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Pilot Scale Tar Production from Morupule Coal Dust Through Flash Pyrolysis 煤尘闪速热解制焦油中试研究
2019 7th International Renewable and Sustainable Energy Conference (IRSEC) Pub Date : 2019-11-01 DOI: 10.1109/IRSEC48032.2019.9078314
Abigail Tamu, E. Muzenda, M. Rapoo, B. Patel
{"title":"Pilot Scale Tar Production from Morupule Coal Dust Through Flash Pyrolysis","authors":"Abigail Tamu, E. Muzenda, M. Rapoo, B. Patel","doi":"10.1109/IRSEC48032.2019.9078314","DOIUrl":"https://doi.org/10.1109/IRSEC48032.2019.9078314","url":null,"abstract":"The fourth industrial revolution promotes green and cleaner processes, pyrolysis being one of the strategies for waste utilization. In Palapye, Botswana, dust produced in the process of mining, beneficiation and utilization of coal at Morupule Mine and Power Plants causes serious health hazards to the employees, residents of Palapye and surrounding communities. Pyrolysis of coal dust is one of the wastes to energy technique that can be adopted to utilize waste coal dust. Botswana relies on imported tar to upgrade dusty roads while it has sufficient resources to produce its own tar from coal. One of the main products for pyrolysis of coal dust is tar which can be used to construct roads and pavements. This study utilizes coal dust from Morupule coal mine for tar production using flash pyrolysis in a batch reactor at pilot scale. Morupule coal dust was characterized before pyrolysis and the highest recorded yield is 22.9% kg at 600 C.","PeriodicalId":6671,"journal":{"name":"2019 7th International Renewable and Sustainable Energy Conference (IRSEC)","volume":"47 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91141342","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
Improvement of Conventional MPPT Techniques P&O and INC by Integration of Fuzzy Logic 模糊逻辑集成对传统MPPT技术P&O和INC的改进
2019 7th International Renewable and Sustainable Energy Conference (IRSEC) Pub Date : 2019-11-01 DOI: 10.1109/IRSEC48032.2019.9078330
Mohammed Zerouali, Salaheddine Zouirech, Abdelghani El Ougli, B. Tidhaf, Hafida Zrouri
{"title":"Improvement of Conventional MPPT Techniques P&O and INC by Integration of Fuzzy Logic","authors":"Mohammed Zerouali, Salaheddine Zouirech, Abdelghani El Ougli, B. Tidhaf, Hafida Zrouri","doi":"10.1109/IRSEC48032.2019.9078330","DOIUrl":"https://doi.org/10.1109/IRSEC48032.2019.9078330","url":null,"abstract":"This paper presents the most popular techniques used to track and extract maximum power point for a photovoltaic system as traditional ones: Perturb and Observe ‘P&O’, Increment of the conductance ‘INC’ or intelligent using Fuzzy logic FL. And by combining two techniques, P&O with the Fuzzy logic (Fuzzy-P&O) and the INC with the fuzzy (Fuzzy-INC), the proposed system allows us to generate more power and reduce the voltage ripple which guarantees a stable system. All modeling and simulations of different MPPT techniques are done under Matlab Simulink environment. Therefore, the simulation results show the performance and limitations of each algorithm and the efficiency of the combined techniques.","PeriodicalId":6671,"journal":{"name":"2019 7th International Renewable and Sustainable Energy Conference (IRSEC)","volume":"56 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91384877","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: 8
A Genetic Algorithm based Improve P&O-PI MPPT Controller for Stationary and Tracking Grid-Connected Photovoltaic System 静止与跟踪并网光伏系统基于遗传算法的改进P&O-PI MPPT控制器
2019 7th International Renewable and Sustainable Energy Conference (IRSEC) Pub Date : 2019-11-01 DOI: 10.1109/IRSEC48032.2019.9078304
L. Zaghba, M. Khennane, A. Borni, A. Fezzani, A. Bouchakour, I. H. Mahammed, S. H. Oudjana
