scholarly journals ANALISIS PENGARUH JUMLAH SUDU TERHADAP EFISIENSI TURBIN PELTON DENGAN TEKANAN KONSTAN

Teknosia ◽  
2021 ◽  
Vol 1 (1) ◽  
pp. 36-42
Author(s):  
Een Tonadi
Keyword(s):  
Renewable Energy ◽  
Electricity Generation ◽  
Constant Pressure ◽  
Renewable Energy Sources ◽  
Turbine Rotor ◽  
Power Coefficient ◽  
Energy Sources ◽  
Rotor Rotation ◽  
Pelton Turbine ◽  
Torque Coefficient

One of the renewable energy sources that can be used for electricity generation is the Pelton turbine. The purpose of this study was to determine the effect of the number of blades on the efficiency of a Pelton turbine with constant pressure. This research was conducted at the Unihaz mechanical engineering laboratory by varying the number of blades, namely 9 blade turbines and 12 blades. Tests were carried out by giving load gradually to the turbine until the turbine rotor rotation stopped rotating. The results show that in the turbine test with blades 9 the maximum rotation achieved is 698.2 rpm and the maximum rotor rotation is 714.5 rpm at blade 12. Likewise, the torque coefficient and power coefficient achieved by the turbine with 12 are greater when compared to the 9 blades. Meanwhile, the efficiency that can be achieved by turbines with 9 blades is 71% and at 12 blades is 79%. From this it can be concluded that the number of blades affects the rotation, torque coefficient, power coefficient and efficiency of the Pelton turbine with constant pressure.

scholarly journals Assessment of on-site steady electricity generation from renewable energy sources in Chile

2019 ◽  
Vol 158 ◽  
pp. 1099-1104
Author(s):  
Luis Ramirez Camargo ◽  
Javier Valdes ◽  
Yunesky Masip Macia ◽  
Wolfgang Dorner
Keyword(s):  
Renewable Energy ◽  
Electricity Generation ◽  
Renewable Energy Sources ◽  
Energy Sources

scholarly journals Croatia's rural areas - renewable energy based electricity generation for isolated grids

2014 ◽  
Vol 18 (3) ◽  
pp. 731-742 ◽  
Author(s):  
Sonja Protic ◽  
Robert Pasicko
Keyword(s):  
Renewable Energy ◽  
Rural Areas ◽  
Electricity Generation ◽  
Renewable Energy Sources ◽  
Interdisciplinary Approach ◽  
Energy Sources ◽  
Electricity Grid ◽  
The Public ◽  
Balkan States ◽  
Supply Systems

Several Western Balkan states face the consequences of the Yugoslavian war, which left hometowns with dilapidated electricity grid connections, a high average age of power plant capacities and low integration of renewable energy sources, grid bottlenecks and a lack of competition. In order to supply all households with electricity, UNDP Croatia did a research on decentralized supply systems based on renewable energy sources. Decentralized supply systems offer cheaper electricity connections and provide faster support to rural development. This paper proposes a developed methodology to financially compare isolated grid solutions that primarily use renewable energies to an extension of the public electricity network to small regions in Croatia. Isolated grid supply proves to be very often a preferable option. Furthermore, it points out the lack of a reliable evaluation of non-monetizable aspects and promotes a new interdisciplinary approach.

scholarly journals Development of a Micro grid with Renewable Energy Sources with Feedback Controller

2019 ◽  
Vol 8 (11) ◽  
pp. 2014-2018
Keyword(s):  
Renewable Energy ◽  
Electricity Generation ◽  
Low Cost ◽  
Renewable Energy Sources ◽  
Electrical Power ◽  
Energy Sources ◽  
Military Operations ◽  
Urban Centers ◽  
Industrial Projects ◽  
Micro Grid

To make micro grid with renewable energy and to over come the technical challenges and economy base and policy and regulatory challenges . From the natural wastage we can generate the Electricity. Thus, the Electrical Power or Electricity is available with a low cost and pollution free to anyplace in the world at all times. This process divulge a unequaled step in electricity generation and this type of generation is maintain the ecological balance. We can have an uninterrupted power supply irrespective of the natural condition without any kind of environmental pollution. More influence this process relent the less production cost for electricity generation. Micro grids have long been used in remote areas to power off-grid villages, military operations or industrial projects. But increasingly they are being used in cities or towns, in urban centers. Here we try a proto type of micro grid with renewable energy sources.

Analyzing the Efficiency of Renewable Energy Sources in Terms of Electricity Generation

2021 ◽  
pp. 155-176
Author(s):  
Talip Arsu
Keyword(s):  
Renewable Energy ◽  
Geothermal Energy ◽  
Energy Supply ◽  
Electricity Generation ◽  
Renewable Energy Sources ◽  
Biomass Energy ◽  
Energy Sources ◽  
Data Envelopment ◽  
Efficiency Determination ◽  
Energy Supply Security

Electricity generation, one of the renewable energy sources (RES), delivers a solution for various problems such as energy efficiency, energy supply security, reducing foreign dependency, and especially, environmental concerns. However, the solutions provided for these problems bring along the question of which RESs are produced more effectively. Therefore, in this research, RESs used for electricity generation in Turkey were analyzed by using generation data to show which one is more effective. Bi-objective multiple-criteria data envelopment analysis (BiO-MCDEA) method, a goal programming-based efficiency determination method, was used for the efficiency analysis conducted for five years between the years of 2014 and 2018. As a result of the analysis, geothermal energy came into prominence as the most effective RES for all of the years included in the solution. Geothermal energy was followed by biomass energy, wind energy, hydroelectric, and solar energy, respectively.

scholarly journals A Smart Adaptive Switching Module Architecture Using Fuzzy Logic for an Efficient Integration of Renewable Energy Sources. A Case Study of a RES System Located in Hulubești, Romania

2020 ◽  
Vol 12 (15) ◽  
pp. 6084
Author(s):  
Simona-Vasilica Oprea ◽  
Adela Bâra ◽  
Ștefan Preda ◽  
Osman Bulent Tor
Keyword(s):  
Fuzzy Logic ◽  
Renewable Energy ◽  
Power Systems ◽  
Electricity Generation ◽  
Renewable Energy Sources ◽  
Storage System ◽  
Weather Conditions ◽  
Energy Sources ◽  
Fuzzy Logic Systems

Electricity generation from renewable energy sources (RES) has a common feature, that is, it is fluctuating, available in certain amounts and only for some periods of time. Consuming this electricity when it is available should be a primary goal to enhance operation of the RES-powered generating units which are particularly operating in microgrids. Heavily influenced by weather parameters, RES-powered systems can benefit from implementation of sensors and fuzzy logic systems to dynamically adapt electric loads to the volatility of RES. This study attempts to answer the following question: How to efficiently integrate RES to power systems by means of sustainable energy solutions that involve sensors, fuzzy logic, and categorization of loads? A Smart Adaptive Switching Module (SASM) architecture, which efficiently uses electricity generation of local available RES by gradually switching electric appliances based on weather sensors, power forecast, storage system constraints and other parameters, is proposed. It is demonstrated that, without SASM, the RES generation is supposed to be curtailed in some cases, e.g., when batteries are fully charged, even though the weather conditions are favourable. In such cases, fuzzy rules of SASM securely mitigate curtailment of RES generation by supplying high power non-traditional storage appliances. A numerical case study is performed to demonstrate effectiveness of the proposed SASM architecture for a RES system located in Hulubești (Dâmbovița), Romania.

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