scholarly journals Development and Verification of an Integrated Seawater Desalination and Renewable Energy System Model

2021 ◽  
Author(s):  
Muath Bani Salim ◽  
Xuewei Zhang
Keyword(s):  
Renewable Energy ◽  
Computer Model ◽  
Specific Energy Consumption ◽  
Pump Energy ◽  
Energy System ◽  
Renewable Energy Resources ◽  
Energy System Model ◽  
Electrical Grid ◽  
Feed Pressure ◽  
One Year

Abstract This work investigates the modeling and verification of seawater reverse osmosis powered by renewable energy resources (SWRO-RES). The model includes one stage of RO membranes, high pressure (HP) pump, energy recovery devices (ERD), Wind turbines (WT), photovoltaic panels (PV), and electrical grid as a back-up for the cases when there is weak penetration of the RES. Antibugging and tracing for the computer model were used as part of the code verification to discover all coding errors and check whether the computer model conforms to the SWRO specifications. After that, the calculations verifications process was performed using sensitivity analysis (SA) to evaluate whether the model response follows the anticipated direction and to check the model at some extreme conditions. Four SA cases were implemented to evaluate the SWRO-RES freshwater production, freshwater concentration, recovery rate, and specific energy consumption (SEC). Case 1 was the SA for different feed pressure values. In this case, it is important to find the pressure value that gives the lowest freshwater concentration. Case 2 was the SA for different feedwater temperature values. While case 3 was the SA for the feedwater concentration. In all these cases, the model shows a verified response and as anticipated. The last SA case was to study the effect of different numbers of WT and PV panels and evaluate the electrical grid share considering one year of operation for the SWRO-RES plant.

scholarly journals Prospect of renewable energy resources in Bangladesh

2021 ◽  
Vol 12 (3) ◽  
pp. 1804
Author(s):  
Mohammad Mafizur Rahman ◽  
Feroza Begum
Keyword(s):  
Renewable Energy ◽  
Energy System ◽  
Living Standards ◽  
Energy Resources ◽  
Energy Access ◽  
Renewable Energy Resources ◽  
Comprehensive Understanding ◽  
Current State ◽  
Renewable Energy System ◽  
Stable Source

<span lang="EN-GB">The objective of this paper is to provide an overview of the current state of renewable energy resources in Bangladesh, as well as to examine various forms of renewable energies in order to gain a comprehensive understanding of how to address Bangladesh's power crisis issues in a sustainable manner. Electricity is currently the most useful kind of energy in Bangladesh. It has a substantial influence on a country's socioeconomic standing and living standards. Maintaining a stable source of energy at a cost that is affordable to everyone has been a constant battle for decades. Bangladesh is blessed with a wealth of natural resources. Bangladesh has a huge opportunity to accelerate its economic development while increasing energy access, livelihoods, and health for millions of people in a sustainable way due to the renewable energy system.</span>

Optimum sizing and simulation of hybrid renewable energy system for remote area

2021 ◽  
pp. 0958305X2110301
Author(s):  
Animesh Masih ◽  
HK Verma
Keyword(s):  
Renewable Energy ◽  
Reliability Index ◽  
Energy System ◽  
Energy Resources ◽  
Total System ◽  
Renewable Energy Resources ◽  
Optimal Sizing ◽  
Remote Areas ◽  
Grasshopper Optimization Algorithm ◽  
Hybrid Renewable Energy

In current scenario, people tend to move towards outskirts and like to settle in places that are close to nature. But, due to urban lifestyle and to fulfill the basic needs, demand of electricity remains the same as in urban areas. This demand of electricity can be only fulfilled by using hybrid renewable energy resources, which is easily available in outskirts. Renewable energy resources are unreliable and more expensive. Researchers are working to make, it more reliable and economic in terms of utilization. This article proposes a metaheuristic grasshopper optimization algorithm (GOA) for the optimal sizing of hybrid PV/wind/battery energy system located in remote areas. The proposed algorithm finds the optimal sizing and configuration of remote village load demand that includes house electricity and agriculture. The optimization problem is solved by minimization of total system cost at a desirable level of loss of power supply’s reliability index (LPSRI). The results of GOA are compared with particle swarm optimization (PSO), genetic algorithm (GA) and hybrid optimization of multiple energy resources (HOMER) software. In addition, results are also validated by modeling and simulation of the hybrid energy system and its configurations at different weather conditions-based results. Hybrid PV/wind/battery is found as an optimal system at remote areas and sizing are[Formula: see text] with cost of energy (COE) (0.3473$/kWh) and loss of power supplies reliability index (LPSRI) (0%). It is clear from the results that GOA based methods are more efficient for selection of optimal energy system configuration as compared to others algorithms.

