EngRN: Materials in Energy (Topic)最新文献

Revealing the Sodium Storage Behavior of Biomass-Derived Hard Carbon by Using Pure Lignin and Cellulose as Model Precursors 以纯木质素和纤维素为模型前体揭示生物质衍生硬碳的钠储存行为

EngRN: Materials in Energy (Topic) Pub Date : 2022-03-01 DOI: 10.2139/ssrn.3885509

Xi-Shuo Wu, Xiao-Ling Dong, Bohao Wang, Jiabing Xia, Wen‐Cui Li

引用次数: 15

Lithium-Ionic Control of Magnetism Through Spin Capacitance and Conversion 锂离子通过自旋电容和转换控制磁性

EngRN: Materials in Energy (Topic) Pub Date : 2021-02-18 DOI: 10.2139/ssrn.3788469

Feng-jun Zhang, Zhaohui Li, Q. Xia, Qinghua Zhang, C. Ge, Yanxue Chen, Xiangkun Li, Leqing Zhang, Kai Wang, Hongsen Li, Shandong Li, Y. Long, L. Gu, Shishen Yan, G. Miao, Qiang Li

{"title":"Lithium-Ionic Control of Magnetism Through Spin Capacitance and Conversion","authors":"Feng-jun Zhang, Zhaohui Li, Q. Xia, Qinghua Zhang, C. Ge, Yanxue Chen, Xiangkun Li, Leqing Zhang, Kai Wang, Hongsen Li, Shandong Li, Y. Long, L. Gu, Shishen Yan, G. Miao, Qiang Li","doi":"10.2139/ssrn.3788469","DOIUrl":"https://doi.org/10.2139/ssrn.3788469","url":null,"abstract":"Magnetoelectric (ME) coupling has gradually developed into one of the core means of advancing ultralow-power memory, logic and sensor technologies. Among various strategies, magneto-ionic control of magnetism based on mechanism such as redox, intercalation/deintercalation, and charge accumulation can be achieved in ion battery or capacitor systems. In this work, we demonstrate a ME effect originating from the spin capacitance, combining the advantages of intercalation batteries and supercapacitors. A giant, fast and reversible modulation on the saturation magnetization of ferromagnetic Fe is achieved by lithium ions motion across the Fe/Li2O interface at no more than 1 V. Furthermore, the magnetic evolution driven by the conversion reaction between FeO and Fe over a larger voltage range demonstrates ferromagnetic ordering of the FeO surface. These findings not only open new perspectives for developing high-performance magneto-ionic devices, but also are crucial to designing spintronic devices composed of iron and oxide multilayer structures.","PeriodicalId":337638,"journal":{"name":"EngRN: Materials in Energy (Topic)","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128448347","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}

引用次数: 0

Promoting Renewable Energy: How Fares the Philippines? 推广可再生能源:菲律宾进展如何?

EngRN: Materials in Energy (Topic) Pub Date : 2020-12-09 DOI: 10.2139/ssrn.3745492

Josef T. Yap, Joyce Marie Lagac

{"title":"Promoting Renewable Energy: How Fares the Philippines?","authors":"Josef T. Yap, Joyce Marie Lagac","doi":"10.2139/ssrn.3745492","DOIUrl":"https://doi.org/10.2139/ssrn.3745492","url":null,"abstract":"Sustainability is a key component of energy security. To help achieve the global long-term goal of zero-carbon emissions by 2050, the Philippine government has implemented laws, policies, and programs to increase the share of renewable energy (RE). An important example is the feed-in-tariff (FiT) scheme. The share of RE in electricity generation, however, has fallen from 45.4% in 1990 to 21% in 2019, a clear indication that the interventions have not been effective. Main constraints to the expansion of RE are formidable, which include market-based factors, technology inertia, market failure, and political economy issues. Even if policies are designed to overcome these constraints, there has been a delay in the implementation of some of them; but more importantly, many of the interventions do not adhere to the principles underlying sound industrial policy. In particular, policies should abide by the principle of embeddedness, which refers to the coordination between the public sector and private firms that allows the former to be aware of the constraints and opportunities of the latter. To address this problem, policymakers must incorporate said principles and streamline future interventions by anchoring them to three aspects: the moratorium on greenfield coal plants, the study on Competitive Renewable Energy Zones (CREZ), and the serious consideration of incorporating nuclear power in the energy mix. Meanwhile, the COVID-19 pandemic has provided an opportunity to “build back better”. Studies have shown that some “green” fiscal recovery measures have strong multiplier effects and, at the same time, promote sustainability. An example is retrofitting buildings to enhance energy efficiency. The experience of other Southeast Asian countries in designing interventions can be useful but policymakers should acknowledge that one size does not fit all.","PeriodicalId":337638,"journal":{"name":"EngRN: Materials in Energy (Topic)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126875531","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}

