scholarly journals Tidal Energy Utilization of Larantuka Strait by Dual Tidal Turbines to Increase National Energy Resilience

2019 ◽  
Vol 2 ◽  
pp. 73-77
Author(s):  
Eko Soejianto ◽  
Khansa Hanifa Zahra ◽  
Suci Nur Hidayah
Keyword(s):  
Renewable Energy ◽  
Energy Demand ◽  
Energy Resource ◽  
Electrical Energy ◽  
Tidal Energy ◽  
Ocean Currents ◽  
Energy Utilization ◽  
Tidal Turbines ◽  
Tidal Turbine ◽  
The Government

Currently, renewable energy can only support 5% of national energy needs. Meanwhile, in 2035 renewable energy targeted to sustain 14% of total national energy demand. The proper way for optimizing the renewable energy is needed to actualize the target. Tidal energy as one of the potentials that are still being developed and need more attention from the government. Tidal can be used for natural energy resource since it has zero emission, produce big energy, and has no impact to weather. Larantuka Strait located in Flores island, Nusa Tenggara Timur province can produce tidal velocity up to 2.859 m/s with water density as much as 1.025 gr/cc.  In utilizing this energy, we use new innovation by using dual tidal turbines which placed at the foot of Palmerah Bridge. The construction of Palmerah Bridge is built both by the government of Flores Island and Adonara Island. Dual tidal turbines are more efficient than singl e turbine by reason of tidal that has passed through the first turbine can be used again for the second turbine. The using of the generator is meant to convert kinetic energy that produced by dual tidal turbines. To convert ocean currents into electrical energy optimally, it is necessary to plan turbine designs that are in accordance with the conditions of ocean currents and the surrounding environment such as current velocity, wind influences and so on. Horizontal-axis tidal turbine (HATTs) is one of the technologies that are being developed and tested in prototype form by several companies, an efficient blade design is very important for the success of the HATTs. The amount of turbine needs, in this case, is 15 turbines with each turbine’s length is 10 meters. The turbines installed in bridge’s column along 800 meters. Estimate electricity can be generated by the turbine is 1.48 Mega Watt (MW).

scholarly journals Present Situation of Electrical Energy Demand, Supply, Projection of Demand-supply and Renewable Energy Utilization and Progress

2020 ◽  
Author(s):  
Md Nazmul Islam
Keyword(s):  
Renewable Energy ◽  
Energy Consumption ◽  
Energy Demand ◽  
Electrical Energy ◽  
Present Situation ◽  
Energy Utilization ◽  
Economic Activities ◽  
Power Development ◽  
Per Capita ◽  
Renewable Energy Generation

<p>A brief overview of present electricity demand, supply, projection of them and renewable energy generation and progress has been presented in this paper. Electricity is the major source of power for most of the country's economic activities. According to the Bangladesh Power Development Board in July 2018, 90 percent of the population had access to electricity. However per capita energy consumption in Bangladesh is considered low. The country has a very limited energy reserve; small amounts of oil, coal and countable natural gas reserves. The country suffers an internal energy struggle, as about 88% of the country’s power producing thermal plants are gas-based. To solve this problem, renewable energy is being used.</p>

Application and Development of Renewable Energy: A Case Study of Solar Energy Utilization in Baoding, China

2010 ◽  
Author(s):  
Xutao Zhang ◽  
Yuefen Gao ◽  
Guohua Shi
Keyword(s):  
Renewable Energy ◽  
Solar Energy ◽  
Wind Power ◽  
Power Transmission ◽  
Energy Resource ◽  
Green Energy ◽  
Energy Utilization ◽  
High Tech ◽  
The Government ◽  
National Industry