scholarly journals Integration of Different Individual Heating Scenarios and Energy Storages into Hybrid Energy System Model of China for 2030

Energies ◽  
2019 ◽  
Vol 12 (11) ◽  
pp. 2083 ◽  
Author(s):  
Muhammad Faizan Tahir ◽  
Haoyong Chen ◽  
Muhammad Sufyan Javed ◽  
Irfan Jameel ◽  
Asad Khan ◽  
...  
Keyword(s):  
Renewable Energy ◽  
Natural Gas ◽  
Fuel Consumption ◽  
Energy System ◽  
Combined Heat And Power ◽  
Heat Pumps ◽  
Vital Role ◽  
Hybrid Energy System ◽  
Energy System Model ◽  
Hybrid Energy

Traditional energy supply infrastructures are on the brink of facing a major transformation due to energy security concerns, environment pollution, renewable energy intermittency and fossil fuel scarcity. A hybrid energy system constitutes the integration of different energy carriers like electricity, heat and fuel which play a vital role in addressing the above challenges. Various technological options like combined heat and power, heat pumps, electrolysers and energy storages ease out multiple carrier integration in an energy hub to increase system flexibility and efficiency. This work models the hybrid energy system of China for the year 2030 by using EnergyPLAN. Atmosphere decarbonization is achieved by replacing conventional coal and natural gas boilers with alternative individual heating sources like hydrogen operated micro combined heat and power natural gas micro combined heat and power and heat pumps. Moreover, rockbed storage as well as single and double penstock pumped hydro storages are added in the proposed system in order to cope with the stochastic nature of intermittent renewable energy such as wind and solar photovoltaic. The technical simulation strategy is employed to analyze the optimal combination of energy producing components by determining annual costs, fuel consumption and CO2 emissions. The results substantiate that a heat pump and double penstock pumped hydro storage addition to the individual heating and electricity network not only proves to be an economically viable option but also reduces fuel consumption and emissions.

scholarly journals Renewable and Sustainable Energy Transitions for Countries with Different Climates and Renewable Energy Sources Potentials

Energies ◽  
2018 ◽  
Vol 11 (12) ◽  
pp. 3523 ◽  
Author(s):  
Haichao Wang ◽  
Giulia Di Pietro ◽  
Xiaozhou Wu ◽  
Risto Lahdelma ◽  
Vittorio Verda ◽  
...  
Keyword(s):  
Renewable Energy ◽  
Sustainable Energy ◽  
Renewable Energy Sources ◽  
Energy System ◽  
Energy Sources ◽  
Climate Conditions ◽  
Energy System Model ◽  
Cross Border ◽  
Energy Transitions ◽  
The Future

Renewable energy sources (RES) are playing an increasingly important role in energy markets around the world. It is necessary to evaluate the benefits from a higher level of RES integration with respect to a more active cross-border transmission system. In particular, this paper focuses on the sustainable energy transitions for Finland and Italy, since they have two extreme climate conditions in Europe and quite different profiles in terms of energy production and demand. We developed a comprehensive energy system model using EnergyPLAN with hourly resolution for a reference year for both countries. The models include electricity, heat and transportation sectors. According to the current base models, new scenarios reflecting an RES increase in total fuel consumption have been proposed. The future shares of renewables are based on each nation’s potential. The outcomes of the new scenarios support the future national plans, showing how decarburization in an energy system can occur in relation to the European Roadmap 2030 and 2050. In addition, possible power transmission between Italy and Finland were investigated according to the vision of an integrated European energy system with more efficient cross-border activities.

scholarly journals Optimal Management of a Hybrid Renewable Energy System Coupled with a Membrane Bioreactor Using Enviro-Economic and Power Pinch Analyses for Sustainable Climate Change Adaption