引用次数: 3

Development of Energy Harvesting With Water Droplet Continuous Flow Over Nanohollow and Nanostalagmite of Taro Leaf Surface 水滴在芋头叶片表面纳米空心和纳米石笋上连续流动的能量收集研究进展

EngRN: Materials in Energy (Topic) Pub Date : 2020-10-31 DOI: 10.15587/1729-4061.2020.214263

K. M. T. Negara, N. Hamidi, D. Widhiyanuriyawan, I. Wardana

{"title":"Development of Energy Harvesting With Water Droplet Continuous Flow Over Nanohollow and Nanostalagmite of Taro Leaf Surface","authors":"K. M. T. Negara, N. Hamidi, D. Widhiyanuriyawan, I. Wardana","doi":"10.15587/1729-4061.2020.214263","DOIUrl":"https://doi.org/10.15587/1729-4061.2020.214263","url":null,"abstract":"Electrical energy is generated by harvesting the induced charge in metal electrodes and by connecting the surface of the taro leaf , coated with the electrodes underneath , to the bridge rectifier and capacitor. This discussion was supported by a Scanning Electron Microscope analysis on the surface of taro leaves. The electrical energy was measured using a bridge rectifier at various water droplet rate in contact with leaf, and at various slope of the taro leaves . The results showed that the slope of the leaf surface contact area with water droplets and taro leaf increase s the generation of electric voltage. The greater the tilt angle of the taro leaf surface causing more electrons to jump out of orbit. The surface of taro leaves made by a cluster of nanostalagmites with other nanostalagmites separated by nano scale hollow s that tend to repel water droplets. The r esults from the repulsion of nanostalagmites at a very small radius of the nanostalagmite structure were v ery high surface tension or surface energy. The electron jump is mainly generated due to the high surface tension energy of the nan o stalagmite structure that when it comes into contact with ionized H + and OH - in the water droplet , it produce s hydrogen (H 2 ). H 2 is trapped in the nanohollows between the nan o stalagmites. Due to the dense morphology of nanostalagmite, H 2 will tend to be pushed upwards to force the water droplet. As a result, the surface tension will be higher and the surface will be more superhydropobic thereby increasing the electrical voltage . T he morphology and the tilt angle have an important role in generating electrical energy. Thus , it is necessary to do further research on superhidrophobic characteristics as a solution in the future to overcome the problem of electrical energy","PeriodicalId":337638,"journal":{"name":"EngRN: Materials in Energy (Topic)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132526314","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}

引用次数: 0

Influence of Large Molecular Guest Species on the Formation of CH 4 and CO 2 Hydrates 大分子客体物质对甲烷和二氧化碳水合物形成的影响

EngRN: Materials in Energy (Topic) Pub Date : 2020-10-09 DOI: 10.2139/ssrn.3691244

Asheesh Kumar, Nagu Daraboina, Praveen Linga, R. Kumar

引用次数: 0

One-Pot Synthesis of High Density Aviation Fuel with Cyclohexanol 环己醇一锅法合成高密度航空燃料

EngRN: Materials in Energy (Topic) Pub Date : 2020-09-28 DOI: 10.2139/ssrn.3701196