As we know, more and more energy are required to meet the demands of society, and this has forced the government to review the economy and energy policies. The solar energy resource is abundant in China, which provides a good foundation with the utilization of solar energy. In China, there is a Silica Valley in Beijing, an Optics Valley in Wuhan, and also an Electricity Valley in Baoding. First, the only domestic national industry base of renewable energy and equipment is located in Baoding National New and High-tech Industry Zone. Secondly, there are great advantages on the photovoltaic industry, the wind power generation and the power transmission and transformation equipment, corresponded with the Yingli Green Energy Holding Company Limited, Zhong Hang Huiteng Wind Power Equipment Corporation Limited and Tian Wei Group Corporation Limited, respectively. Then it is a natural choice for the local government to develop the renewable energy in the readjustment of industry structures. This paper deals with the utilizations and prospects of solar energy.

scholarly journals Present Situation of Electrical Energy Demand, Supply, Projection of Demand-supply and Renewable Energy Utilization and Progress

2020 ◽  
Author(s):  
Md Nazmul Islam
Keyword(s):  
Renewable Energy ◽  
Energy Consumption ◽  
Energy Demand ◽  
Electrical Energy ◽  
Present Situation ◽  
Energy Utilization ◽  
Economic Activities ◽  
Power Development ◽  
Per Capita ◽  
Renewable Energy Generation

<p>A brief overview of present electricity demand, supply, projection of them and renewable energy generation and progress has been presented in this paper. Electricity is the major source of power for most of the country's economic activities. According to the Bangladesh Power Development Board in July 2018, 90 percent of the population had access to electricity. However per capita energy consumption in Bangladesh is considered low. The country has a very limited energy reserve; small amounts of oil, coal and countable natural gas reserves. The country suffers an internal energy struggle, as about 88% of the country’s power producing thermal plants are gas-based. To solve this problem, renewable energy is being used.</p>

scholarly journals Renewable Energy Potentials along the Bay of Bengal due to Tidal Water Level Variation

2018 ◽  
Vol 147 ◽  
pp. 05008
Author(s):  
Myisha Ahmad ◽  
G. M. Jahid Hasan ◽  
H. M. Mohaymen Billah Chy ◽  
Gazi Masud Md. Mahenoor
Keyword(s):  
Renewable Energy ◽  
Potential Energy ◽  
Energy Demand ◽  
Renewable Energy Sources ◽  
Energy Resource ◽  
Tidal Energy ◽  
Energy Sources ◽  
Tidal Variation ◽  
Energy Estimation ◽  
Resource Exploration

The projected increase in energy demand coupled with concerns regarding present reliance on fossil fuel and associated environmental concerns had led to increased interest in exploiting renewable energy sources. Among different renewable energy sources, tidal energy is unique and most suitable because of its predictable nature and capability to ensure supply security. Tide consists of both kinetic and potential energy which can be converted to electricity using well-proven technology. The potential energy of tides - the principal focus of the study, is stored due to rise and fall of the sea level. Head difference created due to tidal variation between basin side and sea side of a barrage stores potential energy which is converted into fast-moving water that rotates turbine and generates electricity. Bangladesh with its long coastline has promising prospects of tidal energy resource development. The study focuses on tidal energy resource exploration and exploitation along several competent locations of the Bengal coastline. Tidal records of flood and ebb tide of these locations are analyzed to calculate the potential energy. Finally, available potential techniques of energy extraction are evaluated for annually generated energy estimation. This study investigates the prospect and utilization of tidal energy concept and reviews the possibilities and opportunities of employment of the technology for sustainable development and climate change mitigation in context of Bangladesh.

