Journal of Energy Systems最新文献

{"title":"Climate emergency-focused economic model","authors":"B. Kilkis","doi":"10.30521/jes.1134845","DOIUrl":"https://doi.org/10.30521/jes.1134845","url":null,"abstract":"This paper deals with the existing carbon dioxide mitigation efforts toward the Paris agreement and shows that current economic rules and the first law of thermodynamics, all of which are linear, are necessary but not sufficient tools to solve the nonlinear problems of global warming. In this respect, the quasi-linear, Pareto principle-based green economy has been modified by the second law of thermodynamics, which deals with the useful work potential of energy systems and resources for added value in society, aka exergy. It is argued that the aged Pareto principle, which may only associate with the first law of thermodynamics, recognizes less than half of the total root causes of emissions. For example, fossil fuels are currently treated as a simple economic commodity in the stock market, subject to market rules rather than environmental parameters, whereas exergy destructions are the primary root causes of emissions. A new model was developed for evaluating and rating green energy systems, which calculates the exergy destruction-based emissions and optimizes systems for minimum emissions. Five cases are presented to quantify the face value of the Pareto principle against renewable energy resources and systems. These cases are, namely, solar energy, wind energy, geothermal energy with organic Rankine cycle, heat pumps, and Fresnel lenses for photovoltaic panels. Sample results show that the Pareto principle may not rate these systems because its equivalent unit exergy value (0.21 kWh/kWh), also described as virtual Pareto temperature (363.9 K), is less than the unit exergy of renewable energy systems under their normal domain of operations. One of these results regarding wind energy is that the 80/20 Pareto principle has equivalent unit exergy of 0.21 kW hexergy/kW henergy, corresponding to a wind velocity of three meters per second, which is less than the practical cut-in speed of a conventional wind turbine. Therefore, the Pareto principle may not be a measuring stick for wind energy and other resources. It has also been shown why the global average of rational exergy management efficiency of 0.21 is not improving because the Pareto principle limits it.","PeriodicalId":52308,"journal":{"name":"Journal of Energy Systems","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48116310","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Comparison of the performances of heuristic optimization algorithms PSO, ABC and GA for parameter estimation in the discharge processes of Li-NMC battery","authors":"Taner Çarkıt, M. Alçı","doi":"10.30521/jes.1094106","DOIUrl":"https://doi.org/10.30521/jes.1094106","url":null,"abstract":"The effects of the studies performed for the development of cells, which are the fundamental components of electrochemical battery units are felt in many different areas such as electric rail transportation systems, battery-based energy storage systems, battery units in electric vehicles, and energy storage units for individual use. For this goal, studies conducted by other searchers in the similar field have been investigated. In this paper, optimization techniques are used to guess the model parameters with major righteousness using the electrical equivalent circuit model of the battery. The discharge processes of the 18650 cylindrical type 2000 mAh Li-NCM battery cell with 1 A pulsed constant current at 25 ºC have been investigated. The real parameter values obtained have been transferred to the electrical equivalent circuit model. The open circuit voltage is determined as a functional term depending on the state of current supply level by using the curve fitting method in the Matlab. Studies have been carried out on particle swarm optimization algorithm, artificial bee colony algorithm, and genetic algorithm to estimate the battery output terminal voltage by using the open circuit voltage. Comparisons have been made and differences have been analyzed between the technics by using different statistical methods of true error values, the correct prediction ability, and response speed. As a result, the optimization method that makes the most accurate estimation has been determined.","PeriodicalId":52308,"journal":{"name":"Journal of Energy Systems","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49203541","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Usage and efficiency analysis of electricity generated by PV power plant in a marina or industrial facility","authors":"A. Dal","doi":"10.30521/jes.1054133","DOIUrl":"https://doi.org/10.30521/jes.1054133","url":null,"abstract":"In this study, the analysis of the usage efficiency and the time allocation to cover the initial investment cost of a PV power plant to be installed in an industrial facility having constant electricity consumption monthly and a yacht marina having fluctuating electricity consumption in a year (equal yearly electricity in each in total) within the installation assumption of same conditions of PV plant has been done. The PV power plant data with 680 kWp power and located at the same latitude as the yacht marina in the center of Mediterranean were used. For this purpose, it has been calculated that the PV power