EUROPEAN JOURNAL OF SUSTAINABLE DEVELOPMENT RESEARCH

Keyword: renewable energy

9 results found.

Research Article
Economic and Environmental Analyses of Multi-Generation Renewable Energy System for Dairy Farms
European Journal of Sustainable Development Research, 2022, 6(1), em0174, https://doi.org/10.21601/ejosdr/11397
ABSTRACT: In the present work, economic and environment analyses of multi-generational micro gas turbine systems are reported for a grid-independent dairy farm in Ontario, Canada. Onsite anaerobic digesters utilize farm waste to produce carbon neutral biogas for combustion in the micro gas turbine modules. A range of micro gas turbines coupled with absorption refrigeration units and an organic Rankine cycle are driven by the recovered waste heat to meet the cooling and electrical needs of farm sizes between 250 and 6000 cows. Farms of these sizes are observed to be capable of having their cooling and electricity needs met with micro gas turbines ranging in capacity from 100 to 1000 kW output. Environmental performance is maximized when the net output of the system just matches the energy requirement of the farm, and produces no excess electricity. Thus to minimize the environmental impact, but remain financially viable, various configurations are suggested for farm sizes under 2000 cows.
Research Article
A Comprehensive Review and the Efficiency Analysis of Horizontal and Vertical Axis Wind Turbines
European Journal of Sustainable Development Research, 2021, 5(3), em0163, https://doi.org/10.21601/ejosdr/11001
ABSTRACT: The Wind has the potential as an alternative source of renewable energy. Natural wind from the earth’s atmosphere is captured before converted into mechanical energy and then electrical energy. This paper presents a comparison of the efficiency of the horizontal axis wind turbine (HAWT) and vertical axis wind turbines (VAWT). The efficiency is determined using SOLIDWORKS Flow Simulation considering the wind scenario, a constant wind speed of 5 km/h with constant wind direction. It has been found that the drag coeffiecient of HAWT, VAWT–Savonius and VAWT– Darrieus are 0.5175, 0.2605 and 13.5622 respectively. This paper also proposes building a wind farm in Seamatan where the average wind speed is highest in Sarawak, Malaysia ranging from 4 km/h to 9 km/h.
Literature Review
A Review of Renewable Energy Options, Applications, Facilitating Technologies and Recent Developments
European Journal of Sustainable Development Research, 2020, 4(4), em0138, https://doi.org/10.29333/ejosdr/8432
ABSTRACT: A critical overview of renewable energy is provided, including descriptions of renewable energy sources, technologies, assessments, comparisons and planning as well as energy technologies that facilitate renewable energy sources. The renewable energy types considered include solar, wind, geothermal, bioenergy and waste-derived energy, ocean thermal energy, tidal, wave and hydraulic. Also covered for contextual and broader purposes are energy systems more generally and their sustainability. In addition, recent research on new renewable energy sources as well as important recent developments in renewable energy are considered.
Research Article
The Motivation for Renewable Energy and its Comparison with Other Energy Sources: A Review
European Journal of Sustainable Development Research, 2019, 3(1), em0076, https://doi.org/10.20897/ejosdr/4005
ABSTRACT: Energy is the backbone of the evolution of humanity, it has assisted mankind to endeavor through various ages of history. The quest to obtain energy with minimal expenditure and pollution is still being worked on and will continue on in the future. Even in this modern age, energy production in several developing countries often falls short of energy requirements which results in frequent power cuts. As the world economy continues to grow, energy consumption is expected to continue to grow. Fossil fuel is limited, so it is important to consider other sources of energy e.g. renewables especially solar to meet the energy demands in the future. The world has diverse solar energy sources which are not yet fully explored. This review sheds light on the solar renewable energy and other non-renewable sources of energy available in the world and a comparative analysis of both the energy resources across the world is also included as a separate section titled ‘Comparative analysis’. It also gives a brief overview of the various techniques employed by different countries to overcome the energy crisis through and also a framework for employing such techniques in countries which are lagging in energy production in order to fully avail the benefits of energy sources, which are abundant in the world.
Research Article
An Overview of Renewable Energy Sources and Their Energy Potential for Sustainable Development in Myanmar
European Journal of Sustainable Development Research, 2019, 3(1), em0071, https://doi.org/10.20897/ejosdr/3951
ABSTRACT: Myanmar has an abundance of renewable energy resources. It has around 50% of forest cover and the gifted geographic locations with four main large rivers flowing across the country. Besides, its economy is mainly based on agriculture. Among the major renewable energy sources in Myanmar, hydropower plays a key role in electrification of Myanmar while biomass provides the major energy supply for cooking and heating in rural areas. Besides, in the years to come, the utilization of solar energy and wind energy will also be emerging to fulfill the additional energy requirements of the country. Therefore, this study highlighted the renewable energy sources and their future energy potential for increasing the energy self-sufficiency in Myanmar. It was observed that Myanmar had the total installed capacity of approximately 3300 Megawatts from the renewable energy sources in 2016, remaining a large amount of future installed capacity potential. If the sustainability and constraints about renewable energy sources would be managed efficiently, Myanmar could meet the future energy requirements for sustainable development of the country.
Research Article
Towards a Sustainable Electricity Supply in Nigeria: The Role of Decentralized Renewable Energy System
European Journal of Sustainable Development Research, 2018, 2(4), 40, https://doi.org/10.20897/ejosdr/3908