Future of Renewable Energy Use in Pakistan in the Context of Agrifood-Energy Nexus

2020 ◽  
Vol 15 (3) ◽  
pp. 49-56
Author(s):  
Ramchandra Bhandari ◽  
Bhunesh Kumar
Keyword(s):  
Renewable Energy ◽  
Energy Consumption ◽  
Energy Demand ◽  
Crop Production ◽  
Energy Use ◽  
Agricultural Sector ◽  
Energy Resource ◽  
Electrical Energy ◽  
Vital Role ◽  
Poultry Production

 Pakistan is facing a serious energy supply problem due to lack of energy that results in a shortfall of power supply from 6–10 hours/day, especially outside the big cities. The energy demand is expected to increase in every sector such as industrial, agricultural, household and transport in the years ahead due to population growth, economic development and modern lifestyle. Agricultural sector plays a vital role in the country’s economy contributing around 20% share in GDP. At present the direct energy consumption in the agricultural sector is 2%. To avoid a worse situation in the future years renewable energy resource potential exploitation is needed. This requires also proper planning and implementation of energy policies. In this work present and future electrical energy consumption, demand and supply gap of the country is presented. A sustainable agricultural productive system has become a major priority to maintain food security for the increasing population. Both direct and indirect electrical and energy consumption has emerged in agrifood sector with farm machinery, production, packing and transport of fertilizers, food processing and transport, crop production, animal product production, poultry production, etc. In addition to this excel based model is developed to integrate the renewable energy into the agrifood – energy nexus supply chain and to fulfil the current and future energy demand of the sector.

Potential Area to Harness the Tidal Energy at West Coast Peninsular Malaysia

2015 ◽  
Vol 785 ◽  
pp. 637-641
Author(s):  
Mohd Zaifulrizal Zainol ◽  
Haziatul Najihah Zana Rahim ◽  
Wardiah Dahalan ◽  
Atzroulnizam Abu ◽  
Muhamad Fadli Ghani ◽  
...  
Keyword(s):  
Power Generation ◽  
Renewable Energy ◽  
West Coast ◽  
Negative Impact ◽  
Average Power ◽  
Energy Resource ◽  
Tidal Energy ◽  
Peninsular Malaysia ◽  
Potential Region ◽  
Tidal Turbine

Malaysia nowadays depends heavily on conventional energy resource for generating electricity and transportation. This will give negative impact and trigger other problems if not well managed. Therefore, it is very important to increase the use of renewable energy especially the tidal energy as the tidal energy is more predictable and reliable renewable energy source. A kinetic energy produced by the tidal differences will be used to generate electricity and involves the use of a tidal turbine. There are two approaches that are being used to harness the tidal energy for the generation of electricity which are barrage approach and tidal stream approach. This paper identify the potential region along west coast of peninsular Malaysia that has higher potential power generation for harnessing tidal energy and study which approach suitable to be applied. From the results, show that the highest potential power generation for harnessing tidal energy is at Pelabuhan Klang with the average power availability is 591.19kW while the lowest is at Tanjung Keling with the average potential power generation is 52.75kW.

scholarly journals A Sizing Method for PV–Battery–Generator Systems for Off-Grid Applications Based on the LCOE

Energies ◽  
2021 ◽  
Vol 14 (7) ◽  
pp. 1988
Author(s):  
Ioannis E. Kosmadakis ◽  
Costas Elmasides
Keyword(s):  
Renewable Energy ◽  
Energy Demand ◽  
Renewable Energy Sources ◽  
Temporal Distribution ◽  
Electrical Energy ◽  
Optimal Number ◽  
Diesel Generator ◽  
Levelized Cost Of Electricity ◽  
Sufficient Power ◽  
Battery Energy

Electricity supply in nonelectrified areas can be covered by distributed renewable energy systems. The main disadvantage of these systems is the intermittent and often unpredictable nature of renewable energy sources. Moreover, the temporal distribution of renewable energy may not match that of energy demand. Systems that combine photovoltaic modules with electrical energy storage (EES) can eliminate the above disadvantages. However, the adoption of such solutions is often financially prohibitive. Therefore, all parameters that lead to a functionally reliable and self-sufficient power generation system should be carefully considered during the design phase of such systems. This study proposes a sizing method for off-grid electrification systems consisting of photovoltaics (PV), batteries, and a diesel generator set. The method is based on the optimal number of PV panels and battery energy capacity whilst minimizing the levelized cost of electricity (LCOE) for a period of 25 years. Validations against a synthesized load profile produced grid-independent systems backed by different accumulator technologies, with LCOEs ranging from 0.34 EUR/kWh to 0.46 EUR/kWh. The applied algorithm emphasizes a parameter of useful energy as a key output parameter for which the solar harvest is maximized in parallel with the minimization of the LCOE.