plant installed power required for the annual electricity need of the yacht marina will be 1357 kWp. With this power, 2,141,117 kWh of electricity has been produced annually and the yacht marina/industrial facility need has been supplied. In addition, the Net Present Value (NPV) was used to calculate the coverage period for the initial investment cost of the PV plant. In the calculations, it has been determined that the time to cover the initial investment cost is 4.31 years in the yacht marina and 4.37 years in the industrial facility. This result showed that installing PV power plants in marinas would be 1.5% more advantageous than other industrial facilities.","PeriodicalId":52308,"journal":{"name":"Journal of Energy Systems","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43368155","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Forecasting of monthly electricity generation from the conventional and renewable resources following the corona virus pandemic in Turkey","authors":"E. Kurt, R. Kasap, Kayhan Çelik","doi":"10.30521/jes.1106313","DOIUrl":"https://doi.org/10.30521/jes.1106313","url":null,"abstract":"In the present paper, a forecasting study on the monthly electricity generation of Türkiye from the conventional and renewable resources is performed. The effect of the CoVid-19 pandemic on the sector has been considered. For this aim, the trend before the pandemic has been initially considered and later the post-pandemic situation has been handled. It has been observed that the electricity generation supply/demand mechanism changes drastically compared to the pre- and post-pandemic cases. The rate of the generation from the renewable resources especially shows a sharp variation compared to the rates from the fossil fuels. According to the forecasting scenario, in 2021, the electricity generation shows different attitudes with regard to the resources used. In 2022, especially increasing trends are expected for wind, biogas, natural gas, imported coal and fuel oil, whereas diesel and mineral coal are expected to be decreased in Türkiye.","PeriodicalId":52308,"journal":{"name":"Journal of Energy Systems","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48436662","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Power System Reliability Assessment— A Review on Analysis and Evaluation Methods","authors":"Selahattin Garip, Saban Özdemir, N. Altin","doi":"10.30521/jes.1099618","DOIUrl":"https://doi.org/10.30521/jes.1099618","url":null,"abstract":"The structures of power systems and their capacity have been updated significantly from time to time. Therefore, a reliability analysis is an essential issue in the planning, designing, and operation of electric power systems. Thus, a number of methods have been proposed. These are grouped as analytical based methods, simulation-based methods, and hybrid methods. Some methods like Monte Carlo, Markov etc., developed and some indices such as interruption indices, energy-oriented indices, are used for the evaluation. The purpose of this review study is to investigate the reliability analysis approaches, methods and difficulties, and to report importance of the reliability analysis in power systems. Therefore, reliability indices and evaluation methods and models of evaluation of power system are listed and explained. Besides, modeling and computational burden and complexity and problems are discussed. The importance of reliability analysis for emerging power systems is examined and explained.","PeriodicalId":52308,"journal":{"name":"Journal of Energy Systems","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45534668","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Design a clamp based active filter for the single stage voltage boost small power grid-connected system","authors":"Bharat Modi, M. Lalwani","doi":"10.30521/jes.987202","DOIUrl":"https://doi.org/10.30521/jes.987202","url":null,"abstract":"Generally, two-stage voltage conversion is preferred for low-voltage DC sources such as PV (photovoltaic) modules, fuel cells, batteries, and super-capacitors however it is not suitable for the small power grid-connected system due to the cost and size. This work considers a single-stage, voltage level enhancement technique with a modified existing system. However, due to the clipped waveform, its output contains low-order harmonics. We design and implement an active filter, based on a clamper circuit to eliminate this clipped waveform. This filter has two tasks. First, detect the lower order harmonics then generate and add friendly harmonics. In our terminology, friendly harmonics are opposite in polarity with the low-frequency harmonics and the same polarity with the fundamental frequency. To prove the novelty, a comparative analysis with the existing strategy is also explained here. We also attempt to depict at least a 0.8% addition reduction in total harmonic distortion by comparing it with another methodology.","PeriodicalId":52308,"journal":{"name":"Journal of Energy Systems","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45027598","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Fixed and adjusted optimal tilt angle of solar panels in three cities in Albania","authors":"Urim Buzra, Driada Mitrushi, Eduart Serdari, D. Halili, Valbona Muda","doi":"10.30521/jes.952260","DOIUrl":"https://doi.org/10.30521/jes.952260","url":null,"abstract":"In