ABSTRACT: In Nigeria, access to reliable and stable supply of electricity is a major challenge for both the urban and rural dwellers. In this study, comprehensive review of accessibility to clean and modern energy in Nigeria has been carried out. Also, this paper examines the potential of renewable energy (RE) resources in Nigeria that can be harnessed for continuous energy supply and the government’s efforts to ensure RE‘s sustainability. Nigeria is endowed with abundant energy resources but the existing electric energy infrastructures are unable to meet the energy demands of teeming population. There is imbalance in energy supply and demand in the country. Over the period from 2000 to 2014, there was an average of about 2.35 billion kWh of energy gap between energy production and energy consumption. The highest electricity consumption per capita recorded so far was 156 kWh in 2012. This makes Nigeria one of the country with the lowest electricity consumption on per capita basis in the world. In order to improve access to clean energy supply and achieve sustainable development, this paper pin points the significance of decentralized renewable energy systems and needs for the government to review the policies on renewable energy development in the country.
Research Article
Multi-generation Renewable Energy System for Dairy Farms: Exergy Analysis
European Journal of Sustainable Development Research, 2018, 2(3), 37, https://doi.org/10.20897/ejosdr/2669
ABSTRACT: Exergy analyses of multi-generational micro gas turbine systems are reported for a grid-independent dairy farm in Ontario, Canada, with an aim of being environmentally benign. Onsite anaerobic digesters utilize farm waste to produce carbon neutral biogas for combustion in the micro gas turbine modules. A range of micro gas turbines coupled with absorption refrigeration units and an organic Rankine cycle are driven by the recovered waste heat to meet the cooling and electrical needs of farm sizes between 250 and 6000 cows. Exergy balances are applied to each component as well the overall system configuration, and exergy efficiencies are obtained. Small farm sizes with one absorption cooling unit are found to be more exergy efficient than large farm sizes with more than one absorption cooling unit, but the difference is less than 0.5%. Most of exergy destruction within the micro gas turbine module occurs in the combustion chamber, which contributes 79% of the exergy destruction of the system. Farm sizes between 250 and 6000 cows are observed to be capable of having their cooling and electricity needs met with micro gas turbines ranging in capacity from 100 to 1000 kW output, while exhibiting similar exergy efficiencies.
Research Article
Analytical Review on the Trends and Present Situation of Large-scale Sustainable Energy Storage Technology
European Journal of Sustainable Development Research, 2018, 2(3), 31, https://doi.org/10.20897/ejosdr/86200
ABSTRACT: Energy storage technology is to achieve large-scale access to renewable energy sources; the key technology for improving efficiency, safety and economy of power systems is also to increase the ratio of clean energy to power generation, and effective means of promoting haze governance. By the end of 2015, the total installed capacity of the global energy storage equipment was about 167 GW, about 2.9% of the world's total installed power; the energy storage equipment in China is 22.8 GW, about 1.7% of the total installed power of the country. By 2050, China's energy storage equipment will reach 200 GW; the market size will reach more than 2 trillion RMB. The existing energy storage technologies include pumped storage, compressed air energy storage, flywheel energy storage, superconducting storage, lead-acid batteries, lithium batteries, sodium sulfur batteries, liquid flow batteries and super capacitors. Different energy storage technologies are applicable to different applications and fields, depending on system power and discharge time, the main application areas of energy storage technology can be divided into three parts: energy management, power bridging and power quality management. Future energy storage market development will focus on distributed energy storage, distributed photovoltaic PV + energy storage, Micro grid, distribution network side and user side and other fields. In recent years, China's energy storage industry has accelerated the pace of development in terms of project planning, policy support and capacity layout, in the next few years, with the rapid development of renewable energy industry, the energy storage market will also enjoy rapid growth. However, the energy storage industry in this country is still in the initial stage of development, and it is mainly based on demonstration and application, the commercial application of energy storage faces the high cost of storage and the imperfect market of power exchange. Energy storage technology route is not mature, lack of energy storage, effective price and effective incentives are both opportunities and challenges.
Research Article
Opportunities and Challenges of AC/DC Transmission Network Planning Considering High Proportion Renewable Energy
European Journal of Sustainable Development Research, 2018, 2(2), 17, https://doi.org/10.20897/ejosdr/83707
ABSTRACT: The time and space distribution characteristics of future high proportion of renewable energy sources will bring unprecedented challenges to the electric power system’s processing and planning, the basic form of electric power system and operating characteristics will have fundamental changes. Based on the research status quo at home and abroad, this paper expounds the four scientific problems of the transmission network planning with high proportion of renewable energy. Respectively, from the network source collaborative planning, transmission network flexible planning. With the distribution network in conjunction with the transmission network planning, transmission planning program comprehensive evaluation and decision-making methods. This paper puts forward the research ideas and framework of transmission network planning considering the high proportion of renewable energy. At the end, the future high proportion of (renewable energy) grid-connected transmission network’s opportunities and challenges are presented.