Dr. Vaishali R. Umrigar, Darshak Panchani, Ajay Maiwala, A. Khandelwal, N. Patel, Jenish Bhanderi

{"title":"One-Pot Synthesis of High Density Aviation Fuel with Cyclohexanol","authors":"Dr. Vaishali R. Umrigar, Darshak Panchani, Ajay Maiwala, A. Khandelwal, N. Patel, Jenish Bhanderi","doi":"10.2139/ssrn.3701196","DOIUrl":"https://doi.org/10.2139/ssrn.3701196","url":null,"abstract":"Due to exhaustion of fossil fuels, there is a keen need for the alternative solution to fuel reliance. Globally, jet fuels account for 12% of current used liquid transportation fuels. Production of branched decalins, one of the most advanced jet fuel is in research with high density, low freezing point and high thermal stability. Decalins being most thermally stable component of jet fuels due to the unique bicyclic structure with hydrogen-detonating capability are in demand for synthesis. In the present study, the reaction is carried out in a single reactor using H2SO4 as catalyst with N2 as an inert. \u0000 \u0000The experiment comprises of three steps in single reactor by managing addition and speed of mixing of reactant and catalyst. \u00001) Oligomerisation in N2 atmosphere \u00002) Neutralisation with NaOH \u00003) Separation and drying New and simple routes for branched decalins from cyclic alcohols and cyclic alkanes through alkylation and hydride transfer in a one-pot process have been presented. The reaction mass is analysed by GC and GCMS for quantification of the products. Further operating parameters such as temperature, concentration and feed addition time and stirring speed are studied in detailed.","PeriodicalId":337638,"journal":{"name":"EngRN: Materials in Energy (Topic)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120954699","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}

引用次数: 1

Thermo-Structural Analysis of Carbon Fibre-Ni Based Super Alloy Composite Employed in Gas Turbines 燃气轮机用碳纤维-镍基超级合金复合材料的热结构分析

EngRN: Materials in Energy (Topic) Pub Date : 2020-09-07 DOI: 10.2139/ssrn.3696518

Ankit Dhoka

{"title":"Thermo-Structural Analysis of Carbon Fibre-Ni Based Super Alloy Composite Employed in Gas Turbines","authors":"Ankit Dhoka","doi":"10.2139/ssrn.3696518","DOIUrl":"https://doi.org/10.2139/ssrn.3696518","url":null,"abstract":"A computational analysis was carried out on two different materials of turbine blades, namely Inconel MA754 and Nimonic 80A, in order to determine their structural and thermal properties at elevated temperatures. Long carbon fibers of uniform length were used and deposited at varying thicknesses ranging from 1 mm to 4 mm, on the top surface of turbine blades and then analyzed for its performance. It is seen that the carbon fibers (IM10) embedded in the super alloys drastically improve the load bearing parameters of the configurations being analyzed. The improvement in structural load carrying ability is a result of higher Young's modulus primarily. Subsequent analysis with higher volume fraction of the fibers indicated saturation of performance at about 70% volume fraction for 4 mm fibers and significant improvement beyond it for the 1 mm fibers. With improvement in the load bearing characteristics the blade with fibers embedded into a tube like structure at 3 sections were configured and A thermal analysis of the same underscores the effectiveness of the 4 mm fibers in undergoing much reduced principal strains than other configurations. This is seen to be a result of insulation of the top surface from increase in temperature, which significantly reduces the thermal expansion, especially at the free end. This is in contrast to other configurations, where the low volume fraction of fibers resulted in high principal strain.","PeriodicalId":337638,"journal":{"name":"EngRN: Materials in Energy (Topic)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133427423","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}

引用次数: 0

A Different Theoretical View on The Modified Black-Body Radiation Setup Using Anisotropic Medium 各向异性介质修正黑体辐射设置的不同理论观点

EngRN: Materials in Energy (Topic) Pub Date : 2020-09-01 DOI: 10.2139/ssrn.3693284

