2022/07/03 更新

写真a

ベラン セルバン
BELLAN SELVAN
BELLAN SELVAN
所属
教育研究院 自然科学系 生産デザイン工学系列 准教授
工学部 工学力教育センター 准教授
職名
准教授
外部リンク

学位

  • Doctor of Philosophy (Ph.D) ( 2011年9月   VIT University, Vellore, India )

  • Master of Philosophy (M. Phil) ( 2006年12月   Bharathiar University, Coimbatore, India, )

  • Master of Science (M. Sc) ( 2006年3月   Sri Pushpam College, Tanjore, India )

  • Bachelor of Science (B.Sc) ( 2004年3月   PSG college of Arts and science )

研究キーワード

  • Thermal energy storage systems

  • Solar thermochemical reactors

  • Solar thermochemical hydrogen production

  • Thermal Plasma Processing

  • Heat and mass transfer

  • Fluid mechanics: Computational fluid dynamics

  • Fluidized bed reactors

  • Solar Thermal Energy

研究分野

  • エネルギー / 地球資源工学、エネルギー学  / Solar thermal Energy; Thermal energy storage; Solar thermochemical hydrogen production

  • 自然科学一般 / 数理物理、物性基礎  / Fluid mechanics: Computational fluid dynamics; Heat & Mass Transfer;

  • ものづくり技術(機械・電気電子・化学工学) / 熱工学  / Fluid Engineering; Heat and Mass Transfer

  • エネルギー / プラズマ応用科学  / Thermal plasmas

経歴(researchmap)

  • Niigata University, Japan   Faculty of Engineering   准教授

    2020年4月

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  • Niigata University, Japan   助教

    2016年3月

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  • CIC Energigune, Alava, Spain   Group of Thermal Energy Storage

    2015年11月

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  • IMDEA Energy, Madrid, Spain   Marie Curie Postdoctoral Researcher

    2012年3月

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  • Plasma Giken Ltd., Saitama, Japan   Research and Development   Scientist

    2011年2月

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  • Karunya University, India   Scientific Officer

    2009年12月

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  • BARC and VIT University, India   Junior Research Fellow

    2007年4月

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▶ 全件表示

経歴

  • 新潟大学   工学部 工学力教育センター   准教授

    2020年4月 - 現在

  • 新潟大学   研究推進機構 超域学術院   助教

    2016年3月 - 2020年3月

学歴

  • VIT University, India   Ph.D

    2007年 - 2011年

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  • Bharathiar University, India   M.Phil

    2005年 - 2006年

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  • Sri Pushpam College, Bharathidasan University, India   M.Sc

    2003年 - 2005年

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  • P.S.G. College of Arts and Science, Bharathiar University, India   B.Sc

    2000年 - 2003年

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所属学協会

  • International Solar Energy Society (ISES)

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  • Concentrating Solar Thermal Energy Society of Japan

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  • Life Member in Plasma Science Society of India (PSSI)

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論文

  • Fluidization behavior of redox metal oxide and spinel particles to develop high-energy-density thermal energy storage system for concentrated solar power applications

    Genta TSURUMAKI, Selvan BELLAN, Koji MATSUBARA, Tatsuya KODAMA, Mitsuho NAKAKURA, Nobuyuki GOKON, Hyun SEOK CHO, Karthik MANI, Sakthivel SHANMUGASUNDARAM

    Journal of Thermal Science and Technology   17 ( 2 )   22 - 00061   2022年

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    掲載種別:研究論文(学術雑誌)   出版者・発行元:Japan Society of Mechanical Engineers  

    DOI: 10.1299/jtst.22-00061

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  • Conjugate radiation-convection-conduction simulation of cubic lattice solar receiver with high porosity for high-temperature heat absorption

    Hikaru MARUYAMA, Akihiro OCHIAI, Mitsuho NAKAKURA, Selvan BELLAN, Hyun SEOK CHO, Koji MATSUBARA

    Journal of Thermal Science and Technology   17 ( 2 )   22 - 00057   2022年

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    掲載種別:研究論文(学術雑誌)   出版者・発行元:Japan Society of Mechanical Engineers  

    DOI: 10.1299/jtst.22-00057

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  • Thermochemical H<inf>2</inf>O splitting using LaSrMnCrO<inf>3</inf> of perovskite oxides for solar hydrogen production

    Nobuyuki Gokon, Kazuki Hara, Naoki Ito, Hiroki Sawaguri, Selvan Bellan, Tatsuya Kodama, Hyun Seok Cho

    AIP Conference Proceedings   2303   2020年12月

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    掲載種別:研究論文(国際会議プロシーディングス)  

    A thermochemical two-step water-splitting cycle using perovskite oxide of La0.7Sr0.3Mn0.9Cr0.1O3 was examined for hydrogen production from water using concentrated solar radiation. The impact of the thermal reduction temperatures of 1000–1350 °C on oxygen/hydrogen productivity and repeatability was examined for hydrogen production at a water decomposition temperature of 1200 °C. The sample displayed relatively high evolution rates of oxygen at TR temperatures of 1350-1300°C, and showed similar rate at TR temperatures of 1000-1200 °C. After the sample was subjected to the TR step at temperatures of 1350-1300 °C, the obtained samples were superior hydrogen production rate to the others. On the other hand, the sample provided relatively good reactivities and repeatabilities for oxygen release and hydrogen production with a small production level without coagulation or sintering during the TR temperatures of 1000-1200 °C.

    DOI: 10.1063/5.0028720

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  • Thermochemical two-step CO<inf>2</inf> splitting using La<inf>0.7</inf>Sr<inf>0.3</inf>Mn<inf>0.9</inf>Cr<inf>0.1</inf>O<inf>3</inf> of perovskite oxide for solar fuel production

    Hiroki Sawaguri, Nobuyuki Gokon, Naoki Ito, Selvan Bellan, Tatsuya Kodama, Hyun Seok Cho

    AIP Conference Proceedings   2303   2020年12月

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    掲載種別:研究論文(国際会議プロシーディングス)  

    A thermochemical two-step water-splitting cycle using perovskite oxide of La0.7Sr0.3Mn0.9Cr0.1O3 was examined for carbon monoxide production from CO2 using concentrated solar radiation. Previously, the authors proved the perovskite oxide can thermochmically split H2O via two-step process into oxygen and hydrogen in an individual step. In this study, a thermochemical two-step CO2 splitting cycle using the perovskite oxide was examined for the reactivity and repeatability of redox reaction at CO2 spitting temperatures of 1000-1200 °C. The reactivity and repeatability for two-step CO2 splitting was compared to those for H2O splitting operating at the same temperature level.