scholarly journals The Importance of Fault Prediction in a Tidal Turbine. Misalignment and Cracks in the Shaft

Proceedings ◽  
2018 ◽  
Vol 2 (22) ◽  
pp. 1368
Author(s):  
Beatriz F. Cal ◽  
Pedro Fraga
Keyword(s):  
Failure Prediction ◽  
Ocean Currents ◽  
Fault Prediction ◽  
Early Failure ◽  
Tidal Turbines ◽  
Early Appearance ◽  
Rapid Changes ◽  
Tidal Turbine

This study is focused on the early failure prediction of underwater Tidal Turbines. These types of turbines undergo strong torques due to ocean currents which also causes rapid changes in direction and speed which subjected to important loads and misalignments. The main objective of this study is therefore to analyse the response to the constant vibration produced by those misalignments and early appearance of cracks in this shaft.

A French Application Case of Tidal Turbine Certification

2016 ◽  
Author(s):  
Stéphane Paboeuf ◽  
Laura-Mae Macadré ◽  
Pascal Yen Kai Sun
Keyword(s):  
Renewable Energy ◽  
Water Current ◽  
Support Structure ◽  
Design Assessment ◽  
Certification Scheme ◽  
Tidal Turbines ◽  
Marine Energy ◽  
Certification Procedure ◽  
Tidal Turbine

Tidal turbines are emerging technologies offering great potential for the harnessing of a renewable and predictable oceanic resource. However, exploitation at sea comes with significant design, installation, grid connection, and maintenance operations challenges. Consequently, guidelines and standards are required to ensure safety, quality, performance and accelerate tidal turbines development and commercialisation. Standardisation is also a necessity to support and improve safety and confidence of a wide range of Marine Renewable Energy (MRE) stakeholders such as designers, project operators, investors, insurers or final users. There are undergoing developments on guidelines, standards and certification systems within the International Electrotechnical Commission (IEC) Technical Committee TC 114 “Marine energy - Wave, tidal and other water current converters” and the IEC Renewable Energy “Marine Energy - Operational Management Committee” (IECRE ME – OMC). However, as the tidal energy concepts are only at the demonstration stage, only few guidelines and no dedicated certification scheme has been published so far within this organization, which guarantee an international, independent, non-governmental and consensus-based elaboration process. The aim of this paper is to present a proposal of certification methodology, developed by Bureau Veritas for the design assessment of current and tidal turbines, and its application to a French case study. This certification procedure was developed within the French research project Sabella D10 funded by ADEME and is published in the Bureau Veritas guideline NI603 “Current & Tidal Turbines”. The suggested certification procedure addresses prototype, component, type and project certification. Main objective, scope, intermediary steps to be completed and resulting certificates will be detailed for each certification scheme, as well as their interactions. This methodology will be illustrated by the case study on the Sabella D10 prototype, a French tidal turbine installed in 2015 in the Fromveur Passage, off Ushant Island. Sabella D10 is a 1 MW tidal turbine fully submerged laid on the seabed with a horizontal axis and 6 blades. It is the first French tidal turbine producing electricity and connected to the electrical network. The Sabella D10 case study will focus on prototype certification and computations performed for support structure and blades. The paper will describe the load cases that have been considered, the review procedure for the support structure and the blades design assessment, including description of a streamlined method for basic design and a detailed method for final design. In conclusion, the next steps will be introduced to continue the certification developments of tidal and current turbines.

