scholarly journals Technical and economic evaluation of a standalone and on grid hybrid renewable energy: A case study at Eski̇şehi̇r Technical University

2021 ◽  
pp. 184-194
Author(s):  
Hussein Kerow ADAN
Keyword(s):  
Renewable Energy ◽  
Economic Evaluation ◽  
Hybrid System ◽  
Energy Demand ◽  
Fossil Fuels ◽  
High Energy ◽  
Optimal Configuration ◽  
Population Increase ◽  
Technical University ◽  
Hybrid Renewable Energy

Because of high-energy demand, population increase and exhaustion of fossil fuels, renew- able energy is being utilized around the world especially for hybrid systems. The hybrid sys- tem should be optimally sized hence the aim of the study is to determine the technical and economic evaluation of a standalone and on grid hybrid system to supply power to the De- partment of Electrical and Electronics Engineering in Eskişehir Technical University. Hybrid optimization model for multiple energy resources (HOMER) program is used to achieve the optimal configuration of the standalone and on grid hybrid system and these systems are com- pared to each other to see the most economical one according to the net present cost (NPC) and cost of energy (COE). The result revealed that the most optimal configuration of the two systems is PV/Grid hybrid system with 198kW PV panel and the grid. It has NPC and COE of $1.68M and 0.176$/kWh but is not environmentally friendly as a standalone system due to low renewable fraction (RF). Overall, by using hybrid renewable energy systems (HES), the study is trying to solve the problem of reliability, cost and environmental concerns of the conventional energy sources.

scholarly journals Optimization of biogas yield from lignocellulosic materials with different pretreatment methods: a review

2021 ◽  
Vol 14 (1) ◽  
Author(s):  
Kehinde Oladoke Olatunji ◽  
Noor A. Ahmed ◽  
Oyetola Ogunkunle
Keyword(s):  
Renewable Energy ◽  
Energy Demand ◽  
Greenhouse Gas Emission ◽  
Anaerobic Fermentation ◽  
Biogas Production ◽  
Renewable Energy Sources ◽  
High Energy ◽  
Population Increase ◽  
Energy Sources ◽  
Biogas Yield

AbstractPopulation increase and industrialization has resulted in high energy demand and consumptions, and presently, fossil fuels are the major source of staple energy, supplying 80% of the entire consumption. This has contributed immensely to the greenhouse gas emission and leading to global warming, and as a result of this, there is a tremendous urgency to investigate and improve fresh and renewable energy sources worldwide. One of such renewable energy sources is biogas that is generated by anaerobic fermentation that uses different wastes such as agricultural residues, animal manure, and other organic wastes. During anaerobic digestion, hydrolysis of substrates is regarded as the most crucial stage in the process of biogas generation. However, this process is not always efficient because of the domineering stableness of substrates to enzymatic or bacteria assaults, but substrates’ pretreatment before biogas production will enhance biogas production. The principal objective of pretreatments is to ease the accessibility of the enzymes to the lignin, cellulose, and hemicellulose which leads to degradation of the substrates. Hence, the use of pretreatment for catalysis of lignocellulose substrates is beneficial for the production of cost-efficient and eco-friendly process. In this review, we discussed different pretreatment technologies of hydrolysis and their restrictions. The review has shown that different pretreatments have varying effects on lignin, cellulose, and hemicellulose degradation and biogas yield of different substrate and the choice of pretreatment technique will devolve on the intending final products of the process.

scholarly journals Enhanced Evolutionary Sizing Algorithms for Optimal Sizing of a Stand-Alone PV-WT-Battery Hybrid System

2019 ◽  
Vol 9 (23) ◽  
pp. 5197
Author(s):  
Asif Khan ◽  
Turki Alghamdi ◽  
Zahoor Khan ◽  
Aisha Fatima ◽  
Samia Abid ◽  
...  
Keyword(s):  
Hybrid System ◽  
Energy Demand ◽  
Fossil Fuels ◽  
Heuristic Algorithms ◽  
Renewable Energy Sources ◽  
Storage System ◽  
High Energy ◽  
Total Annual Cost ◽  
Hybrid Schemes ◽  
Optimal Sizing