2018 ◽  
Vol 11 (1) ◽  
pp. 66 ◽  
Author(s):  
Tuan-Viet Hoang ◽  
Pouya Ifaei ◽  
Kijeon Nam ◽  
Jouan Rashidi ◽  
Soonho Hwangbo ◽  
...  
Keyword(s):  
Renewable Energy ◽  
Membrane Bioreactor ◽  
Energy System ◽  
Optimization Approach ◽  
Electrical Grid ◽  
Environmental Models ◽  
Hybrid Renewable Energy System ◽  
Renewable Energy System ◽  
Scale Optimization ◽  
Hybrid Renewable Energy

This study proposed an optimal hybrid renewable energy system (HRES) to sustainably meet the dynamic electricity demand of a membrane bioreactor. The model-based HRES consists of solar photovoltaic panels, wind turbines, and battery banks with grid connectivity. Three scenarios, 101 sub-scenarios, and three management cases were defined to optimally design the system using a novel dual-scale optimization approach. At the system scale, the power-pinch analysis was applied to minimize both the size of components and the outsourced needed electricity (NE) from Vietnam’s electrical grid. At a local-scale, economic and environmental models were integrated, and the system was graphically optimized using a novel objective function, combined enviro-economic costs (CEECs). The results showed that the optimal CEECs were $850,710/year, $1,030,628/year, and $1,693,476/year for the management cases under good, moderate, and unhealthy air qualities, respectively. The smallest CEEC was obtained when 47% of the demand load of the membrane bioreactor was met using the HRES and the rest was supplied by the grid, resulting in 6,800,769 kg/year of CO2 emissions.

Energy

2012 ◽  
Author(s):  
José Goldemberg
Keyword(s):  
Renewable Energy ◽  
Smart Grids ◽  
Carbon Capture ◽  
New Technologies ◽  
Renewable Energy Sources ◽  
Carbon Capture And Storage ◽  
Energy System ◽  
Renewable Energy Resources ◽  
Available Energy ◽  
World Energy

Without a doubt, the topic of energy--from coal, oil, and nuclear to geothermal, solar and wind--is one of the most pressing across the globe. It is of paramount importance to policy makers, economists, environmentalists, and industry as they consider which technologies to invest in, how to promote use of renewable energy sources, and how to plan for dwindling reserves of non-renewable energy. In Energy: What Everyone Needs to Know, José Goldemberg, a nuclear physicist who has been hailed by Time magazine as one of the world's top "leaders and visionaries on the environment," takes readers through the basics of the world energy system, its problems, and the technical as well as non-technical solutions to the most pressing energy problems. Addressing the issues in a Q-and-A format, Goldemberg answers such questions as: What are wind, wave, and geothermal energy? What are the problems of nuclear waste disposal? What is acid rain? What is the greenhouse gas effect? What is Carbon Capture and Storage? What are smart grids? What is the Kyoto Protocol? What is "cap and trade"? The book sheds light on the role of population growth in energy consumption, renewable energy resources, the amount of available energy reserves (and when they will run out), geopolitical issues, environmental problems, the frequency of environmental disasters, energy efficiency, new technologies, and solutions to changing consumption patterns. It will be the first place to look for information on the vital topic of energy.

scholarly journals Assessment of sustainability of different renewable energy systems based on life cycle exergy analysis

Tehnika ◽  
2021 ◽  
Vol 76 (5) ◽  
pp. 595-602
Author(s):  
Branislav Petrović ◽  
Milan Gojak
Keyword(s):  
Sustainable Development ◽  
Renewable Energy ◽  
Life Cycle ◽  
Exergy Analysis ◽  
Sustainability Assessment ◽  
Energy Systems ◽  
Electrical Energy ◽  
Energy System ◽  
Renewable Energy Resources ◽  
System Sustainability

The sustainable development of energy systems does not only involve the use of renewable energy resources but the increase in their efficiency as well, enabling society to maximise the benefits of their consumption. The production of electrical energy from clean and renewable sources contributes to lowered fossil fuel exploitation and the reduction of its damaging effect on the environment. This is a way to reach the global target of sustainable development - striking a balance between resource consumption and the achievable natural cycle regeneration. Environmental protection is in the focus of attention. Namely, when energy system sustainability is assessed, in addition to the ecological sustainability assessment (based on life cycle analysis - LCA), attention should be paid to the decrease in energy quality in energy processes (exergy loss). This paper presents the thermodynamic approach to energy system sustainability assessment by applying life cycle exergy analysis (LCEA). The key issue is the assessment of systems which use sustainable energy sources: the wind turbine and the stand-alone photovoltaic solar system.

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