    DOI: 10.1063/5.0028681

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  • Numerical analysis on solidification process of PCM in triplex-tube thermal energy storage system

    Koya Hirai, Selvan Bellan, Koji Matsubara, Tatsuya Kodama, Nobuyuki Gokon, Hyun Seok Cho

    AIP Conference Proceedings   2303   2020年12月

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    掲載種別:研究論文(国際会議プロシーディングス)  

    Considerable attention is being paid in recent years to develop and improve alternative technologies to replace fossil fuels due to pollution problems and limited conventional energy sources. Solar thermal energy has been considering as one of the most attractive renewable sources to provide solution to the aforementioned problems. In recent years, latent thermal energy storage systems using phase change materials (PCMs) have been developed to aid energy supply and demand of solar thermal power plants. As one of the obstacles of these systems is the low thermal conductivity of PCMs, ceramic fin has been used in this study to enhance heat transfer rate between the PCM and heat transfer fluid. To assess the heat transfer characteristics of the triplex-tube thermal energy storage system with ceramic fin, a numerical model has been developed and the effect of fin for various Stefan numbers has been studied numerically. The heat transfer and solidification rates are significantly enhanced when connecting the fins between the inner and outer tubes.

    DOI: 10.1063/5.0028873

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  • Chemical compatibility of Cu-Ge alloy with container materials for latent heat storage system

    Nobuyuki Gokon, Chew Shun Jie, Selvan Bellan, Tatsuya Kodama, Tsuyoshi Hatamachi, Hyunseok Cho

    AIP Conference Proceedings   2303   2020年12月

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    掲載種別:研究論文(国際会議プロシーディングス)  

    Latent heat storage technology in CSP plant has been studied to enhance the dispatchability of solar energy in order to meet fluctuating electricity needs. A novel concept using metal alloys as latent heat storage material gives way to achieve this technology. In this paper, we analyzed the structural and thermal properties of Cu-Ge alloy to evaluate the potential of metallic PCM for high temperature TES application. Containment options for metallic PCM were explored and the materials are selected for long term operation. Compatibility tests of stainless steel, alumina and SiC ceramics under inert atmosphere were performed at high temperatures (800°C) for a duration of 1 month (720 h) in order to develop a suitable container material for thermal energy storage system.

    DOI: 10.1063/5.0028722

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  • Experimental Study of Mn-CeO<inf>2</inf> Coated Ceramic Foam Device for Two-step Water Splitting Cycle Hydrogen Production with 3kW Sun-simulator

    Hyun Seok Cho, Tatsuya Kodama, Nobuyuki Gokon, Selvan Bellan, Naoyoshi Nishigata

    AIP Conference Proceedings   2303   2020年12月

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    掲載種別:研究論文(国際会議プロシーディングス)  

    In this paper, the effect of doping of Manganese on to Cerium oxide for thermochemical two-step water splitting cycle for produce the hydrogen was experimentally studied. In order to compare the oxygen/hydrogen productivity, pure CeO2, coprecipitation method applied Mn-CeO2, and direct doping calcination method adopted Mn-CeO2 were used to thermo-chemical two-step water splitting cycle tests. The synthesized sample powders were coated on the reticulated porous foam device and tested in the fixed bed type reactor for the temperature of 1400 C for thermal reduction step, and 1200 C for water decomposition step through 5 cyclic tests. The redox reactive foam devices were irradiated by 3kW sun-simulator, and all samples recorded successful oxygen/hydrogen production. Among the 3 sample devices, the 15 mol% Mn-CeO2 foam device which synthesized by direct doping calcination method shows highest hydrogen production amount and H2/O2 conversion ratio. o o

    DOI: 10.1063/5.0029890

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  • Thermal charge/discharge performance of iron–germanium alloys as phase change materials for solar latent heat storage at high temperatures

    Nobuyuki Gokon, Chew Shun Jie, Yuya Nakano, Tatsuya Kodama, Selvan Bellan, Hyunseok Cho

    Journal of Energy Storage   30   2020年8月

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    掲載種別:研究論文(学術雑誌)  

    In this study, an iron–germanium alloy (Fe–Ge alloy) was examined as a phase change material at temperatures exceeding 800°C for thermal energy storage in solar thermal applications. The cyclic properties of the thermal charge/discharge of the Fe–Ge alloy were examined at various thermal cycles. A thermal reliability test was performed in the form of a multi-cyclic performance assessment to evaluate the short- and long-term thermal stability of this alloy. Eutectic and hypereutectic chemical compositions of the Fe–Ge alloy were placed in a graphite container under vacuum and an inert atmosphere. The Fe–Ge alloy was experimentally examined for its compatibility with the container material of graphite-carbon. The element distribution of each Fe–Ge alloy was examined via a cyclic performance test. The heat storage capacities were evaluated and compared with those of chloride molten salts. The Fe–Ge alloy exhibits significant potential as a latent heat storage material in next-generation solar thermal applications as it demonstrates various advantages, namely: a higher storage capacity than that of chloride molten salts, temperature followability to the phase diagram, a quick thermal response, satisfactory cyclic behavior of charge/discharge modes, a thermodynamically stable metallographic structure, and non-reactivity with capsulation materials of graphite carbon.

    DOI: 10.1016/j.est.2020.101420

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  • Direct simulation of a volumetric solar receiver with different cell sizes at high outlet temperatures 査読

    セルバン ベラン

    Renewable Energy   146   1143 - 1152   2020年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

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  • Heat transfer and particulate flow analysis of a 30 kW directly irradiated solar fluidized bed reactor for thermochemical cycling 査読

    セルバン ベラン

    Chemical Engineering Science   203   511 - 525   2019年8月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1016/j.ces.2018.09.012

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  • Thermal performance of a 30 kW fluidized bed reactor for solar gasification: A CFD-DEM study 査読

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    Chemical Engineering Journal   360   1287 - 1300   2019年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1016/j.cej.2018.10.111

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  • Development of a 5kWth internally circulating fluidized bed reactor containing quartz sand for continuously-fed coal-coke gasification and a beam-down solar concentrating system 査読

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    Energy   166   1 - 16   2019年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1016/j.energy.2018.10.036

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  • Thermochemical behavior of perovskite oxides based on LaxSr1-x(Mn, Fe, Co)O3-δ and BaySr1-yCoO3-δ redox system for thermochemical energy storage at high temperatures 査読

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    Energy   171   971 - 980   2019年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1016/j.energy.2019.01.081

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  • Thermochemical two-step water splitting cycle using perovskite oxides based on LaSrMnO3 redox system for solar H2 production 査読

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    Thermochimica Acta   680 ( 178374 )   2019年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1016/j.tca.2019.178374

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  • Efficiency and heat loss analysis of honeycomb receiver varying air mass flow rate and beam width 査読

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    International Journal of Heat and Mass Transfer   137   1027 - 1040   2019年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

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  • Loop Thermosiphon Thermal Collector for Waste Heat Recovery Power Generation 査読

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    Experimental Heat Transfer   https://doi.org/10.1080/089161   2019年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

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  • Particles Fluidized Bed Receiver/Reactor with a Beam-Down Solar Concentrating Optics: First Performance Test on Two-Step Water Splitting with Ceria Using a Miyazaki Solar Concentrating System 査読

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    AIP Conference Proceedings   2126 ( 180011 )   2019年

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    記述言語:英語   掲載種別:研究論文(国際会議プロシーディングス)  

    DOI: 10.1063/1.5117691

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  • Fe-Doped Manganese Oxide Redox Material for Thermochemical Energy Storage at High-Temperatures 査読