An increase in the world’s population results in high energy demand, which is mostly fulfilled by consuming fossil fuels (FFs). By nature, FFs are scarce, depleted, and non-eco-friendly. Renewable energy sources (RESs) photovoltaics (PVs) and wind turbines (WTs) are emerging alternatives to the FFs. The integration of an energy storage system with these sources provides promising and economical results to satisfy the user’s load in a stand-alone environment. Due to the intermittent nature of RESs, their optimal sizing is a vital challenge when considering cost and reliability parameters. In this paper, three meta-heuristic algorithms: teaching-learning based optimization (TLBO), enhanced differential evolution (EDE), and the salp swarm algorithm (SSA), along with two hybrid schemes (TLBO + EDE and TLBO + SSA) called enhanced evolutionary sizing algorithms (EESAs) are proposed for solving the unit sizing problem of hybrid RESs in a stand-alone environment. The objective of this work is to minimize the user’s total annual cost (TAC). The reliability is considered via the maximum allowable loss of power supply probability ( L P S P m a x ) concept. The simulation results reveal that EESAs provide better results in terms of TAC minimization as compared to other algorithms at four L P S P m a x values of 0%, 0.5%, 1%, and 3%, respectively, for a PV-WT-battery hybrid system. Further, the PV-WT-battery hybrid system is found as the most economical scenario when it is compared to PV-battery and WT-battery systems.

scholarly journals Potential of Renewable Energy Sources in Gökçeada Turkey

2014 ◽  
Author(s):  
Ümran Şengül ◽  
Sibel Tan ◽  
Şermin Atak ◽  
Ahmet Bilal Şengül
Keyword(s):  
Renewable Energy ◽  
Energy Demand ◽  
Fossil Fuels ◽  
Renewable Energy Sources ◽  
Population Increase ◽  
Energy Sources ◽  
Energy Potential ◽  
Goods And Services ◽  
Energy Evaluation ◽  
Harmful Emissions

Energy is the ability to do work and life is the source of life. In parallel to the increase of population increase in the production of goods and services are increasingly in demand for energy. Evaluation of all sources of energy that can be produced now it has become very necessary. Widely used in meeting the energy demand of fossil fuels (oil, gas, coal) are limited energy resources and emissions are more harmful emissions. Spread of harmful emissions lessened even the most important problems is that they will end done day. From this perspective, the assessment of renewable energy sources in the world is an important issue. Gökçeada, Turkey is the largest island and the hills and plains lined one after the other, with a rugged structure consists of volcanic mass. Gökçeada consists of 77% mountainous, 12 % hilly and 11% plains and in terms of wind energy, which is the region with the greatest potential in Turkey. However, in terms of Gökçeada development index the least developed regions in the sixth regions, which is located in class. From this perspective, in this study, which will provide an important contribution to the region development of renewable energy sources wind, solar, tidal and renewable, biofuels and Hydraulics energy potential and capacity were investigated. Based on the data obtained, recommendations are made to invest in the renewable energy sector.

An Economic Assessment of Hybrid Renewable Energy for a Remote Area Electrification in Iran

2016 ◽  
Vol 818 ◽  
pp. 151-155
Author(s):  
Amir Hesam Khavari ◽  
Zulkurnain Abdul-Malek ◽  
Mehdi Moradi ◽  
Jalal Tavalaei ◽  
Sajjad Abdolahzadeh Anbaran ◽  
...  
Keyword(s):  
Renewable Energy ◽  
Hybrid System ◽  
Fossil Fuels ◽  
Energy System ◽  
Remote Area ◽  
Energy Resources ◽  
Renewable Energy Resources ◽  
Hybrid Renewable Energy System ◽  
Hybrid Renewable Energy ◽  
The Impact