{"title":"A Genetic Algorithm based Improve P&O-PI MPPT Controller for Stationary and Tracking Grid-Connected Photovoltaic System","authors":"L. Zaghba, M. Khennane, A. Borni, A. Fezzani, A. Bouchakour, I. H. Mahammed, S. H. Oudjana","doi":"10.1109/IRSEC48032.2019.9078304","DOIUrl":"https://doi.org/10.1109/IRSEC48032.2019.9078304","url":null,"abstract":"This paper deals the performance comparison and efficiencies of single-axis and dual-axis tracking PV system to an identical fixed-mount PV system for two typical clear sunny days (Ghardaia area), two typical days are chosen, the first day in winter and the second day in the summer. For the three types of PV systems, P&O-PI MPPT techniques optimized with a genetic algorithm is proposed. This paper has two different objectives. 1stly, a proposed MPPT technique has been presented to optimize P&O-PI controller via the GA technique to increase the tracking response of MPP with high efficiency and that improves the limitations of the traditional MPPT techniques. 2ndly, a performance comparison of efficiencies of single-axis and dual-axis tracking system and an identical fixed inclination system. Simulation results with MATLAB/SIMULINK are presented and discussed to verify the satisfactory performance of the proposed MPPT control, in which the optimized P&O-PI controller by GA algorithms gives the better performance. The simulation results also have shown that both single-axis and dual-axis are highly efficient in terms of the electrical energy output when compared to the fixed mount system. The results show the effectiveness of the tracking system of about 25% in energy efficiency.","PeriodicalId":6671,"journal":{"name":"2019 7th International Renewable and Sustainable Energy Conference (IRSEC)","volume":"105 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80770662","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: 4
SMC based MPPT to track the GMPP under Partial Shading 基于SMC的MPPT跟踪部分遮阳下的GMPP
2019 7th International Renewable and Sustainable Energy Conference (IRSEC) Pub Date : 2019-11-01 DOI: 10.1109/IRSEC48032.2019.9078190
M. Mokhlis, M. Ferfra, A. Abbou, Rafika EL Idrissi, C. C. Ahmed
{"title":"SMC based MPPT to track the GMPP under Partial Shading","authors":"M. Mokhlis, M. Ferfra, A. Abbou, Rafika EL Idrissi, C. C. Ahmed","doi":"10.1109/IRSEC48032.2019.9078190","DOIUrl":"https://doi.org/10.1109/IRSEC48032.2019.9078190","url":null,"abstract":"This paper presents a technique based on sliding mode controller to track the global maximum power point. This one is designed to control the power of a photovoltaic system composed of three photovoltaic modules, of a sepic converter and a resistive load. This technique is designed to distinguish the global maximum power in a curve composed of a multiple point of maximums. In fact, the multiple maximums appear when the insolation is non-uniform. The proposed technique consists of an algorithm able to locate the global maximum power and to generate the corresponding reference of voltage whenever the insolation changes. In addition, it consists of a sliding mode control able to follow the voltage reference by controlling the duty cycle of the sepic converter. The performances of the proposed approach have been tested and validated through computer simulation.","PeriodicalId":6671,"journal":{"name":"2019 7th International Renewable and Sustainable Energy Conference (IRSEC)","volume":"25 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81943396","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: 2
Study of Interaction of Hydrogen with Di-aza-substituted Sumanene Compounds 氢与二氮杂取代苏马烯化合物相互作用的研究
2019 7th International Renewable and Sustainable Energy Conference (IRSEC) Pub Date : 2019-11-01 DOI: 10.1109/IRSEC48032.2019.9078312
S. N. Derrar
{"title":"Study of Interaction of Hydrogen with Di-aza-substituted Sumanene Compounds","authors":"S. N. Derrar","doi":"10.1109/IRSEC48032.2019.9078312","DOIUrl":"https://doi.org/10.1109/IRSEC48032.2019.9078312","url":null,"abstract":"This DFT study aims at investigating hydrogen storage by the bowl-shaped sumanene molecule. Different models have been constructed, by substituting the rim positions of sumanene by nitrogen atoms. Subsequently, based on a comparison to pristine sumanene, effects of this nitrogen doping have been explored. Interaction energies between hydrogen molecule and the di-aza-substituted sumanene have been reported. The substitution position seems to govern the parameters studied, mainly, the interaction energy.","PeriodicalId":6671,"journal":{"name":"2019 7th International Renewable and Sustainable Energy Conference (IRSEC)","volume":"7 1","pages":"1-3"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78707243","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