scholarly journals Portable Generator Thermoelectric Termonitoring IoT sebagai Pembangkit Termal di Daerah 3T (Terdepan, Terluar dan Tertinggal)

Electrician ◽  
2021 ◽  
Vol 15 (1) ◽  
pp. 54-57
Author(s):  
Rahmat Bayu Setiawan ◽  
Panji Adhi Pradana ◽  
Muhammad Abdul Fattah ◽  
Khairudin Khairudin
Keyword(s):  
Renewable Energy ◽  
Power Plant ◽  
Electrical Energy ◽  
Thermoelectric Generators ◽  
Simulation Data ◽  
Power Generator ◽  
Testing Data ◽  
Micro Power ◽  
Simulation Results ◽  
The Government

Intisari — Energi terbarukan adalah sumber energi yang dihasilkan secara alamiah dan akan terus berkelanjutan jika dikelola dengan baik. Indonesia adalah negara yang terkenal dengan potensi alam yang sangat melimpah. Banyak sumber daya alam yang perlu perhatian dari pemerintah untuk dikembangkan. Pengaplikasian alat yang dapat dikembangkan yaitu di antaranya yaitu melalui termoelektrik yang dipantau melalui IoT secara portable sehingga dapat menjangkau daerah 3T (Tertinggal, Terdepan dan Terluar). Prototipe penghasil energi terbarukan dan ramah lingkungan dalam sistem pembangkit mikro, yang dalam hal ini portable generator termoelektrik termonitoring IoT sebagai pembangkit termal dapat dikembangkan untuk mengatasi pemerataan dan ketersediaan energi listrik di daerah 3T (terdepan, terluar dan tertinggal) berbasis kearifan lokal dapat didesain menggunakan 3-D INVENTOR dan hasil simulasi dari sisi material menggunakan ANSYS serta hasil simulasi dari output yang dihasilkan menggunakan MATLAB. Pembuatan prototipe sesuai dengan konsep dan desain yang telah didapatkan sebelumnya dengan menggunakan softwareMicroroft Visio, software INVENTOR dan evaluasi hasil simulasi dengan menggunakan software MATLAB. Hasil dari pembuatan prototipe akan dilakukan pengujian tingkat gradien suhu terbaik untuk menghasilkan energi optimal, sehingga didapatkan data optimal dalam menyimulasikan micro power plant tersebut. Berdasarkan simulasi yang dilakukan didapatkan data dengan daya minimum sebesar 6,215 W selama 2 menit dan daya maksimum sebesar 19,932 W selama 8 menit Kata kunci — Energi, IoT, Portable Generator ThermoelectricAbstract — Renewable energy is a source of energy that is generated naturally and will be sustainable if managed properly. Indonesia is a country known for its abundant natural potential. There are many natural resources that need attention from the government to be developed. The development of this power generator tool really requires an understanding of the design of the tools used to get optimal results. The application of tools that can be developed is through thermoelectricity which is monitored via IoT in a portable manner so that it can reach 3T areas (Disadvantaged, Frontier and Outermost). Prototypes for producing renewable and environmentally friendly energy in micro-generating systems, in which IoT-monitored portable thermoelectric generators as thermal generators can be developed to address the distribution and data of electrical energy in 3T (frontier, outermost and disadvantaged) areas based on local wisdom can be designed using 3 -D INVENTOR and simulation of materials using ANSYS and simulation of the output generated from MATLAB. Making prototypes in accordance with the concepts and designs that have been obtained previously using Microroft Visio software, INVENTOR software and evaluation of simulation results using MATLAB software. The results of the prototyping will be tested for the best temperature gradient level to produce optimal energy, so that optimal data can be obtained in simulating the micro power plant. Testing data that has been done, and used as evaluation material in the simulation that is carried out. Based on the simulation, data obtained with a minimum power of 6,215 W for 2 minutes and a maximum power of 19,932 W for 8 minutes.Keywords— Energy, IoT, Portable generator thermoelectric

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