind machine which is simple in design. High starting torque characteristics make it suitable for standalone power generation as well as water pumping applications. This paper reviews the literature on the performance characteristics of the Savonius rotor. Multi-bladed rotor, multistage rotor, shape of the blade, use of deflecting plate, guide vanes and nozzle augmentation are several ways to enhance the performance characteristics. This review would help an engineer in building an improved Savonius rotor for a given application.

scholarly journals Prioritizing Energy Sources to Generate Electricity (Application of Fuzzy Logic)

2015 ◽  
Vol 10 (2) ◽  
pp. 414-421
Author(s):  
Bahareh Hashemlou ◽  
Hossein Sadeghi ◽  
Arashk Masaeli ◽  
Mohammadhadi Hajian ◽  
Shima Javaheri
Keyword(s):  
Natural Gas ◽  
Energy Demand ◽  
Power Plants ◽  
Fossil Fuels ◽  
Electrical Energy ◽  
Electricity Production ◽  
Fuzzy Preference Relations ◽  
Safety And Reliability ◽  
The Cost ◽  
Day By Day

Organizations, institutions, and different sectors of manufacturing, services and agriculture are constantly making decisions. Each of the aforementioned sectors, have strategies, tactics, and various functions that play a basic role in reaching the objectives. On the other hand, energy demand in developing countries is increasing day by day. The exact calculation of the cost per unit of electricity generated by power plants is not easy. Therefore, this study according to four sources of natural gas, nuclear energy, renewable energy and other fossil fuels other than natural gas that are used in a variety of electricity production plants is trying to clarify the ranking of generation electricity approach using "fuzzy preference relations" analysis. Accordingly, three models were used and the results showed that natural gas, with regard to the four criteria of low investment cost, low power, lack of pollution and the safety and reliability of electrical energy has priority over other alternatives. Full preferred model results also suggested that the energy of natural gas, renewable energies, nuclear and other fossil fuels should be considered in a priority for power generation. Sensitivity analysis results moreover demonstrated that the above models are not affected by the threshold values ​​and the full stability of the models is observed.

Dynamics of Thermal Energy Storage in Integrated Energy Systems With On-Site Power Generation

2002 ◽  
Author(s):  
Ali A. Jalalzadeh-Azar ◽  
Ren Anderson ◽  
Steven J. Slayzak ◽  
Joseph P. Ryan
Keyword(s):  
Power Generation ◽  
Energy Storage ◽  
Thermal Energy ◽  
Thermal Energy Storage ◽  
Energy Requirement ◽  
Energy Systems ◽  
Electrical Energy ◽  
Energy Availability ◽  
Packed Beds ◽  
Integrated Energy Systems

Integrated energy systems (IES) incorporating on-site power generation provide opportunities for improving reliability in energy supply, maximizing fuel efficiency, and enhancing environmental quality. To fully realize these attributes, optimum design and dynamic performance of integrated systems for a given application have to be pursued. Whether referred to as cogeneration, combined heat and power (CHP) or building cooling, heating, and power (BCHP), integrated energy systems manifest effective energy management aimed at closing spatial and temporal gaps between demand and supply of electrical and thermal energy. This is accomplished by on-site power production and utilization of the resulting thermal energy availability for thermally-driven technologies including desiccant dehumidification, absorption cooling, and space heating. The notion that the demands for thermal and electrical energy are not always congruent and in phase signifies the importance of considering thermal energy storage (TES) for integration. This paper explores the potential impact of implementing TES technology on the overall performance of integrated energy systems from the first- and second-law perspectives. In doing so, the dynamics of packed bed thermal energy storage systems for potential energy recovery from the exhaust gas of microturbines are investigated. Using a validated simulation model, the transient thermal response of these TES systems is examined via parametric analyses that allow variation in the thermal energy availability and physical characteristics of the packed beds. The parasitic electrical energy requirement associated with the pressure losses in the packed beds is included in the performance assessment. The results of this study are indicative of the promising role of TES in integrated energy systems.

scholarly journals Development of Flapping Panel Vertical Axis Wind Turbine

2019 ◽  
Vol 9 (1) ◽  
pp. 2119-2122
Keyword(s):  
Power Generation ◽  
Wind Turbine ◽  
Power Output ◽  
Renewable Energy Sources ◽  
Electrical Energy ◽  
Vertical Axis ◽  
Vertical Axis Wind Turbine ◽  
Considerable Part ◽  
Ansys Fluent ◽  
Generation Capacity

In a developing nation like India, electricity has become one of the most important basic needs nowadays. Coal and gasoline based power generation capacity stands at 71% in India, which contributes to a considerable part of air pollution. There are various renewable energy sources which are pollution free, one among them is the wind energy. So the main objective of the project is to facilitate pollution free power generation for individual purpose. In order to understand the problem and working, a flapping panel vertical axis wind turbine was designed. The main advantage of using a vertical axis wind turbine is that it need not pointed towards the wind and also vertical axis wind turbine is more comfortable to erect for domestic purposes. The flapping panel wind turbine is designed using solidworks software and analysed using Ansys Fluent. By making use of the wind, the flapping panels attached to the shaft rotate and the rotor is connected to the permanent magnet electricity generator (PMG). The PMG converts the Kinetic energy of the rotor shaft into electrical energy. The PMG we have used has the capacity of producing maximum power at 1200rpm. On calculating theoretically, the power output is found to be 8W for the rotation of 76.39 rpm and for 1200rpm the power output is calculated to be 125W. The entire wind turbine setup is compact in size and can be easily mounted and erected.