The utilization of renewable resources is growing, in part due to the environmental impacts caused by fossil fuels. The largest sources of renewable energy are wind and solar and many predict that these energy sources will be increasingly used for distributed generation. In this paper, the feasibility is examined of a grid-independent system applied for a remote area electrification in Binalood, Iran. Traditional power systems for remote or rural areas are based on fossil fuels. After addition of renewable energy resources, solar energy applications have become popular in remote energy systems. The recent study and research works show that adding other possible renewable energy resources such as wind, hydro and biomass could make a hybrid system more cost-effective and environmentally friendly. Hence, in the present study, an overview of applied hybrid renewable energy system (HRES) for worldwide villages with special attention on Iran has been proposed to help present and future works for better achievement in this field. Furthermore sensitivity analyses are performed to determine the impact on performance of several key parameters: wind speed and fuel costs. HOMER was used to evaluate the feasibility of various hybrid systems. The results of a comprehensive feasibility data analysis along with its economic evaluation indicate that the wind-diesel hybrid system with battery storage is most efficient energy system for supplying this remote area's electrical energy demands.

scholarly journals Priority Based Hybrid Renewable Energy Model for J&K

2021 ◽  
Vol 10 (3) ◽  
pp. 80-86
Author(s):  
Showkat Rasool Dar ◽  
Gopal Naryal ◽  
Anand Mohan
Keyword(s):  
Renewable Energy ◽  
Hybrid System ◽  
Energy Demand ◽  
Energy Potential ◽  
Data Set ◽  
Cost Of Energy ◽  
Hilly Region ◽  
Tremendous Amount ◽  
The Cost ◽  
Hybrid Renewable Energy

This paper presents energy requirements of J&K state of India with the present policies and future planning for the best utilization of the available resources. There will be acceleration in the future developmental graph in the country like India resulting in bulk of the energy demand. The procedures and methods applied currently adopted in renewable field aims for exploring possible energy production while considering the environmental impact. The hilly region such as J&K and Ladakh region has tremendous amount of renewable energy potential. The presentation of this paper aims the cost analysis of hybrid power system in the region. For optimization and sensitivity analysis, HOMER pro version 3.23.8 is used. The renewable resources for selected area are analyzed in Global Solar atlas (GSA) and Global wind atlas (GWA) and the result is compared with the meteorological tower data set. The modeling of the hybrid system is purposed on a 10% of load variability and as a result of the study, the levelized cost of energy (LCOE) from the hybrid system is obtained 0.0466 USD/kWh which will be 30 to 50 percent cheaper than the priceofelectricityfrom conventional system.

scholarly journals Techno-Economic Analysis of a Novel Hydrogen-Based Hybrid Renewable Energy System for Both Grid-Tied and Off-Grid Power Supply in Japan: The Case of Fukushima Prefecture

2020 ◽  
Vol 10 (12) ◽  
pp. 4061 ◽  
Author(s):  
Naoto Takatsu ◽  
Hooman Farzaneh
Keyword(s):  
Renewable Energy ◽  
Energy Demand ◽  
Renewable Energy Sources ◽  
Economic Assessment ◽  
Energy System ◽  
Modeling Framework ◽  
Integrated Simulation ◽  
Hybrid Renewable Energy System ◽  
Renewable Energy System ◽  
Hybrid Renewable Energy

After the Great East Japan Earthquake, energy security and vulnerability have become critical issues facing the Japanese energy system. The integration of renewable energy sources to meet specific regional energy demand is a promising scenario to overcome these challenges. To this aim, this paper proposes a novel hydrogen-based hybrid renewable energy system (HRES), in which hydrogen fuel can be produced using both the methods of solar electrolysis and supercritical water gasification (SCWG) of biomass feedstock. The produced hydrogen is considered to function as an energy storage medium by storing renewable energy until the fuel cell converts it to electricity. The proposed HRES is used to meet the electricity demand load requirements for a typical household in a selected residential area located in Shinchi-machi in Fukuoka prefecture, Japan. The techno-economic assessment of deploying the proposed systems was conducted, using an integrated simulation-optimization modeling framework, considering two scenarios: (1) minimization of the total cost of the system in an off-grid mode and (2) maximization of the total profit obtained from using renewable electricity and selling surplus solar electricity to the grid, considering the feed-in-tariff (FiT) scheme in a grid-tied mode. As indicated by the model results, the proposed HRES can generate about 47.3 MWh of electricity in all scenarios, which is needed to meet the external load requirement in the selected study area. The levelized cost of energy (LCOE) of the system in scenarios 1 and 2 was estimated at 55.92 JPY/kWh and 56.47 JPY/kWh, respectively.