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    AIP Conference Proceedings   2126 ( 210003 )   2019年

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    記述言語:英語   掲載種別:研究論文(国際会議プロシーディングス)  

    DOI: 10.1063/1.5117752

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  • Heat Transfer and Fluid Flow Analysis of A Fluidized Bed Reactor for Beam-Down Optics 査読

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    AIP Conference Proceedings   2126 ( 180004 )   2019年

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    記述言語:英語   掲載種別:研究論文(国際会議プロシーディングス)  

    DOI: 10.1063/1.5117684

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  • A CFD-DEM study of hydrodynamics with heat transfer in a gas-solid fluidized bed reactor for solar thermal applications 査読

    Selvan Bellan, Koji Matsubara, Hyun Seok Cho, Nobuyuki Gokon, Tatsuya Kodama

    INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER   116   377 - 392   2018年1月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:PERGAMON-ELSEVIER SCIENCE LTD  

    The particles flow and heat transfer characteristics of a high temperature solar thermochemical fluidized bed reactor have been studied for solar beam-down concentrating systems. A numerical model has been developed by the combined approach of computational fluid dynamics (CFD) and discrete element method (DEM) collisional model since it is an effective approach for studying the gas-solid flow. The discrete ordinate model has been used to solve the radiation heat transfer. An experimental visualization of particles circulation pattern and mixing of two-tower fluidized bed system has been presented. A good agreement has been found between the experimental measurements and numerical predictions. The effect of gas superficial velocity, bed mass and inlet gas temperature on the flow pattern and temperature characteristics of the bed have been investigated. The results showed that the maximum and average temperature of the bed, depends on the top layer position and focal point of the concentrated radiation, decreased when increasing the total mass of the bed. (C) 2017 Elsevier Ltd. All rights reserved.

    DOI: 10.1016/j.ijheatmasstransfer.2017.09.015

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  • Reactivity of Mn-Doped Ceria for a Thermochemical Two-Step Water-splitting cycle at low temperature 査読

    Enzo Shida, Kiko Naito, Tsuyoshi Hatamachi, Selvan Bellan, Cho Hyun-Seok, Nobuyuki Gokon, Tatsuya Kodama

    The 6th International Symposium on Fusion Technology, Niigata University, Niigata, Japan, January 26-28, 2018.   2018年

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    記述言語:英語   掲載種別:研究論文(国際会議プロシーディングス)  

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  • Numerical and experimental study on granular flow and heat transfer characteristics of directly-irradiated fluidized bed reactor for solar gasification. 査読

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    International Journal of Hydrogen Energy   43 ( 34 )   16443 - 16457   2018年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1016/j.ijhydene.2018.06.033

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  • CFD-DEM investigation on flow and temperature distribution of ceria particles in a beam-down fluidized bed reactor 査読

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    AIP Conference Proceedings   2033 ( 130003 )   2018年

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    記述言語:英語   掲載種別:研究論文(国際会議プロシーディングス)  

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  • Conjugate radiation-convection-conduction simulation of volumetric solar receivers with cut-back inlets 査読

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    Solar Energy   170   606 - 617   2018年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

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  • Heat transfer analysis of 5kWth circulating fluidized bed reactor for solar gasification using concentrated Xe light radiation 査読

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    Energy   160   245 - 256   2018年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1016/j.energy.2018.06.212

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  • Particle fluidized bed receiver/reactor with a beam-down solar concentrating optics: Performance test of two-step water splitting with ceria particles using 30-kWth sun-simulator 査読

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    AIP Conference Proceedings   2033 ( 130009 )   2018年

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    記述言語:英語   掲載種別:研究論文(国際会議プロシーディングス)  

    DOI: 10.1063/1.5067143

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  • Preliminary tests of batch type fluidized bed reactor for development of continuously-feeding fluidized bed reactor-An elevated temperature and gasification processes 査読

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    AIP Conference Proceedings   2033 ( 130006 )   2018年

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    記述言語:英語   掲載種別:研究論文(国際会議プロシーディングス)  

    DOI: 10.1063/1.5067140

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  • Research on thermal charge / discharge cyclic performance of new thermal storage materials for solar thermal power generation 査読

    Asato Shirai, Mami Kaneko, Selvan Bellan, Hyun Seok Cho, Tsuyoshi Hatamachi, Nobuyuki Gokon, Tatsuya Kodama

    The 6th International Symposium on Fusion Technology, Niigata University, Niigata, Japan, January 26-28, 2018.   2018年

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    記述言語:英語   掲載種別:研究論文(国際会議プロシーディングス)  

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  • Fe-doped Mn2O3/Mn3O4 redox material for thermochemical energy storage at high-temperatures 査読

    Nobuyuki Gokon, Aoi Nishizawa, Takehiro Yawata, Hyun-seok Cho, Selvan Bellan, Tatsuya Kodama

    SolarPACES 2018, Casabranca, Morocco, October 2-5, 2018   2018年

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    記述言語:英語   掲載種別:研究論文(国際会議プロシーディングス)  

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  • Buoyancy-opposed volumetric solar receiver with beam-down optics irradiation 査読

    Mitsuho Nakakura, Koji Matsubara, Hyun-Seok Cho, Tatsuya Kodama, Nobuyuki Gokon, Selvan Bellan, Kazuo Yoshida

    Energy   141   2337 - 2350   2017年12月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Elsevier Ltd  

    This paper describes a volumetric solar receiver that is vertically integrated with beam-down optics for condensed light irradiation. The heat-transfer performance of a silicon carbide honeycomb receiver was investigated using a 30-kWth solar simulator and numerical simulation. The experiments achieved an air temperature of 840 K at the receiver outlet by varying the operational parameters. Numerical simulations were performed for a vertical honeycomb block with beam-down irradiation and a horizontal honeycomb block with tower-type irradiation to elucidate the effects of buoyancy. Three blocks with different sizes were simulated for a variety of operational parameters. When the block was oriented vertically, the flow and temperature fields remained nearly symmetric in and near the receiver. In contrast, when it was oriented horizontally, the flow and temperature became asymmetric, with the hot spot moving toward the receiver's side wall and the stream in the receiver being reversed. The vertical orientation's robustness to buoyancy effects prevented any reduction in the receiver efficiency or outlet temperature and suppressed the thermal leakage.

    DOI: 10.1016/j.energy.2017.11.147

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  • Particle reactors for solar thermochemical processes 査読

    Tatsuya Kodama, Selvan Bellan, Nobuyuki Gokon, Hyun Seok Cho

    SOLAR ENERGY   156   113 - 132   2017年11月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:PERGAMON-ELSEVIER SCIENCE LTD  

    Utilization of solar thermal power for high temperature fuel production has the potential to significantly reduce the fossil fuel dependence of our current economy. Over the past two decades, remarkable progress has been made in the development of solar driven thermochemical reactors for the production of hydrogen and syngas as they are promising energy carriers for transportation, domestic and industrial applications. However, there are solar peculiarities in comparison to conventional thermochemical processes high thermal flux density and frequent thermal transients because of the fluctuating insolation-, and conventional industrial thermochemical reactors are generally not suitable for solar driven reactors. Therefore, solar-specific modifications of reactor design are necessary to realize efficient solar driven thermochemical processes. In solar thermochemical reactors, the methods for solar-heating particulate solid feedstock to high temperatures can be broadly classified as solar "directly" and "indirectly" absorbing reactors. On solar thermochemical processes involving reacting solid particles at high temperatures, such as "solar two-step water splitting with metal oxides" and "solar gasification", various types of solar directly and indirectly absorbing particle reactors have been developed. In this review, recent development of solar particle reactors for the above solar thermochemical processes is described. (C) 2017 Elsevier Ltd. All rights reserved.