Borohydride-based Solid-state Electrolytes for Lithium Batteries 锂电池用硼氢化物固态电解质
2019 7th International Renewable and Sustainable Energy Conference (IRSEC) Pub Date : 2019-11-01 DOI: 10.1109/IRSEC48032.2019.9078280
A. El Kharbachi, M. Sørby, M. Nygård, B. Hauback
{"title":"Borohydride-based Solid-state Electrolytes for Lithium Batteries","authors":"A. El Kharbachi, M. Sørby, M. Nygård, B. Hauback","doi":"10.1109/IRSEC48032.2019.9078280","DOIUrl":"https://doi.org/10.1109/IRSEC48032.2019.9078280","url":null,"abstract":"Properties of LiBH<inf>4</inf>-LiCl-P<inf>2</inf>S<inf>5</inf> composites are studied regarding their application as solid-state electrolyte for lithium batteries. The studied materials undergo an amorphization at 60°C, accompanied with Li<sup>+</sup> conduction increase. The measured ionic conductivity for the optimized borohydride-halide-sulfide system is about ~10<sup>−3</sup> S cm<sup>−1</sup> at room temperature with low activation energies for ions migration suitable for all-solid-state battery applications near room temperature.","PeriodicalId":6671,"journal":{"name":"2019 7th International Renewable and Sustainable Energy Conference (IRSEC)","volume":"20 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78953391","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: 2
Molecular Dynamics Simulations of Self-Assembled Polyethylene-Hexagonal Boron Nitride Composite and Its Thermal Conductivity 自组装聚乙烯-六方氮化硼复合材料的分子动力学模拟及其导热性能
2019 7th International Renewable and Sustainable Energy Conference (IRSEC) Pub Date : 2019-11-01 DOI: 10.1109/IRSEC48032.2019.9078254
One-Sun Lee, Mehamed Ali, A. Mabrouk, Ahmed A Abdala
{"title":"Molecular Dynamics Simulations of Self-Assembled Polyethylene-Hexagonal Boron Nitride Composite and Its Thermal Conductivity","authors":"One-Sun Lee, Mehamed Ali, A. Mabrouk, Ahmed A Abdala","doi":"10.1109/IRSEC48032.2019.9078254","DOIUrl":"https://doi.org/10.1109/IRSEC48032.2019.9078254","url":null,"abstract":"The demand of the heat dissipating polymer-based composites is increasing because of the processibility, light weight, corrosion resistance, and low cost of polymers regardless of their low thermal conductivity. It is well known that 3-dimensional arrangement and the relative orientation of the filler particles with high thermal conductivity significantly influence the composite thermal conductivity. To study the relation between the composite internal structure and the thermal conductivity, we developed the atomistic model and measure the thermal conductivity of composites. The self-assembled structure of the composite composed of polyethylene (PE) matrix and hexagonal boron nitride (hBN) sheets is obtained at the atomistic level using annealing molecular dynamics simulations. We found that the hBN sheets prefer a stacked structure because of strong electrostatic interactions, and they form a segregated domain inside the polymer matrix. The effect of hBN concentration on the thermal conductivity is calculated and were found to be in good agreement with the experimental results.","PeriodicalId":6671,"journal":{"name":"2019 7th International Renewable and Sustainable Energy Conference (IRSEC)","volume":"26 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74058557","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
Functionalized Graphite Nanoplatelet by Nitroxide Radical PILs as Anode Materials for Li-ion Battery 氮氧自由基改性石墨纳米板作为锂离子电池负极材料
2019 7th International Renewable and Sustainable Energy Conference (IRSEC) Pub Date : 2019-11-01 DOI: 10.1109/IRSEC48032.2019.9078322
M. Aqil, M. Dahbi, I. Saadoune, A. E. Idrissi, A. Aqil, C. Jérôme