scholarly journals The Investigation of Savonius Type and Darrieus H Type Wind Turbine Simulation with Wind Speed Variable

2021 ◽  
Vol 1 (2) ◽  
pp. 19-26
Author(s):  
Wibby Aditya Putra Utama ◽  
Yohandri Bow ◽  
M. Syahirman Yusi
Keyword(s):  
Renewable Energy ◽  
Wind Speed ◽  
Wind Turbine ◽  
Energy Demand ◽  
Renewable Energy Sources ◽  
Electrical Energy ◽  
Vertical Axis ◽  
Renewable Energy Resources ◽  
Vertical Axis Wind Turbine ◽  
Fan Speed

The demand for electrical energy that continues to increase along with the advancement of civilization and also the increasing number of people as well as the reduced level of fulfillment and availability of non-renewable energy sources, it is necessary to have renewable energy resources that capable of fulfill these energy demand in a more environmental friendly. One of the natural energies that we can use is wind energy, which is easy to get and lasts continuously. This research examines the comparison of the power generated from the vertical axis wind turbine savonius type and darrieus H type. The wind that use in this research get from from the fan. The test is doing by varying the wind speed by adjusting the fan speed. The fan is directed to the wind turbine to rotate the wind turbine. To measure the wind speed produced by the fan, a digital anemometer is used. The result of this research is the relation data of voltage to rpm and voltage to wind speed of wind turbine.

scholarly journals The Study of Electrical Energy Consumption in Cascaded Pumps for Pipeline Operations

2021 ◽  
pp. 43-59
Author(s):  
Eliazar Elisha Audu
Keyword(s):  
Energy Demand ◽  
Oil And Gas ◽  
Critical Infrastructure ◽  
Energy Requirement ◽  
Pump Energy ◽  
Electrical Energy ◽  
Oil And Gas Industry ◽  
Petroleum Products ◽  
Bernoulli’S Equation ◽  
Pump Station

Pumps are critical infrastructure in the Oil and Gas industry, and have been widely used in pipeline transportations of petroleum products. The electrical energy needed by a pump to meet the minimum pipeline operational requirement plays an important role in the overall cost and evaluation of pumping systems performance, which has become an important issue in pump energy management and pump station designs. This paper provides a quantitative and analytical method using Bernoulli’s equation for studying energy dependence between two pumps (Booster and Mainline pumps) in series within a pump station as a function of pump’s head, flow-rate, and density. Using actual parameters from a pump station, the derived equations are validated on four different products. The densities of products are 1000 kg/cm3, 835 kg/cm3, 800 kg/cm3 and 660 kg/cm3 for Water, Automotive Gas Oil (AGO), Dual Purpose Kerosene (DPK), and Premium Motor Spirit (PMS) respectively. The results show that the energy requirement of the Booster pump is determined by the energy demand of the Mainline pump as a function of flowrate, density and pump’s head. The study is essential for developing energy saving strategy in pipeline operations and in electrical consideration when selecting the right electric motors for pumps in pump station design.

An Improved Methodology to Design Large-Scale Photovoltaic Power Plant

2017 ◽  
Vol 140 (1) ◽  
Author(s):  
Ali Durusu ◽  
Ali Erduman
Keyword(s):  
Power Plant ◽  
Case Studies ◽  
Social Life ◽  
Energy Demand ◽  
Power Plants ◽  
Large Scale ◽  
Electrical Energy ◽  
Optimal Number ◽  
Electricity Production ◽  
Pv Modules

A secure and reliable supply of energy is important for economic stability and even in social life. Increasing human population, industrialization, and rising living standards lead to increased electrical energy demand. Uncertainties in oil prices, shortage of fossil fuel reserves, and environmental pollution from conventional fuels leads solar energy as an alternative resource for electricity production. The share of installed photovoltaic (PV) capacity as a percent of total installed power generating capacity is increasing every year. In this study, an improved methodology to design large-scale PV power plant is proposed. The proposed methodology is performed for designing optimal configurations of PV power plants. The design methodology is performed using commercially available PV modules and inverters. In addition, solar radiation, ambient temperature, wind speed, shadow effect, and location and shape of plant field are taken into consideration as input parameters. The alternatives and parameters are evaluated with the purpose of minimizing the levelized cost of generated electricity (LCOE). The methodology includes the use of a genetic algorithm (GA) for determining the optimal number of PV modules and inverters, optimum tilt angle of PV modules, required installation area for the plant and optimum cable cross section and lengths. In the paper, the methodology is implemented, and case studies and results using pvsyst software for the same case studies are compared with each other.

scholarly journals Review of Specific Performance Parameters of Vertical Wind Turbine Rotors Based on the SAVONIUS Type