    DOI: 10.1016/j.solener.2017.05.084

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  • CFD-DEM investigation of particles circulation pattern of two-tower fluidized bed reactor for beam-down solar concentrating system 査読

    Selvan Bellan, Koji Matsubara, Cho Hyun Cheok, Nobuyuki Gokon, Tatsuya Kodama

    POWDER TECHNOLOGY   319   228 - 237   2017年9月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:ELSEVIER SCIENCE BV  

    In this study, a numerical model has been developed by the combined approach of computational fluid dynamics (CFD) and discrete element method (DEM) collisional model to study the particle-fluid flow of the fluidized bed reactor for solar beam-down concentrating system. The contact forces between the particles have been calculated by the spring-dashpot model, based on the soft-sphere method. An experimental visualization of particles circulation pattern and mixing of two-tower fluidized bed system has been presented. A good agreement has been found between the experimental measurements and numerical predictions. To investigate the influence of fluid flow rate and particle size on the flow pattern of the reactor, simulations have been performed for various conditions. The results indicate that the large size particles induce three-dimensional effects as they are accumulated at the central axis region. The average bed height of the left tower increased by 23.4% when increasing the flow rate about 70%. (C) 2017 Elsevier B.V. All rights reserved.

    DOI: 10.1016/j.powtec.2017.06.060

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  • Discrete ordinates simulation of volumetric solar receiver with beam-down irradiation and its verification using big sun simulator 査読

    Mitsuho Nakakura, Koji Matsubara, Yuki Aoki, Selvan Bellan, Cho Hyun-Seok, Nobuyuki Gokon, Tatsuya Kodama

    SOLARIS Conference 27 - 28 Jul 2017, London, UK   2017年

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  • Investigation of reaction temperature of cerium oxide in two-step carbon dioxide splitting cycles 査読

    Kazuya Senuma, Nobuyuki Gokon, Hyun-Seok Cho, Selvan Bellan, Tsuyoshi Hatamachi, Tatsuya Kodama

    Asian Conference on thermal sciences 2017, ICC JEJU, JEJU ISLAND, KOREA, March 26-30, 2017.   2017年

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    記述言語:英語   掲載種別:研究論文(国際会議プロシーディングス)  

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  • HEAT TRANSFER ANALYSIS OF AN OVAL CERAMIC CONTAINER ENCAPSULATED BY PHASE CHANGE MATERIAL FOR THERMAL ENERGY STORAGE SYSTEM 査読

    Selvan Bellan, Shunichi Tazawa, Tomohiro Nakamata, Cho Hyun Cheok, Nobuyuki Gokon, Koji Matsubara, Tatsuya Kodama

    Asian Conference on thermal sciences 2017, ICC JEJU, JEJU ISLAND, KOREA, March 26-30, 2017.   2017年

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    記述言語:英語   掲載種別:研究論文(国際会議プロシーディングス)  

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  • Melting process of PCM in ceramic capsule for solar thermal storage 査読

    Selvan Bellan, Shunichi Tazawa, Koji Matsubara, Cho Hyun Seok, Nobuyuki Gokon, Tatsuya Kodama

    SOLARIS Conference 27 - 28 Jul 2017, London, UK.   2017年

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  • Heat Transfer Analysis of Fluidized Bed Particle Receiver for High-Temperature Solar Concentration 査読

    Koji Matsubara, Atsushi Sakurai, Takahiro Suzuki, Selvan Bellan, Nobuyuki Gokon, Cho Hyun-Seok, Tatsuya Kodama

    SOLARIS Conference 27 - 28 Jul 2017, London, UK   2017年

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    記述言語:英語   掲載種別:研究論文(国際会議プロシーディングス)  

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  • THERMOCHEMICAL TWO-STEP WATER-SPLITTING USING PEROVSKITE OXIDE FOR SOLAR HYDROGEN PRODUCTION 査読

    Yuta Sugiyama, Nobuyuki Gokon, Hyun-Seok Cho, Selvan Bellan, Tsuyoshi Hatamachi, Tatsuya Kodama

    Asian Conference on thermal sciences 2017, ICC JEJU, JEJU ISLAND, KOREA, March 26-30, 2017.   2017年

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    記述言語:英語   掲載種別:研究論文(国際会議プロシーディングス)  

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  • HYDROGEN PRODUCTIVITY AND REPEATABILITY FOR THERMOCHEMICAL TWO-STEP WATER-SPLITTING CYCLE USING MN-DOPED CERIUM OXIDES 査読

    Kiko Naito, Nobuyuki Gokon, Hyun-Seok Cho, Selvan Bellan, Tsuyoshi Hatamachi, Tatsuya Kodama

    Asian Conference on thermal sciences 2017, ICC JEJU, JEJU ISLAND, KOREA, March 26-30, 2017.   2017年

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    記述言語:英語   掲載種別:研究論文(国際会議プロシーディングス)  

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  • SOLAR RECEIVER/REACTOR OF FLUIDIZED BED WITH MIYAZAKI BEAM-DOWN SOLAR CONCENTRATING SYSTEM 査読

    Kazuya Senuma, Nobuyuki Gokon, Hyun-Seok Cho, Selvan Bellan, Tsuyoshi Hatamachi, Tatsuya Kodama

    Asian Conference on thermal sciences 2017, ICC JEJU, JEJU ISLAND, KOREA, March 26-30, 2017.   2017年

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    記述言語:英語   掲載種別:研究論文(国際会議プロシーディングス)  

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  • Thermal Storage/Discharge Performances of Cu-Si Alloy for Solar Thermochemical Process 査読

    Nobuyuki Gokon, Tomoya Yamaguchi, Hyun-seok Cho, Selvan Bellan, Tsuyoshi Hatamachi, Tatsuya Kodama

    INTERNATIONAL CONFERENCE ON CONCENTRATING SOLAR POWER AND CHEMICAL ENERGY SYSTEMS (SOLARPACES 2016)   1850 ( 100008 )   2017年

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    記述言語:英語   掲載種別:研究論文(国際会議プロシーディングス)   出版者・発行元:AMER INST PHYSICS  

    The present authors (Niigata University, Japan) have developed a tubular reactor system using novel "double-walled" reactor/receiver tubes with carbonate molten-salt thermal storage as a phase change material (PCM) for solar reforming of natural gas and with Al-Si alloy thermal storage as a PCM for solar air receiver to produce high-temperature air. For both of the cases, the high heat capacity and large latent heat (heat of solidification) of the PCM phase circumvents the rapid temperature change of the reactor/receiver tubes at high temperatures under variable and uncontinuous characteristics of solar radiation. In this study, we examined cyclic properties of thermal storage/discharge for Cu-Si alloy in air stream in order to evaluate a potentiality of Cu-Si alloy as a PCM thermal storage material. Temperature-increasing performances of Cu-Si alloy are measured during thermal storage (or heat-charge) mode and during cooling (or heat-discharge) mode. A oxidation state of the Cu-Si alloy after the cyclic reaction was evaluated by using electron probe micro analyzer (EPMA).

