Researcher Database

CHIKAHISA Takemi
Faculty of Engineering Energy and Environmental Systems Applied Energy Systems
Specially Appointed Professor

Researcher Profile and Settings

Affiliation

  • Faculty of Engineering Energy and Environmental Systems Applied Energy Systems

Job Title

    Specially Appointed Professor

Degree

  • Doctor of Engineering, Hokkaido University
  • Master of Science, University of Wisconsin, Madison
  • Master of Engineering, Hokkaido University, Hokkaido University

URL

Research Interests

  • PEFC   Cryo-SEM   Fuel Cell   Internal Combustion Engine   Combustion   Social Energy Systems   

Research Areas

  • Mechanical engineering / Thermal engineering
  • Integrated engineering / Energy engineering

Academic & Professional Experience

  • 2003 - Today    - Professor,Professor, Div. of Energy and Environmental Systems, Graduate School of Engineering, Hokkaido University
  • 1986 - 2003     Associate Professor,Associate Professor, Heat Energy Conversion Lab, Hokkaido University
  • 1982 - 1984     Lecturer,Assistant Professor, Dept. of Mechanical Engineering, Hokkaido University2003-date Professor, Dept. of Mechanical Engineering, Hokkaido University
  • 1984 - 1986     Associate Professor,Associate Professor, Lab. of Heat Engines II, Dept. of Mechanical Engineering, Hokkaido University

Education

  • 1978/04 - 1982/03  Hokkaido University  Graduate School, Department of Mechanical Engineering  Ph-D  japan
  • 1978/09 - 1980/01  University of Wisconsin-Madison  Graduate School, Mechanical Engineering  Master of Science
  • 1976/04 - 1978/03  Hokkaido University  Graduate School, Depertment of Mechanical Engineering  Master of Engineering  japan
  • 1972/04 - 1976/03  Hokkaido University  Faculty of Engineering  Department of Mechanical Engineering

Association Memberships

  • Japan Society of Mechanical Engineers   Japan Society of Automotive Engineers   Society of Automotive Engineers (USA)   The Heat Transfer Society of Japan   Combustion Society of Japan   Japan Society of Energy and Resources   