Jalal Gholinejad

引用次数: 0

Design and Implementation of an Intelligent Gas Cylinder Valve Regulating System Using Solenoid 基于电磁阀的智能气瓶阀门调节系统的设计与实现

EngRN: Materials in Energy (Topic) Pub Date : 2020-08-31 DOI: 10.5121/ijcsea.2020.10402

Ebenezer Narh Odonkor

{"title":"Design and Implementation of an Intelligent Gas Cylinder Valve Regulating System Using Solenoid","authors":"Ebenezer Narh Odonkor","doi":"10.5121/ijcsea.2020.10402","DOIUrl":"https://doi.org/10.5121/ijcsea.2020.10402","url":null,"abstract":"Developed and developing nations like Ghana frequently experience fire outbreaks which area major problem across the globe. Some causes of such fire outbreaks are due to Leakage gas, electrical fault. Some attendant problems are accidents, loss of life and damage to properties. National fire service stations may be the answer to these conditions in Ghana but few stations are built in some specific places in Ghana. This paper proposed a design and implementation of an intelligent gas stove valve regulating system using Solenoid Valve. Temperature sensor, gas sensor and 555 Timer were used. The proposed system will detect time setting for cooking and cut off gas flow automatically to the stove when food is cooked, gas leakage is detected and when surround temperature is above the threshold. Proteus software is used for designing and simulating of the circuit. Programming was done using the Arduino software. Microcontroller ATMEGA 328 serves as the heart of the design. A Liquid Crystal Display (LCD) is used to show the condition of the stove. In addition, a buzzer is used to sound an alarm when food is cooked. The system has facilities to shut-off gas stove regulator automatically when food is cooked, gas leakage is detected or when a high temperature is detected.","PeriodicalId":337638,"journal":{"name":"EngRN: Materials in Energy (Topic)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115898819","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}

引用次数: 0

An Experimental Analysis of DC Magnetic Blowout High-Speed Circuit Breakers’ Parameters 直流磁爆高速断路器参数的实验分析

EngRN: Materials in Energy (Topic) Pub Date : 2020-08-31 DOI: 10.15587/1729-4061.2020.210232

A. Rojek

{"title":"An Experimental Analysis of DC Magnetic Blowout High-Speed Circuit Breakers’ Parameters","authors":"A. Rojek","doi":"10.15587/1729-4061.2020.210232","DOIUrl":"https://doi.org/10.15587/1729-4061.2020.210232","url":null,"abstract":"High-speed circuit breakers (HSCB) used in DC circuits are one of the basic elements of overload, short-circuit and electric shock protection. Such breakers are used in transport (trams, trolleybuses, subways and railways) in electric power supply facilities and in vehicles. The performance and capability of limiting the current depend on the HSCB design and solutions applied in it. The circuit parameters, particularly its inductance also affect the performance. Additionally, each DC breaking in the RL circuit is accompanied by overvoltages whose level depends on the circuit parameters and breaker design. The paper discussed the process of direct current breaking by magnetic blowout high-speed circuit breakers and factors that affect the HSCB performance, i. e. opening time and arcing time. The influence of the circuit parameters and HSCB design on the value of arc voltage is outlined. The results of laboratory tests of 4 types of high-speed circuit breakers produced in Europe are presented. The test results were used to analyze the effect of current changes in the short circuit on the time of current breaking and the value of switching overvoltages – arc voltage. The results of simulation of the short-circuit breaking in the RL DC circuit made at the rate-of-rise of current in the circuit are presented. Based on the tests and simulations, the current breaking times, values of arc voltage generated in this process and arc energy that is acquired and dissipated by the arc chamber are determined. The objective of the tests and simulations was to answer the question whether it is possible to turn off direct current quickly without generating high arc voltage values – overvoltages in the circuit and how di/dt changes should be formed by a high-speed circuit breaker to achieve the shortest possible time with the lowest possible arc voltage and its lowest energy","PeriodicalId":337638,"journal":{"name":"EngRN: Materials in Energy (Topic)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129222134","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}

引用次数: 0