    DOI: 10.1063/1.4984465

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  • Numerical Analysis of Fluid Flow and Heat Transfer During Melting Inside a Cylindrical Container for Thermal Energy Storage System 査読

    Selvan Bellan, Cho Hyun Cheok, Nobuyuki Gokon, Koji Matsubara, Tatsuya Kodama

    INTERNATIONAL CONFERENCE ON CONCENTRATING SOLAR POWER AND CHEMICAL ENERGY SYSTEMS (SOLARPACES 2016)   1850 ( 080006 )   2017年

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    記述言語:英語   掲載種別:研究論文(国際会議プロシーディングス)   出版者・発行元:AMER INST PHYSICS  

    This paper presents a numerical analysis of unconstrained melting of high temperature(&gt;1000K) phase change material (PCM) inside a cylindrical container. Sodium chloride and Silicon carbide have been used as phase change material and shell of the capsule respectively. The control volume discretization approach has been used to solve the conservation equations of mass, momentum and energy. The enthalpy-porosity method has been used to track the solidliquid interface of the PCM during melting process. Transient numerical simulations have been performed in order to study the influence of radius of the capsule and the Stefan number on the heat transfer rate. The simulation results show that the counter-clockwise Buoyancy driven convection over the top part of the solid PCM enhances the melting rate quite faster than the bottom part.

    DOI: 10.1063/1.4984427

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  • Numerical analysis of latent heat storage system with encapsulated phase change material in spherical capsules 査読

    セルバン ベラン

    Renew. Energy Environ. Sustain.   DOI: 10.1051/rees/2016007   2017年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

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  • NUMERICAL SIMULATION OF VOLUMETRIC AIR RECEIVER FOR BEAM DOWN REFLECTOR 査読

    M. Nakakura, K. Matsubara, S. Kawagoe, S. Bellan, H. S. Cho, N. Gokon, T. Kodama

    Asian Conference on thermal sciences 2017, ICC JEJU, JEJU ISLAND, KOREA, March 26-30, 2017.   2017年

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    記述言語:英語   掲載種別:研究論文(国際会議プロシーディングス)  

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  • Particles Fluidized Bed Receiver/Reactor with a Beam-Down Solar Concentrating Optics: 30-kWth Performance Test on Two-Step Water Splitting with Ceria Particles Uing a Big Sun-Simulator 査読

    Tatsuya Kodama, Nobuyuki Gokon, Hyun Ceok Cho, Selvan Bellan, Koji Matsubara, Kazuya Senuma, Kousuke Inoue

    SolarPACES 2017, Santiago, Chili, September 26-29, 2017   1734   2016年

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    記述言語:英語   掲載種別:研究論文(国際会議プロシーディングス)  

    DOI: 10.1063/1.4949206

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  • Numerical Modelling of a 100-Wh Lab-Scale Thermochemical Heat Storage System for Concentrating Solar Power Plants 査読

    Sandra Alvarez de Miguel, Selvan Bellan, J. M. Garcia de Maria, Jose Gonzalez-Aguilar, Manuel Romero

    SOLARPACES 2015: INTERNATIONAL CONFERENCE ON CONCENTRATING SOLAR POWER AND CHEMICAL ENERGY SYSTEMS   1734   2016年

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    記述言語:英語   掲載種別:研究論文(国際会議プロシーディングス)   出版者・発行元:AMER INST PHYSICS  

    Dispatchable electricity generation on demand is a fundamental issue for commercial deployment of Concentrated Solar Power (CSP) plants. One of the promising routes to overcome the intermittence of the solar resource is the use of thermochemical energy storage systems based on redox reactions of metal oxides. Different metal oxides might potential candidates as storing material depending on the foreseen working temperature range. In the framework of the FP7 European project TCSPower, a particle-based reactor is used to analyze this type of materials. The lab-scale thermochemical reactor is initially tested using an inert material (alumina particles) instead of reactants in order to study its thermal performance. Thermocouples installed inside the system at various positions monitor the experiments. A three dimensional numerical model is developed to investigate the flow and heat transfer in the reactor. The governing equations - mass, momentum and energy conservation - are solved by the finite element method in the commercial software COMSOL Multiphysics. Simulations are performed for the experimental conditions. Experimentally measured and numerically predicted temperature profiles at various locations inside the system are compared and presented in this paper.

    DOI: 10.1063/1.4949103

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  • Numerical and experimental studies on heat transfer characteristics of thermal energy storage system packed with molten salt PCM capsules 査読

    Selvan Bellan, Tanvir E. Alam, Jose Gonzalez-Aguilar, Manuel Romero, Muhammad M. Rahman, D. Yogi Goswami, Elias K. Stefanakos

    APPLIED THERMAL ENGINEERING   90   970 - 979   2015年11月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:PERGAMON-ELSEVIER SCIENCE LTD  

    In order to avoid intermittent energy supply problems, thermal energy storage system plays an important role in concentrated solar power plants. Thus, a significant focus has been given on the improvement of thermal energy storage systems from the past few decades. In this paper, the dynamic thermal performance of high temperature latent thermal energy storage system packed with spherical capsules is analyzed experimentally and numerically. The spherical capsules are encapsulated by sodium nitrate and air is used as heat transfer fluid. Transient two-dimensional continuous solid phase and effective packed bed models are developed and validated by comparing to the experimental results. Using these models, detailed characteristics of the heat transfer between the capsules and heat transfer fluid are analyzed. Parametric analyses are conducted to study the influence of mass flow rate, Stefan number, thickness and the thermal conductivity of the shell. The results indicate that the Stefan number plays a vital role on the total heat storage capacity due to sensible heat, and the shell properties of the capsule significantly influence the thermal performance of the system; the influence of the shell thickness increases (decreases) when the thermal conductivity of the shell is low (high). (C) 2015 Elsevier Ltd. All rights reserved.

    DOI: 10.1016/j.applthermaleng.2015.07.056

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  • Numerical investigation of PCM-based thermal energy storage system 査読

    Selvan Bellan, Jose Gonzalez-Aguilar, Manuel Romero, Muhammad M. Rahman, D. Yogi Goswami, Elias K. Stefanakos

    INTERNATIONAL CONFERENCE ON CONCENTRATING SOLAR POWER AND CHEMICAL ENERGY SYSTEMS, SOLARPACES 2014   69   758 - 768   2015年

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    記述言語:英語   掲載種別:研究論文(国際会議プロシーディングス)   出版者・発行元:ELSEVIER SCIENCE BV  

    A latent thermal energy storage system, which consists of sodium nitrate filled spherical capsules in a cylindrical tank, is analyzed for concentrating solar power plant applications. The high temperature synthetic oil, Therminol 66, is used as heat transfer fluid. A numerical model is developed to investigate the behavior of the system. The developed model is validated using the reported experimental and numerical data. The influence of capsule size and the flow rate of heat transfer fluid (HTF) on the temperature distribution, fluid flow, melting and solidification of the system is studied. The natural convection effect present in the liquid region during melting is resolved by the effective thermal conductivity, which is calculated by enthalpy formulation method. The results indicated that the heat transfer rate is increased and eventually the charging/discharging time is decreased when the capsule size is decreased, or the HTF flow rate is increased. (C) 2015 The Authors. Published by Elsevier Ltd.