Research Activities

Published Papers

MISC

  • SUZUKI KENGO, NAKANISHI TAKAHIRO, TABE YUTAKA, CHIKAHISA TAKEMI  日本機械学会論文集(Web)  80-  (812)  WEB ONLY TEP0092  2014   [Not refereed] [Not invited]
  • 赤澤眞之, 鈴木研悟, 田部豊, 近久武美  エネルギー・資源学会研究発表会講演論文集(CD-ROM)  33rd-  ROMBUNNO.12-4  2014   [Not refereed] [Not invited]
  • 田部豊, 門脇翼, 杉本亮, 鈴木研悟, 近久武美  日本伝熱シンポジウム講演論文集(CD-ROM)  51st-  ROMBUNNO.C135  2014   [Not refereed] [Not invited]
  • 鈴木研悟, 佐藤大樹, 田部豊, 近久武美  日本伝熱シンポジウム講演論文集(CD-ROM)  51st-  ROMBUNNO.C111  2014   [Not refereed] [Not invited]
  • 赤堀渉, 鈴木研悟, 田部豊, 近久武美  日本伝熱シンポジウム講演論文集(CD-ROM)  51st-  ROMBUNNO.ESP308  2014   [Not refereed] [Not invited]
  • 大田純, 鈴木研悟, 田部豊, 近久武美  エネルギーシステム・経済・環境コンファレンス講演論文集(CD-ROM)  30th-  ROMBUNNO.13-4  2014   [Not refereed] [Not invited]
  • 青木利憲, 鈴木研悟, 田部豊, 近久武美  エネルギーシステム・経済・環境コンファレンス講演論文集(CD-ROM)  30th-  ROMBUNNO.6-2  2014   [Not refereed] [Not invited]
  • 青山祐介, 鈴木研悟, 田部豊, 近久武美, 田沼敏弘  日本伝熱シンポジウム講演論文集(CD-ROM)  51st-  ROMBUNNO.C114  2014   [Not refereed] [Not invited]
  • 荒戸景太, 港明彦, 島崎直基, 高嶋輝之, 田部豊, 近久武美  自動車技術会学術講演会前刷集  (115-13)  7  -12  2013/10   [Not refereed] [Not invited]
  • KASHIWASE KOJI, TABE YUTAKA, CHIKAHISA TAKEMI  日本機械学会論文集 B編(Web)  79-  (806)  WEB ONLY 2217-2227  2013   [Not refereed] [Not invited]
  • KADOWAKI Kazumasa, TABE Yutaka, CHIKAHISA Takemi  2010-  (49)  21  -22  2010/11   [Not refereed] [Not invited]
  • KIMURA Yoshitaka, TABE Yutaka, CHIKAHISA Takemi  2010-  (49)  23  -24  2010/11   [Not refereed] [Not invited]
  • NAMBA Ryouji, TABE Yutaka, CHIKAHISA Takemi  2010-  (49)  25  -26  2010/11   [Not refereed] [Not invited]
  • NASU Takuya, MORIOKA Satoshi, TABE Yutaka, CHIKAHISA Takemi  2010-  (49)  63  -64  2010/11   [Not refereed] [Not invited]
  • SATOH Daiwa, TABE Yutaka, CHIKAHISA Takemi  2010-  (49)  103  -104  2010/11   [Not refereed] [Not invited]
  • Ichikawa Ryosuke, TABE Yutaka, CHIKAHISA Takemi  2010-  (49)  105  -106  2010/11   [Not refereed] [Not invited]
  • ZHU Qianjin, TABE Yutaka, CHIKAHISA Takemi  2010-  (49)  107  -108  2010/11   [Not refereed] [Not invited]
  • SAKAIDA Satoshi, TABE Yutaka, CHIKAHISA Takemi  2010-  (49)  109  -110  2010/11   [Not refereed] [Not invited]
  • Sasaki Takayuki, Tabe Yutaka, Chikahisa Takemi  The Computational Mechanics Conference  2010-  (23)  303  -304  2010/09   [Not refereed] [Not invited]
  • SHIMODATE Takuya, TABE Yutaka, CHIKAHISA Takemi  The Computational Mechanics Conference  2010-  (23)  305  -306  2010/09   [Not refereed] [Not invited]
  • KASHIWASE Koji, TABE Yutaka, CHIKAHISA Takemi  2010-  (7)  205  -206  2010/09   [Not refereed] [Not invited]  
    This paper shows the experimental result of hydrogen generation efficiency by PEM electrolysis. The straight channel and titanium porous body were compared in performance. The following possibilities were shown by the experimental result: (1) The efficiency rises with increasing of temperature. (2) The porous body gave higher performance than the straight channel. (3) Cell performance deteriorated in repeating operation at relatively low current density, partially due to dry out.
  • CHIKAHISA Takemi  Marine Engineering  45-  (4)  2010/07   [Not refereed] [Not invited]
  • CHIKAHISA Takemi, OSONE Yasuo, KURODA Akiyoshi, KUWAHARA Fujio, SAKASHITA Hiroto, TOTANI Tsuyoshi, NAKAMURA Yuji, YAMADA Masahiko, TABE Yutaka  Journal of the Heat Transfar Society of Japan  49-  (208)  19  -28  2010/07   [Not refereed] [Not invited]
  • NASU Takuya, MORIOKA Satoshi, TABE Yutaka, CHIKAHISA Takemi  National Symposium on Power and Energy Systems  2010-  (15)  385  -386  2010/06   [Not refereed] [Not invited]  
    This study conducted perfomance evaluation of single cell with porous cathode separataor. The direct observation of the porous separator cross-section and the impedance spectra were applied. The observation showed that the porous separator is superior in the drainage performance from the GDL surface, and the hydrophily of separator fiber is important for the performance. The results of impedance spectra indicated that the porous separator is superior to the serpentine separator in the supply of reactant gas.
  • NAMBA Ryouji, SAITO Masataka, TABE Yutaka, CHIKAHISA Takemi  National Symposium on Power and Energy Systems  2010-  (15)  387  -388  2010/06   [Not refereed] [Not invited]  