{"title":"Functionalized Graphite Nanoplatelet by Nitroxide Radical PILs as Anode Materials for Li-ion Battery","authors":"M. Aqil, M. Dahbi, I. Saadoune, A. E. Idrissi, A. Aqil, C. Jérôme","doi":"10.1109/IRSEC48032.2019.9078322","DOIUrl":"https://doi.org/10.1109/IRSEC48032.2019.9078322","url":null,"abstract":"We report organic radical functionalized graphite nanoplatelet (GNP) via a simple click reaction of the polymer propagated radical, polyvinylimidazolium functionalized with redox-active free radical TEMPO pendants groups. The as-obtained monomer was successfully polymerized by free radical polymerization at low temperature (40 ° C) by using 2,2’ - azobis(4-methoxy-2.4-dimethyl valeronitrile) as initiator. Finally, the CNO bond of the alkoxyamine pendant groups was thermally cleaved releasing the redox-active TEMPO nitroxide radicals. This simple and efficient strategy to synthesize graphite-functionalized PILs will provide new opportunities to fabricate many other polymer composite electrodes for desired electrochemical performance.","PeriodicalId":6671,"journal":{"name":"2019 7th International Renewable and Sustainable Energy Conference (IRSEC)","volume":"68 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75189489","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
Complex On-Off Air-Conditioning Control Strategy for Peak Demand Reduction in Desert Climate Conditions 沙漠气候条件下减少高峰需求的复杂开关空调控制策略
2019 7th International Renewable and Sustainable Energy Conference (IRSEC) Pub Date : 2019-11-01 DOI: 10.1109/IRSEC48032.2019.9078186
Mohammed Al-Azba, Zhaohui Cen, S. Ahzi, Y. Rémond
{"title":"Complex On-Off Air-Conditioning Control Strategy for Peak Demand Reduction in Desert Climate Conditions","authors":"Mohammed Al-Azba, Zhaohui Cen, S. Ahzi, Y. Rémond","doi":"10.1109/IRSEC48032.2019.9078186","DOIUrl":"https://doi.org/10.1109/IRSEC48032.2019.9078186","url":null,"abstract":"In this study, a pragmatic engineering approach is proposed to assist in addressing the high-power consumption for cooling specifically, peak demand issues in countries with desert climate conditions. In this approach, an improved control scheme for cooling buildings is developed to minimize load peak demand by managing to space cooling demands in a more holistic organized manner rather than being randomly managed. In addition, a mathematical model of a typical house cooling system is developed along with a complex multi-mode logic controller. Finally, The simulation results demonstrate the ability of the proposed control scheme to considerably reduce power peaks while maintaining an adequate level of indoor comfort.","PeriodicalId":6671,"journal":{"name":"2019 7th International Renewable and Sustainable Energy Conference (IRSEC)","volume":"44 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75673144","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
On the Impact of Rooftop Solar PV on Local Temperatures in Urban Areas 城市屋顶太阳能光伏对当地气温的影响
2019 7th International Renewable and Sustainable Energy Conference (IRSEC) Pub Date : 2019-11-01 DOI: 10.1109/IRSEC48032.2019.9078199
Asmaa Zaz, M. Bakkali, M. Ouassaid, Y. Ashie, M. Ghogho
{"title":"On the Impact of Rooftop Solar PV on Local Temperatures in Urban Areas","authors":"Asmaa Zaz, M. Bakkali, M. Ouassaid, Y. Ashie, M. Ghogho","doi":"10.1109/IRSEC48032.2019.9078199","DOIUrl":"https://doi.org/10.1109/IRSEC48032.2019.9078199","url":null,"abstract":"Globally, the building sector accounts for around 36% of the final energy consumption and it produces 40% of CO2 emissions[1]. Similarly in Morocco, this sector is the largest energy consumer reaching a threshold of 33%, 26% for residential buildings and 7% for services (hotels, office buildings, schools, universities and hospitals). Thus, building consumption exceeds the industry sector (21%) and agriculture (8%) [2]. Such patterns are expected to increase quickly in the coming years. Integrating solar Photovoltaic (PV) panels in urban environments is an efficient solution to reduce electricity bills and CO2 emissions of buildings. This paper proposes a methodology to investigate the impact of large-scale deployment of solar PV on the urban micro-climate. This methodology consists of using the building footprints, building materials and meteorological conditions to calculate the urban surface temperatures before and after the integration of PV panels with the aim to assess any PV related Heat Islands (PVHI).","PeriodicalId":6671,"journal":{"name":"2019 7th International Renewable and Sustainable Energy Conference (IRSEC)","volume":"18 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72712134","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: 2
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