    DOI: 10.1016/j.egypro.2015.03.086

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  • Numerical analysis of charging and discharging performance of a thermal energy storage system with encapsulated phase change material 査読

    Selvan Bellan, Jose Gonzalez-Aguilar, Manuel Romero, Muhammad M. Rahman, D. Yogi Goswami, Elias K. Stefanakos, David Couling

    APPLIED THERMAL ENGINEERING   71 ( 1 )   481 - 500   2014年10月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:PERGAMON-ELSEVIER SCIENCE LTD  

    The objective of this paper is to develop a two dimensional two-phase model to study the dynamic behavior of a packed bed thermal energy storage system, which is composed of spherical capsules of encapsulated phase change material (PCM-sodium nitrate) and high temperature synthetic oil (Therminol 66) as heat transfer fluid. The heat transfer coefficient is calculated based on the phase change process inside the capsule by enthalpy formulation model and the flow inside the system is predicted by solving the extended Brinkman equation. After model validation, the developed model is used to investigate the influence of capsule size, fluid temperature (Stefan number), tank size (length and diameter), fluid flow rate and the insulation layer thickness of tank wall on the performance of the system. The dynamic behavior of the system, subjected to partial charging and discharging cycles, is also analyzed. It is found that increasing the capsule size, fluid flow rate, or decreasing the Stefan number, results in an increase in the thermocline region which finally decreases the effective discharge time and the total utilization. (C) 2014 Elsevier Ltd. All rights reserved.

    DOI: 10.1016/j.applthermaleng.2014.07.009

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  • NUMERICAL STUDY OF A BEAM-DOWN SOLAR THERMOCHEMICAL REACTOR FOR CHEMICAL KINETICS ANALYSIS 査読

    Selvan Bellan, Cristina Cerpa Suarez, Jose Gonzalez-Aguilar, Manuel Romero

    PROCEEDINGS OF THE ASME 8TH INTERNATIONAL CONFERENCE ON ENERGY SUSTAINABILITY, 2014, VOL 1   2014年

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    記述言語:英語   掲載種別:研究論文(国際会議プロシーディングス)   出版者・発行元:AMER SOC MECHANICAL ENGINEERS  

    A lab-scale solar thermochemical reactor is designed and fabricated to study the thermal reduction of non-volatile metal oxides, which operates simultaneously as solar collector and as chemical reactor. The main purpose of this reactor is to achieve the first step in two-step thermochemical cycles. The chemical conversion rate strongly depends on the temperature and fluid flow distribution around the reactant, which are determined by the reactor geometry. The optimal design depends on the constraints of the problem and on the operating parameters. Hence, the objective of this investigation is to analyze the heat and mass transfer in the vertically-oriented chemical reactor by a CFD model and to optimize the reactor design. The developed numerical model is validated by comparing the simulation results with reported model. The influence of different technical and operating parameters on the temperature distribution and the fluid flow of the reactor are studied.

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  • NUMERICAL MODELING OF THERMAL ENERGY STORAGE SYSTEM 査読

    Selvan Bellan, Jose Gonzalez-Aguilar, Manuel Romero, Muhammad M. Rahman, D. Yogi Goswami, Elias K. Stefanakos

    PROCEEDINGS OF THE ASME 8TH INTERNATIONAL CONFERENCE ON ENERGY SUSTAINABILITY, 2014, VOL 2   2014年

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    記述言語:英語   掲載種別:研究論文(国際会議プロシーディングス)   出版者・発行元:AMER SOC MECHANICAL ENGINEERS  

    Thermal energy storage in the form of latent heat of fusion of phase change material gained considerable attention in solar energy applications since it significantly increases the energy density and reduces the storage tank size compared to the sensible heat storage system. Several numerical and experimental studies have been conducted to enhance the performance of the system. In this study, 2-D continuous solid phase and effective packed bed models are developed to study the behavior and performance of a thermal energy storage system for high temperature applications, which is composed of spherical capsules encapsulated by phase change material (Sodium nitrate) and high temperature synthetic oil (Therminol 66) as heat transfer fluid. Temperature distribution, fluid flow, melting, solidification and thermocline behavior of the system are predicted and the influence of capsule size on the performance of the system is studied.

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  • Numerical modeling of solar thermochemical reactor for kinetic analysis 査読

    Selvan Bellan, Elisa Alonso, Carlos Perez-Rabago, Jose Gonzalez-Aguilar, Manuel Romero

    PROCEEDINGS OF THE SOLARPACES 2013 INTERNATIONAL CONFERENCE   49   735 - 742   2014年

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    記述言語:英語   掲載種別:研究論文(国際会議プロシーディングス)   出版者・発行元:ELSEVIER SCIENCE BV  

    A lab-scale thermochemical reactor is designed and fabricated for the solar-driven thermal reduction of non-volatile manganese oxide to produce hydrogen by water splitting thermo chemical cycles. A time dependent three dimensional numerical model is developed to investigate the performance of the reactor since the chemical kinetics strongly depends on irradiance, temperature and fluid flow distribution around the reactant. Radiation heat transfer is calculated by using surface-to-surface (S2S) radiation model. Thermo-fluid flow, absorption efficiency and the temperature distribution of the sample are predicted as a function of time and the model is validated by experimental measurements. (C) 2013 The Authors. Published by Elsevier Ltd.

    DOI: 10.1016/j.egypro.2014.03.079

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  • Transient numerical analysis of storage tanks based on encapsulated PCMs for heat storage in concentrating solar power plants 査読

    Selvan Bellan, Jose Gonzalez-Aguilar, Antonio Ramos Archibold, Manuel Romero, Muhammad M. Rahman, D. Yogi Goswami, Elias K. Stefanakos

    2013 ISES SOLAR WORLD CONGRESS   57   672 - +   2014年

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    記述言語:英語   掲載種別:研究論文(国際会議プロシーディングス)   出版者・発行元:ELSEVIER SCIENCE BV  

    This paper presents numerical analysis on the performance of latent heat packed bed thermal energy storage system, which is composed of spherical capsules filled with sodium nitrate as phase change material and high temperature synthetic oil (Therminol 66) as Heat Transfer Fluid. The influence of capsule size, fluid temperature (Stefan number), Tank size (length and diameter) and fluid flow rate on the performance of the thermal energy storage system is investigated in the temperature range between 300 and 400 degrees C. The phase change process inside the capsule is modeled by enthalpy formulation method and the flow inside the system is predicted by extended brinkman equation. This model is validated using the already reported models. The ultimate aim of this investigation is to develop a packed bed thermal energy storage model to study and optimize the main components of the storage tank to use in concentrating solar power plants. (c) 2014 The Authors. Published by Elsevier Ltd.