    In PEM Fuel Cell below zero, freezing under cold start sometimes causes a temporal deterioration of cell performance in normal temperature operation. This paper investigates the mechanisms of the cold start effect on operation at normal temperature and the ice fomation in catalyst layer. The observation was performed after the cell at the freezing temperature. The results showed that the performance deterioration is caused by the ice formed at the interface between the catalyst layer and GDL, and the control of the ice amount is important to prevent depression. Cryo-SEM observation showed that there is ice in the catalyst layer, which causes the shut down, and the distribution of formed ice is affected by the operation condition.
  • KUROKAWA Shingo, TABE Yutaka, CHIKAHISA Takemi  2009-  (48)  157  -158  2009/11   [Not refereed] [Not invited]
  • SHIMODATE Takuya, TABE Yutaka, CHIKAHISA Takemi  2009-  (48)  159  -160  2009/11   [Not refereed] [Not invited]
  • NISHINO Masayoshi, TABE Yutaka, CHIKAHISA Takemi  2009-  (48)  161  -162  2009/11   [Not refereed] [Not invited]
  • Sasaki Takayuki, Tabe Yutaka, Chikahisa Takemi  2009-  (48)  163  -164  2009/11   [Not refereed] [Not invited]
  • Miyata Noritsugu, Kikuta Kazushige, Tabe Yutaka, Chikahisa Takemi  Procee[d]ings of Thermal Engineering Conference  2009-  135  -136  2009/11   [Not refereed] [Not invited]  
    The phenomenon in the vaporizer for low volatile organic solvent is analyzed and the performances of the two types of vaporizer are evaluated. The numerical simulation shows that the vaporizer using a two-fluid nozzle cannot fully utilize the tube space because of the strong penetration characteristic and the low adjusting capability of the flow pattern. The vaporizer with ultrasonic nozzle and gas inlets is presented to avoid the disadvantages above. It is demonstrated that the ultrasonic nozzle type can achieve more than 6 times particle residence time as compared with the two-fluid nozzle type and it can be applied for the evaporator of the low volatile organic solvents.
  • TABE Yutaka, LEE Yongju, YASSER Ben Salah, CHIKAHISA Takemi  2009-  (7)  133  -134  2009/09   [Not refereed] [Not invited]  
    The simulation using the lattice Boltzmann method (LBM) has been developed to understand the behavior of liquid water and gas flow in porous media of PEM fuel cells. The original LBM code was parallelized and a increase in solving speed of the Poisson equation was made by the conjugate gradient (CG) method for the large-scale simulation. Some validation calculations were conducted and the rate of speeding up was verified. Using the parallelized LBM code with the CG method, the behavior of liquid water in a gas diffusion layer was simulated and the applicability of our code to two-phase simulation in a porous medium of PEM fuel cells are presented.
  • Soe Naing Kyaw Swar, Kikuta Kazushige, Tabe Yutaka, Chikahisa Takemi  National Symposium on Power and Energy Systems  2009-  (14)  163  -164  2009/06   [Not refereed] [Not invited]
  • TABE Yutaka, UNO Kouta, CHIKAHISA Takemi  National Symposium on Power and Energy Systems  2009-  (14)  393  -394  2009/06   [Not refereed] [Not invited]  
    Long-term CO_2 emission analyses on the energy structure in Japan were conducted using the MARKAL. The MARKAL model is one of analysis tools to evaluate the long-term change of energy system in a country, and is composed of energy resources, energy supply technologies, energy ultimate demand technologies and energy service demands with them connected by energy carriers. This paper presents the analyses investigating energy structure at house and effects of CO_2 capture and storage (CCS) until 2050. It was shown that the usage of electricity and gas is strongly affected by the investment costs, and the large reduction is needed for CGS widespread use. The results also showed that the CCS is effective in the case that the installed capacity of nuclear power plant, and the effective capture of CO_2 reduces the social costs for the reduction of CO_2 emission.
  • MORIOKA Satoshi, TABE Yutaka, CHIKAHISA Takemi  28-  (2)  103  -104  2008/09   [Not refereed] [Not invited]
  • MIYATA Noritsugu, KIKUTA Kazushige, CHIKAHISA Takemi  28-  (2)  113  -114  2008/09   [Not refereed] [Not invited]
  • KASHIWASE Koji, KIKUTA Kazushige, TABE Yutaka, CHIKAHISA Takemi  2008-  (3)  53  -54  2008/08   [Not refereed] [Not invited]  
    Experiment and numerical simulation indicated that the large NOx formation in diesel engine is due to the weak mixing intensity in the spray tip region, where the flow and turbulence structure is quite different from the continuous jet flames. The fact indicates that there is a possibility of reducing NOx from diesel engines by enhancing mixing intensity at the spray tip region to the level of continuous jet flame. This paper presents the analysis of NOx formation in diesel engines using HTB-DECS to confirm the effect of pre-shock jet. This analysis performed by changing the magnitude and/or timing of the turbulence that influences the air entrainment into the fuel-spray. The results show that NOx formation is greatly related in the turbulence strength. It is very important to control the timing to give the strong turbulence. Furthermore, the simulation also performed by the jet flame with/without the impinging jet using FLUENT. The large NOx reduction was able to be confirmed in the case with the impinging jet.
