International journal of energy science最新文献

{"title":"Combustion characteristics of a lean-burned CBM engine with hydrogen direction injection","authors":"W. Jia","doi":"10.54097/ije.v1i1.3227","DOIUrl":"https://doi.org/10.54097/ije.v1i1.3227","url":null,"abstract":"A 3D model of a CBM engine was established, and the combustion modes under different injection parameters and ignition matching conditions were studied by using methane PFI+ hydrogen DI injection method. Flame propagation, flame structure and engine indication thermal efficiency under the three combustion modes were analyzed. The results show that when the interval between injection and ignition is less than 10°CA, the flame structure of plume ignition will be formed; when the interval between injection and ignition is greater than 10°CA and less than 16°CA, the flame form of concentration stratification will be formed; when the interval is greater than 16°CA, the homogeneous flame structure will be formed. The flame propagation speed of plume ignition is significantly higher than that of the other two combustion modes. Under the three combustion modes, the injection and ignition schemes are adjusted several times. When the injection time is -8°CA ATDC and the ignition time is -2°CA ATDC, the flame structure is the plume ignition structure. The indicated thermal efficiency is higher than the other two combustion modes, and the indicated thermal efficiency of the engine is up to 52.8%.","PeriodicalId":14093,"journal":{"name":"International journal of energy science","volume":"47 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88440098","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":"Efficient use of solar energy","authors":"Jingshang Feng","doi":"10.54097/ije.v1i1.3229","DOIUrl":"https://doi.org/10.54097/ije.v1i1.3229","url":null,"abstract":"This paper is mainly about the use of solar energy in life to make a summary, and how to improve the utilization of these aspects to make suggestions. Sunlight transmits electricity to the earth all the time. If the total radiation power from sunlight to the earth is converted into power generation power, it can reach 1.77× kW, which is several hundred million times larger than the current global per capita consumption of electricity. There are not only a lot of sunlight, but also all green energy sources from sunlight, such as wind energy, tidal energy, microbial energy, hydraulic energy, etc., all belong to renewable energy sources. As long as there is sunlight, renewable energy sources are as constant as sunlight. In the process of the efficient development and utilization of solar energy, the photovoltaic utilization of nuclear energy has become the fastest progress around the whole world in recent years, the most vitality of the scientific research field.","PeriodicalId":14093,"journal":{"name":"International journal of energy science","volume":"17 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74731041","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":"The research of the contribution of big data in enhancing power battery safety","authors":"Yufan Wang","doi":"10.54097/ije.v1i1.3226","DOIUrl":"https://doi.org/10.54097/ije.v1i1.3226","url":null,"abstract":"The use of oil and gas is the main cause behind the increased impact of severe weather over the past two decades. In the use of oil and natural gas, fuel powered vehicles account for a large part. Therefore, at present, countries are vigorously promoting the settlement of new energy vehicles. With the support of national policies, new energy manufacturers are springing up. There are also many large factories with good qualifications, but there are also many small factories mixed with other factories. With the increase of new energy vehicles, more and more traffic accidents caused by new energy vehicles, especially the self-destruction of new energy vehicles caused by power batteries. Therefore, this paper attempts to make suggestions and analysis on the production, charging, driving and handling of power batteries after accidents through big data monitoring.","PeriodicalId":14093,"journal":{"name":"International journal of energy science","volume":"76 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83827861","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":"Safety of Lithium Battery for New Energy Vehicles: A Literature Review","authors":"Congzheng Wu","doi":"10.54097/ije.v1i1.3228","DOIUrl":"https://doi.org/10.54097/ije.v1i1.3228","url":null,"abstract":"An overview of the causes of lithium-ion battery fires, what types of extinguishing agents are used when a fire occurs, and how to effectively prevent fires from occurring. It describes in detail the potential factors required for lithium-ion battery fires and related real-world cases, the advantages and disadvantages of various extinguishing agents and whether they can be used in automobiles, and the lithium-ion battery safety systems that have been designed and how they work.","PeriodicalId":14093,"journal":{"name":"International journal of energy science","volume":"32 