Energies ◽  
2021 ◽  
Vol 14 (7) ◽  
pp. 1962
Author(s):  
Scheaua Fanel Dorel ◽  
Goanta Adrian Mihai ◽  
Dragan Nicusor
Keyword(s):  
Rotor Blade ◽  
Energy Demand ◽  
Negative Impact ◽  
Experimental Tests ◽  
Electrical Energy ◽  
Vertical Axis ◽  
Green Energy ◽  
Performance Parameters ◽  
Wind Force ◽  
Research Activities

Increasing energy demand and environmental regulations around the world provide an adequate framework for developing methods of obtaining energy from renewable sources. Wind force is a resource with a high potential through which green energy can be obtained with no negative impact on the environment. Different turbine typologies have been developed, which can convert the wind force into mechanical and electrical energy through turbine rotational motion. Starting from the classic vertical-axis SAVONIUS rotor model, other models have been designed, which, according to the numerical studies and experimental test results, show higher performance parameters in operation. Such models present specific rotor blade geometries to achieve better operational results in terms of shaft torque and generated power. There are multiple research results from numerical analysis on virtual models or experimental tests that use rotor models in different constructive configurations aiming to improve operation performance. These research activities are related to the rotor blade number, the aspect and overlap ratio values, the blade profile geometry modification, the use of end plates connected to the rotor blades, curtain mounting solutions for directing the air flow on the active blade alone, and rotor constructive variants with deformable blades during operation. Some of the results obtained from the mentioned research activities are shown in this review for special rotor configurations whose performance results in terms of torque or power values are compared to the classical SAVONIUS model.

A Review of Two Patents Relating to Novel Energy Harvesting Techniques to Provide Electrical Power On-Board Gun-Fired Projectiles

2010 ◽  
Author(s):  
Jahangir Rastegar ◽  
Richard Murray
Keyword(s):  
Power Generation ◽  
Energy Harvesting ◽  
Mechanical Energy ◽  
Electrical Power ◽  
Electrical Energy ◽  
Harsh Environment ◽  
Logical Framework ◽  
Power Sources ◽  
Piezoelectric Elements ◽  
Harvesting Techniques

This is a review of two patents relating to electrical power generation on-board gun-fired munitions. The devices harvest mechanical energy from the motion of the projectile (e.g. the axial firing acceleration), and then convert the energy from mechanical to electrical using novel mechanisms and materials such as piezoelectric elements. The devices are particularly important for several reasons. Firstly, the devices are inherently safe because the root source of the electrical energy is the motion of the projectile; therefore no electrical energy can be produced until after the projectile is fired. Second, the devices have a much longer shelf-life than competing electrical power sources such as batteries. Finally, the devices are simple, rugged, and reliable making them ideal for the harsh environment on-board gun-fired projectiles. In addition to presenting the general approach, the logical framework of the patented embodiments is presented, especially with respect to the types of motion used for harvesting and the challenges presented by the varied magnitudes of those motions in different weapon platforms.

scholarly journals Comparative Analysis of Reliable, Feasible, and Low-Cost Photovoltaic Microgrid for a Residential Load in Rwanda

2020 ◽  
Vol 2020 ◽  
pp. 1-14
Author(s):  
Cyprien Nsengimana ◽  
Xin Tong Han ◽  
Ling-ling Li
Keyword(s):  
Energy Demand ◽  
Low Cost ◽  
Electricity Production ◽  
Residential Home ◽  
Generation Model ◽  
Power Sources ◽  
Electricity Cost ◽  
Renewable Power ◽  
Cost Of Energy ◽  
Residential Electricity

Photovoltaic microgrids provide free renewable energy solutions for Rwandans. Although solar technology keeps on its advancement, hydropower remains the principal power source in Rwanda. Other renewable power sources include wind and geothermal energies that are not yet fully exploited. Nonrenewable sources in Rwanda including methane, peat, thermal, and fuels are also used for providing energy solutions for the citizens. Rwanda Energy Group (REG) sets the energy strategic plan since 2015 for achieving the minimum of 512 MW of energy production in 2024/2025 to meet the total energy demand. The plan predicted 52% for grid-connected and 48% for off-grid (standalone) connections. The literature survey and data analysis collected on site were used to evaluate and determine the best cheaper microgrid model from the three comparison case studies for the household in Rwanda. The study focused on the economic power generation model mainly based on solar resources to minimize the electricity cost and provide income for the excess energy produced. Moreover, the study resulted in a low-cost (four times cheaper), reliable, and affordable grid-connected PV and battery microgrid model for a residential home with a minimum daily load of 5.467 kWh. The simulation results based on economic comparison analysis found the levelized cost of energy (LCOE) and net present cost (NPC) for each power-generated model by using Hybrid Optimization Model for Electric Renewable (Homer) pro software. The results show that the LCOE for electricity production by each of the Grid connected-PV-Battery system, Diesel GenSet-PV-Batteries, and PV-Batteries systems was 0.0645 US$/1 kWh, 1.38 US$/1 kWh and 1.82 US$/1 kWh, respectively, compared with 0.2621 US$/1 kWh, the current residential electricity price (2020) for Rwanda.

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