scholarly journals Designing high energy density flow batteries by tuning active-material thermodynamics

RSC Advances ◽  
2021 ◽  
Vol 11 (10) ◽  
pp. 5432-5443
Author(s):  
Shyam K. Pahari ◽  
Tugba Ceren Gokoglan ◽  
Benjoe Rey B. Visayas ◽  
Jennifer Woehl ◽  
James A. Golen ◽  
...  
Keyword(s):  
Renewable Energy ◽  
Energy Storage ◽  
Energy Density ◽  
Fossil Fuels ◽  
Active Material ◽  
High Energy ◽  
Theoretical Framework ◽  
High Energy Density ◽  
Density Flow ◽  
The Cost

With the cost of renewable energy near parity with fossil fuels, energy storage is paramount. We report a breakthrough on a bioinspired NRFB active-material, with greatly improved solubility, and place it in a predictive theoretical framework.

scholarly journals Analysis of Energy System in Norway with Focus on Energy Consumption Prediction

2017 ◽  
Vol 9 (1) ◽  
pp. 5-14 ◽  
Author(s):  
Maryam Hamlehdar ◽  
Alireza Aslani
Keyword(s):  
Energy Consumption ◽  
Energy Demand ◽  
Fossil Fuels ◽  
Renewable Energy Sources ◽  
Electricity Consumption ◽  
Energy System ◽  
High Energy ◽  
Regression Result ◽  
Industry Growth ◽  
The Status

Abstract Today, the fossil fuels have dominant share of energy supply in order to respond to the high energy demand in the world. Norway is one of the countries with rich sources of fossil fuels and renewable energy sources. The current work is to investigate on the status of energy demand in Norway. First, energy and electricity consumption in various sectors, including industrial, residential are calculated. Then, energy demand in Norway is forecasted by using available tools. After that, the relationship between energy consumption in Norway with Basic economics parameters such as GDP, population and industry growth rate has determined by using linear regression model. Finally, the regression result shows a low correlation between variables.

scholarly journals A HYBRID SOLAR-WIND ENERGY GENERATION APPROACH FOR SRI LANKA

2021 ◽  
Author(s):  
K.S.L. Mendis ◽  
◽  
K.G.A.S. Waidyasekara ◽  
S.S.C. Ginthotavidana ◽  
◽  
...  
Keyword(s):  
Solar Wind ◽  
Renewable Energy ◽  
Sri Lanka ◽  
Energy Demand ◽  
National Level ◽  
Energy Systems ◽  
Energy Generation ◽  
Renewable Energy Systems ◽  
Renewable Energy Generation ◽  
Hybrid Renewable Energy

The escalation of global energy demand has enhanced the interest on renewable energy technologies worldwide. The reliance of a single energy source has become problematic, and hybrid renewable energy technology has been identified as a feasible solution. Producing energy to limitless increasing demand is a challenging issue faced by Sri Lanka nowadays. Although, there are some studies carried out for renewable energy systems, solar-wind based hybrid renewable systems is an understudied area in Sri Lankan context. Hence, this paper aims to explore the applicability of hybrid solar-wind renewable energy generation approach for Sri Lanka. The study follows a qualitative approach with semi structured interviews from eight industrial experts, and manual content analysis technique was used for data analysis. The paper discussed the current installation practices of solar and wind technologies, applicability of hybrid solar and wind renewable energy systems and national level contribution for hybrid systems. Finally, a validated model was proposed to implement hybrid renewable energy generation systems for Sri Lanka.

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