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82390343","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":"Research on new energy Marketing innovation","authors":"Qingfang Guo, Yuan Xia, Xinyue Zhang, Ziheng Wang","doi":"10.54097/ije.v1i1.2021","DOIUrl":"https://doi.org/10.54097/ije.v1i1.2021","url":null,"abstract":"On September 22, 2021, the Party Central Committee, with General Secretary Xi as the core, made a major decision to achieve carbon peaking and carbon neutrality, with the following main objectives. By 2025, an economic system of green, low-carbon and cyclic development will take initial shape, laying a solid foundation for achieving carbon peaking and carbon neutrality. By 2030, the comprehensive green transformation of economic and social development has achieved significant results, and the energy utilization efficiency of key energy-consuming industries has reached the international advanced level. By 2060, a green low-carbon cycle development of the economic system and a clean, low-carbon, safe and efficient energy system will be fully established, carbon neutral goals will be successfully achieved, fruitful results will be achieved in the construction of ecological civilization, and a new realm of harmonious coexistence between man and nature will be created. In order to achieve the goal, \"on the complete and accurate implementation of the new development concept to do a good job of carbon peak carbon neutral views\" clearly mentioned, accelerate the construction of low-carbon transportation system, the promotion of energy-saving low-carbon transport, this advocacy brings opportunities for the development of new energy vehicles, new energy vehicles refers to is the use of non-conventional automotive fuel as a power source, integrated vehicle power control and drive aspects of the Advanced technology, formed with new technology, new structure, advanced technical principles of the vehicle. However, under the role of the market and external environment, although the sales of new energy vehicles are developing in an upward trend, a series of problems exist in them leading to a bottleneck to be broken through. This paper provides an in-depth analysis of this phenomenon and provides innovative points for the development of the new energy vehicle industry from the marketing perspective to promote the development of the new energy vehicle industry.","PeriodicalId":14093,"journal":{"name":"International journal of energy science","volume":"14 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80250227","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":"Five-level DTC-ANN with Balancing Strategy of DSIM","authors":"E. Benyoussef, S. Barkat","doi":"10.46300/91010.2022.16.8","DOIUrl":"https://doi.org/10.46300/91010.2022.16.8","url":null,"abstract":"This paper presents an artificial neural networks controller devoted to improve the performance of direct torque control strategy of double star induction machine fed by two five-level diode-clamped inverters. The resulting control scheme presents enough degrees of freedom to control both torque and flux with very low ripple and high dynamics. Unfortunately, the diode-clamped inverter has an inherent problem of DC-link capacitors voltages variations. To overcome this problem, an artificial neural network based direct torque control with balancing strategy is proposed to suppress the unbalance of DC-link capacitor voltages. Simulations results are given to show the effectiveness and the robustness of the suggested control method.","PeriodicalId":14093,"journal":{"name":"International journal of energy science","volume":"27 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77697938","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":"Analysing the Impact of the Monetary Policy Dynamics on Financial Imbalances- A Model Approach","authors":"Wael Bakhit","doi":"10.46300/91010.2022.16.2","DOIUrl":"https://doi.org/10.46300/91010.2022.16.2","url":null,"abstract":"This paper employs a quarterly time series to determine the timing of structural breaks for interest rates in USA over the last 60 years. The Chow test is used for investigating the non-stationary, where the date of the potential break is assumed to be known. Moreover, an empirically examination of the financial sector to check if it is positively related to deviations from an assumed interest rate as given in a standard Taylor rule. The empirical analysis is strengthened by analysing the rule from a historical perspective and look at the effect of setting the interest rate by the central bank on financial imbalances. The empirical evidence indicates that deviation in monetary policy has a potential causal factor in the build up of financial imbalances and the subsequent crisis where macro prudential intervention could have beneficial effect. Thus, my findings tend to support the view which states that the probable existence of central banks has been one source of global financial crisis since the past decade.","PeriodicalId":14093,"journal":{"name":"International journal of energy science","volume":"75 