this paper, we are concerned about optimal tilt angle choice of solar panels installation in three cities in Albania. The optimal tilt angle of solar panels is a crucial parameter for a high performance of solar energy systems. Solar energy systems can be tracking systems or fixed systems, fixed tilt angle determination and adjustable tilt angle evaluation of solar panels is an important issue to solve. In this study, Bernard-Menguy-Schwartz (BMS) model is used to determine the yearly and seasonally optimum tilt angle of the solar panels in three cities in Albania. The determination of the optimum tilt angle is made considering the fact that the solar energy reaching the solar panels has maximum value for optimum tilt angle. The yearly optimum tilt angle of the solar panels for the cities: Tirana (41.3275° N, 19.8187° E), Kuksi (42.0807° N, 20.4143° E) and Vlora (40.4661° N, 19.4914° E) are respectively 38o, 39o and 37o. It should be noted that, the yearly optimal tilt angle of solar panels based on the above mathematical model is almost equal to the latitude of the location. A suggestion of seasonably adjustable tilt angle is made. In addition, seasonally or adjusted tilt angles of solar panels were compared with yearly optimal tilt angle.","PeriodicalId":52308,"journal":{"name":"Journal of Energy Systems","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43786776","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Investigation of the performance of ground-coupled heat exchanger technology for tempering air","authors":"M. Gooroochurn, Maheshsingh Mungur, Heman Shamachurn, Yashwansingh Surnam, Fardeen Mandarkhan, Devin Bhoodoo","doi":"10.30521/jes.1058233","DOIUrl":"https://doi.org/10.30521/jes.1058233","url":null,"abstract":"A horizontal ground heat exchanger has been applied as a simpler sustainability measure in buildings compared to its vertical counterpart, making it more suitable for residential application. A lack of contextual scientific findings within the specific construction culture has precluded its widespread application in the developing world. In this study, an experimental and simulation investigation was carried out on the thermal performance of an air-based horizontal ground-coupled heat exchanger buried 3 m below the ground. The study was performed in the tropical climate of Mauritius with a focus on space cooling. The ground temperature and air temperature inside the pipeline at several locations of the installation was measured. A CFD simulation model was developed and calibrated against the experimental data, which allowed further analyses on the influence of system parameters on performance. The study allowed to confirm the performance of the technology for application as a sustainability measure in the local construction industry and to identify practical challenge that need to be addressed. A drop in temperature of up to 5C was achieved at 2.3 m/s and 8C at 4 m/s. The latter result holds promise to achieve thermal comfort by achieving indoor air temperature of 27 C or lower when ambient air is at 33-34C during typical summer periods.","PeriodicalId":52308,"journal":{"name":"Journal of Energy Systems","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43465378","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Analysis and optimizes of hybrid wind and solar photovoltaic generation system for off-grid small village","authors":"Nabaz Mohammedalı Rasool, S. Abbasoğlu, Mehrshad Hashemipour","doi":"10.30521/jes.985078","DOIUrl":"https://doi.org/10.30521/jes.985078","url":null,"abstract":"As an effective means of providing power to remote and off-grid areas of developing countries, where rural electrification problems are most common, hybrid renewable energy systems are considered. HOMER simulated and configured wind turbine, photovoltaic, battery bank, and converter for the electricity demand of the Mander rural community, which has 37 families with household sizes of 7 members, as a remote village in Northern Iraq in this article. The hypothesis project was also evaluated using the parameters Net Present Value and Simple Payback Period. Daily energy consumption of 173,120 kWh and peak electricity consumption of 32,14 kW were measured for the outcome of the selected site. The proposed system produced 68,458 kWh/yr (13.7 percent) by the wind turbine, PV created 432,354 kWh/yr. (86.3 percent), and 265 operating batteries with a total operating cost (TOC) and costs of energy (COE) of $9,195 and 0.365 $/kWh, respectively. This survey emphasized the role of solar photovoltaic and wind turbine as hybrid renewable energy systems HRESs in the sustainable supply of electricity in rural areas of northern Iraq.","PeriodicalId":52308,"journal":{"name":"Journal of Energy Systems","volume":" 30","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41255070","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Performance assessment of a magnetohydrodynamic power generation system: Division of the exergy destruction rate into its sub-portions","authors":"Prabin Haloi, T. Gogoi","doi":"10.30521/jes.1035144","DOIUrl":"https://doi.org/10.30521/jes.1035144","url":null,"abstract":"<jats:p xml:lang=\"tr\" />","PeriodicalId":52308,"journal":{"name":"Journal of Energy Systems","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41406347","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}