    DOI: 10.1016/j.egypro.2014.10.222

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  • In-flight behavior of lanthanum zirconate (La2Zr2O7) particles in gas tunnel type plasma jet and its coating properties 査読

    S. Yugeswaran, Akira Kobayashi, B. Selvan, P. V. Ananthapadmanabhan

    VACUUM   88   139 - 143   2013年2月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:PERGAMON-ELSEVIER SCIENCE LTD  

    Numerical simulation of in-flight particles in thermal plasma jet is one of the most important research fields. It has been used to analyze the influence of spray parameters on jet characteristics and to improve the quality of coating during plasma spraying. In this study, in-flight behavior of a group of lanthanum zirconate (La2Zr2O7) particles with different diameters (10-60 mu m) in gas tunnel type plasma jet is investigated by numerical modeling. The influence of torch power on the plasma jet is investigated and its interaction with different sizes of La2Zr2O7 particles is studied under optimized spraying conditions. The resultant coating properties are also investigated and correlated with simulation results. The simulation results showed that the plasma jet temperature and velocity increased while increasing the torch power. Consequently, the in-flight particle temperature and velocity profile also increased with respect to the torch power. (C) 2012 Elsevier Ltd. All rights reserved.

    DOI: 10.1016/j.vacuum.2012.02.002

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  • Thermal performance of lab-scale solar reactor designed for kinetics analysis at high radiation fluxes 査読

    セルバン ベラン

    Chemical Engineering Science   101   81 - 89   2013年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

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  • Experimental and simulation approach to plasma spray deposition of yttrium oxide 査読

    T. K. Thiyagarajan, P. V. Ananthapadmanabhan, K. P. Sreekumar, Y. Chakravarthy, A. K. Das, L. M. Gantayet, B. Selvan, K. Ramachandran

    SURFACE ENGINEERING   28 ( 9 )   646 - 656   2012年10月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:MANEY PUBLISHING  

    Plasma sprayed coatings of yttrium oxide, exhibiting good adhesion and thermal shock resistance, were developed on various substrates using thermal spray grade yttrium oxide powder developed in our laboratory. Numerical simulation of particle behaviour in the thermal plasma jet was combined with experimental method to develop the coatings. Phase structure and microstructural characterisation of the deposits were evaluated by X-ray diffraction, Raman spectroscopy and scanning electron microscopy. Deposition efficiencies and adhesion strength of the coatings deposited at different power levels could be well explained with the predictions provided by the model. The process was optimised using deposition efficiency as the response parameter.

    DOI: 10.1179/1743294412Y.0000000019

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  • Numerical Modelling of Ar-N-2 Plasma Jet Impinging on a Flat Substrate 査読

    B. Selvan, K. Ramachandran, B. C. Pillai, D. Subhakar

    JOURNAL OF THERMAL SPRAY TECHNOLOGY   20 ( 3 )   534 - 548   2011年3月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:SPRINGER  

    Substrate heating in the plasma spray process is one of the important parameters, which affects the microstructure of coatings and bonding between coating and substrate. In this study, a three-dimensional numerical model is developed to study the thermal exchange between the plasma jet and the substrate. The plasma jet temperature and velocity distributions and thermal flux to the substrate surface are predicted. The effects of arc current, gas flow rate, and stand-off distance on the temperature and velocity fields of the impinging plasma jet and thermal flux to the substrate are clarified. Results indicate that the three-dimensional effect has a very weak influence on the substrate heating. The air entrainment is compared for different cases. The present model is validated by comparing the present results with previous predictions and measurements. The temperature distributions in the substrate for different stand-off distances are predicted.

    DOI: 10.1007/s11666-010-9587-8

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  • Modelling of the plasma-substrate interaction and prediction of substrate temperature during the plasma heating 査読

    B. Selvan, K. Ramachandran, B. C. Pillai, D. Subhakar

    EUROPEAN PHYSICAL JOURNAL D   61 ( 3 )   663 - 675   2011年2月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:SPRINGER  

    Temperature of the substrate during plasma heating and spraying plays an important role on quality of the substrate and coating. In this study a three dimensional numerical model is developed to simulate the Ar-N(2) plasma jet and conjugate heat transfer between plasma and substrate. The influencing of operating parameters on thermal flux from the plasma to the substrate and substrate temperature are discussed. Transient simulations are carried out to predict the substrate temperature with heating time. The arc current, gas flow rate, stand-off distance, substrate material and environment around the substrate significantly affect the thermal flux to the substrate. Heat flux to the substrate cannot be neglected in the coating built-up models. Present model is validated by comparing the results of present model with previous predictions and measurements.

    DOI: 10.1140/epjd/e2010-10443-1

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  • Modelling of non- transferred Argon-Nitrogen Plasma Arc and Plasma Jet 査読

    B. Selvan, K. Ramachandran, T. K. Thiyagarajan, K. P. Sreekumar, P. V. Ananthapadmanabhan

    23RD NATIONAL SYMPOSIUM ON PLASMA SCIENCE AND TECHNOLOGY (PLASMA-2008)   208 ( 012047 )   2010年

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    記述言語:英語   掲載種別:研究論文(国際会議プロシーディングス)   出版者・発行元:IOP PUBLISHING LTD  

    One of the challenging problems in the plasma spray technique is reproducibility of the coating quality. This problem is mainly associated with arc fluctuations, which affect the plasma jet temperature and velocity inside the plasma torch. In this study, three-dimensional numerical models are developed to study the behaviour of Ar-N-2 plasma arc inside a non-transferred torch and plasma jet. Ar-N-2 plasma arc is simulated for given arc current and gas flow rate. Different arc sizes, which correspond to given torch power, are predicted. A most feasible arc size, which corresponds to an actual physical situation of the arc inside the torch, is identified using thermodynamic principle of minimum entropy production for particular torch power. Predicted torch efficiency is comparable with measured one. Cathode and anode losses are reported. Predicted temperature and velocity profiles at the nozzle exit are used to simulate the plasma jet. Since plasma gas is mixed with cold air, plasma jet is diffused in the radial direction. Three-dimensional effect on plasma jet temperature and velocity is diminishes along the axial direction.

    DOI: 10.1088/1742-6596/208/1/012047

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  • Numerical and experimental studies on DC plasma spray torch 査読

    セルバン ベラン

    Vacuum   84   444 - 452   2010年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

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  • Simulation studies to optimize the process of plasma spray deposition of yttrium oxide 査読

    T. K. Thiyagarajan, K. P. Sreekumar, V. Selvan, K. Ramachandran, P. V. Ananthapadmanabhan

    23RD NATIONAL SYMPOSIUM ON PLASMA SCIENCE AND TECHNOLOGY (PLASMA-2008)   208   012116   2010年

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    記述言語:英語   掲載種別:研究論文(国際会議プロシーディングス)   出版者・発行元:IOP PUBLISHING LTD  

    Simulation studies on the thermal behaviour of yttrium oxide particles in a thermal plasma jet was carried out with the objective of controlling and optimization of the plasma spray process. The 'in-flight' behaviour of yttrium oxide particles in the plasma jet was studied by solving the heat transfer and momentum transfer equations using the velocity and temperature distribution in the plasma jet obtained from a two-dimensional model. In particular, the effect of particle size, thermal power of the torch and the torch operating parameters like gas flow rates were considered to calculate the heat transfer and momentum transfer to the particle. Results of simulation studies agree quite well with the experimental results on variation of deposition efficiency with power and particle size. The complete description of the model with the results obtained for the typical operating parameters of our plasma spray torch is presented in the paper.