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84523141","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":"Multiscale Convergence Optimization in Constrained Molecular Dynamics Simulations","authors":"N. Nafati, S. Antonczak, J. Topin, J. Gołȩbiowski","doi":"10.46300/91010.2022.16.7","DOIUrl":"https://doi.org/10.46300/91010.2022.16.7","url":null,"abstract":"The energy analysis is essential for studying chemical or biochemical reactions but also for characterizing interactions between two protagonists. Molecular Dynamics Simulations are well suited to sampling interaction structures but under minimum energy. To sample unstable or high energy structures, it is necessary to apply a bias-constraint in the simulation, in order to maintain the system in a stable energy state. In MD constrained simulations of \"\"Umbrella Sampling\"\" type, the phenomenon of ligand-receptor dissociation is divided into a series of windows (space sampling) in which the simulation time is fixed in advance. A step of de-biasing and statistical processing then allows accessing to the Potential Force Medium (PMF) of the studied process. In this context, we have developed an algorithm that optimizes the DM computation time regarding each reaction coordinate (distance between the ligand and the receptor); and thus can dynamically adjust the sampling time in each US-Window. The data processing consists in studying the convergence of the distributions of the coordinate constraint and its performance is tested on different ligand-receptor systems. Its originality lies in the used processing technique which combines wavelet thresholding with statistical-tests decision in relation to distribution convergence. In this paper, we briefly describe a Molecular Dynamic Simulation, then by assumption we consider that distribution data are series of random-variables vectors obeying to a normal probality law. These vectors are first analyzed by a wavelet technique, thresholded and in a second step, their law probability is computed for comparison in terms of convergence. In this context, we give the result of PMF and computation time according to statistic-tests convergence criteria, such as Kolmogorov Smirnov, Student tTest, and ANOVA Tests. We also compare these results with those obtained after a preprocessing with Gaussian low-pass filtering in order to follow the influence of thresholding. Finally, the results are discussed and analyzed regarding the contribution of the muli-scale processing and the more suited criteria for time optimization.","PeriodicalId":14093,"journal":{"name":"International journal of energy science","volume":"38 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84848019","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":"The Issues of the Improvement of the Methodology for the Assessment of Reforms","authors":"Samson Davoyan, A. Davoyan","doi":"10.46300/91010.2022.16.4","DOIUrl":"https://doi.org/10.46300/91010.2022.16.4","url":null,"abstract":"The purpose of this article is to suggest a new methodology that will give us an opportunity to create an Integral Index of Reforms (IIR) that will include seven indexes: KOF Index of Globalization, The Democracy Index, The Corruption Perception, The Human Development, Doing Business, The Global Competitiveness Index and The Index of Economic Freedom. From both scientific and empiric perspective it is supposed that the quantitive assessment of various reforms implemented in different countries based on presented indicators of seven indexes despite the new methodology that we suggest give us the opportunity to include much more indexes.","PeriodicalId":14093,"journal":{"name":"International journal of energy science","volume":"59 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76999761","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":"Simulating System for Technical Characteristic Analysis in Power Generation by Wind Turbine Generator","authors":"W. Srisongkram, N. Phanthuna","doi":"10.46300/91010.2022.16.1","DOIUrl":"https://doi.org/10.46300/91010.2022.16.1","url":null,"abstract":"This paper describes the design of the controlling and monitoring system for electricity quality from wind turbine. The 4-RMUT (Rajamangala University of Technology) network joined in this research in order to apply for educational learning as well. This research proposes two objectives as follows: firstly, inventing the prototype of wind turbine for generating electricity including analyses to increase and monitor its efficiency; finally, demonstrating the prototype with our students in order to increase more understanding in a class than ever. The conclusion and developing of this research were also transferred the technical knowledge to the electrical engineering student by discussion in the class. Furthermore, the technical discussion in the class was also improved the teaching efficiency and given more vision to the engineering student as well.","PeriodicalId":14093,"journal":{"name":"International journal of energy science","volume":"30 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85932049","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}