    DOI: 10.1088/1742-6596/208/1/012116

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  • Comparisons Between Two Different Three-Dimensional Arc Plasma Torch Simulations 査読

    B. Selvan, K. Ramachandran

    JOURNAL OF THERMAL SPRAY TECHNOLOGY   18 ( 5-6 )   846 - 857   2009年12月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:SPRINGER  

    Several numerical models have been developed to study the characteristics of an arc inside the nontransferred plasma torch. A few of them have considered complete geometry of cathode and anode nozzle (type I) whereas others have considered only anode nozzle with cathode tip (type II). In this work, a three-dimensional model is developed to simulate Ar-N(2) arc in type I and type II geometries. Various combinations of the arc length and arc core radius are predicted for the torch power that corresponds to given gas flow rate and current. Various combinations of the same and minimum entropy production for all cases could not be predicted in type II geometry. The difference between velocities predicted in both geometries is larger than that between temperatures. Three-dimensional effect in the plasma jet thermo-fluid fields demises along the axial direction. Torch efficiencies and arc voltages predicted in both geometries are comparable with measurements.

    DOI: 10.1007/s11666-009-9343-0

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  • Three-Dimensional Numerical Modeling of an Ar-N-2 Plasma Arc Inside a Non-Transferred Torch 査読

    B. Selvan, K. Ramachandran, K. P. Sreekumar, T. K. Thiyagarajan, P. V. Ananthapadmanabhan

    PLASMA SCIENCE & TECHNOLOGY   11 ( 6 )   679 - 687   2009年12月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:IOP PUBLISHING LTD  

    A three-dimensional numerical model is developed to study the behaviour of an argon-nitrogen plasma arc inside a non-transferred torch. In this mode, both the entire cathode and anode nozzle are considered to stimulate the plasma arc. The argon-nitrogen plasma arc is simulated for different arc currents and gas flow rates of argon. Various combinations of arc core radius and arc length, which correspond to a given torch power, are predicted. A most feasible combination of the same, which corresponds to an actual physical situation of the arc inside the torch, is identified using the thermodynamic principle of minimum entropy production for a particular torch power. The effect of the arc current and gas flow rate on the plasma are characteristics and torch efficiency is explained. The effect of nitrogen content in the plasma gas on the torch power and efficiency is clearly detected. Predicted torch efficiencies are comparable to the measured ones and the effect of the arc current and gas flow rate on predicted and measured efficiencies is almost similar. The efficiency of the torch, cathode and anode losses and core temperature and velocity at the nozzle exit are reported for five different cases.

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MISC

受賞

  • Excellent young Researcher 2019 Award

    2019年9月   From the President of Niigata University  

    セルバン ベラン

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  • Outstanding Postdoctoral Scientist 2014 Award

    2014年12月   Madrid Institute for Advanced Studies in Energy, Spain  

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  • Marie Curie Postdoctoral Fellowship

    2012年   Marie Curie Action, Amarout, European Union FP7-People Program  

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  • Junior Research Fellowship

    2007年   Board of Research on Nuclear Sciences, DAE, Government of India  

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  • Young Scientist Award

    2007年   Indian Society of analytical scientists (ISAS), Kerala, India.  

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共同研究・競争的資金等の研究

  • Development of high temperature sensible/thermochemical heat storage system for high efficiency solar thermal power generation

    2021年 - 2024年

    KAKENHI Grant in aid for scientific research 

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    担当区分:研究代表者 

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  • International Joint Research and Development of Solar Concentrating Reactor for Carbon Dioxide Decomposition

    2020年 - 2023年

    NEDO 

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    担当区分:研究分担者 

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  • Research and development of fluidized bed sensible heat / chemical heat storage system for high efficiency solar power generation

    2019年 - 2021年

    KAKENHI Grant in aid for scientific research 

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    担当区分:研究分担者 

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  • Solar Thermochemical Hydrogen Research and Development

    2018年 - 2022年

    ARENA (Australian renewable energy agency) 

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    担当区分:研究分担者 

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  • Cost analysis of cascaded latent thermal energy storage systems composed of ceramic capsules and molten salts

    2018年

    FS Contract work to Ministry of Environment through Institute of Applied Energy 

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    担当区分:研究代表者 

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  • Development of a solar-collected hydrothermal hydrogen production system using low-temperature reactive ceramics

    2017年 - 2019年

    KAKENHI Grant in aid for scientific research 

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    担当区分:研究分担者 

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  • Solar Thermal Energy Utilization (Mechanical/Chemical Engineering)

    2016年 - 2020年

    Ministry of Education, Science and Technology 

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    担当区分:研究代表者 

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  • An innovative latent thermal energy storage system encapsulated by ceramic PCM capsules for concentrated solar thermal energy plants

    2016年 - 2018年

    KAKENHI Grant in aid for scientific research 

    セルバン ベラン

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    担当区分:研究代表者  資金種別:競争的資金

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  • Development of solar concentrating thermochemical water splitting hydrogen production system via solar demonstration

    2016年

    KAKENHI Grant in aid for scientific research 

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    担当区分:研究分担者 

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  • Thermochemical Energy Storage for Concentrated Solar Power Plants

    2012年 - 2015年

    FP7-Cooperation, Project No. FP7-ENERGY-2011-1 

    セルバン ベラン

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    担当区分:研究分担者  資金種別:競争的資金

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  • Innovative Latent Thermal Energy Storage System for Concentrating Solar Power Plants

    2012年 - 2014年

    E.ON International Research Initiative, UK 

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    担当区分:研究分担者  資金種別:競争的資金

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  • Modular, Efficient and Dispatchable High Flux Solar Thermal Power Systems (SOLGEMAC)

    2012年 - 2013年

    Comunidad de Madrid, Spain  Program of R&D activities between research groups in Technology 

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    担当区分:研究分担者  資金種別:競争的資金

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担当経験のある授業科目

  • 先端的国際工学特論II

    2022年
    -
    現在
    機関名:新潟大学

  • 先端研究入門

    2022年
    -
    現在
    機関名:新潟大学

  • 先端的国際工学特論I

    2022年
    -
    現在
    機関名:新潟大学

  • 国際工学特論

    2022年
    -
    現在
    機関名:新潟大学

  • エネルギー関連国際学会コミュニケーション法

    2022年
    -
    現在
    機関名:新潟大学

  • 物理化学III

    2020年
    -
    現在
    機関名:新潟大学

  • 応用化学演習III

    2020年
    -
    現在
    機関名:新潟大学

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