  • TAKAMATSU Hiroyuki, TABE Yutaka, KIKUTA Kazusige, CHIKAHISA Takemi  2008-  (7)  25  -26  2008/08   [Not refereed] [Not invited]  
    To decrease the usage of the Pt catalyst in polymer electrolyte membrane fuel cell (PEMFC), optimization of catalyst layer structure and three-phase zone is one of key issues. In this study, numerical simulation was conducted to investigate the relation between the structure of cathode catalyst layer and cell performance (over voltage and current density). From the calculation results, suitable structures, porosity and polymer electrolyte thickness, for gas diffusion and proton conduction were clarified.
  • SAITO Masataka, TABE Yutaka, KIKUTA Kazushige, CHIKAHISA Takemi  National Symposium on Power and Energy Systems  2008-  (13)  233  -236  2008/06   [Not refereed] [Not invited]  
    To develop the numerical simulation of PEM fuel cell, verification experiments and data acquisition of physical parameters were conducted by mechanical and electrochemical measurements. The mechanical measurement showed that the GDL deformation due to clamping by separator lands is important phenomenon to estimate an actual flow in the cell, and the unique deformation behavior of GDL with fabric construction was clarified. From the electrochemical measurement, the methods to acquire the parameters used in the simulation, proton conductivity σ_m, electrochemically active Pt area a, exchange current density i_o and cathode transfer coefficient α_c were established. Furthermore, the possibility to analyze flooding phenomenon by applying this electrochemical measurement was presented.
  • YAMASHITA Kouhei, KIKUTA Kazushige, TABE Yutaka, CHIKAHISA Takemi  National Symposium on Power and Energy Systems  2008-  (13)  245  -248  2008/06   [Not refereed] [Not invited]  
    To maintain the high performance in PEFC, water management which keep an electrolyte film to the adequate wet is necessary. The gas diffusion layer (GDL) fulfils large role in it. In this study cell characteristics was tested using GDL with various characteristics. As a result it was showed that the rigidity was necessary for GDL to keep the contact resistance stably low. In GDL with the same carbon-fiber direction, the difference of the cell performance occurred by changing the channel direction. It was thought that the gas diffusion under the separator rib was changed, because the difference could not be seen in both of the visualization image.
  • KOZAKAI Masaya, OKUSAWA Tsutomu, SATAKE Hiroyuki, TAKAHASHI Ko, TABE Yutaka, CHIKAHISA Takemi  National Symposium on Power and Energy Systems  2008-  (13)  249  -250  2008/06   [Not refereed] [Not invited]  
    High power density enhances polymer electrolyte fuel cell with widely varied applications. Our investigation focused on the refinement of the reactant gas flow field at the bipolar plate in order to increase the fuel cell performance. Applying a porous material to the reactant gas flow field is one possible method. Expected advantages of a porous flow field are an increase in reactant gas diffusivity and electron conductivity allover the electrode. An investigation was carried out to evaluate the feasibility of a porous flow field. The Lattice Boltzman simulation indicated that surface wettability and pore structure control have prospect of gas and water flow field separation. The experiment of porous flow field showed same level performance of channel type.
  • SENO Kenji, TABE Yutaka, CHIKAHISA Takemi  24-  293  -296  2008/01   [Not refereed] [Not invited]
  • TAKAHASHI Hiroshi, SEKIGUCHI Shigeyuki, CHIKAHISA Takemi  Transactions of the Japan Society of Mechanical Engineers. B  74-  (737)  196  -203  2008/01   [Not refereed] [Not invited]  
    The authors developed PEM fuel cells consisting of thin separators with the thickness of 0.8mm. The paper investigates the dependence of cell performance on the gas diffusion layer (GDL) thickness, hydrophobic characteristics of GDL, binding contact pressure, channel depth, temperature and water content in the working gases. The result shows that the pressure losses increase inversely proportional to the third power of the channel depth and it increases significantly for the channel depth less than 0.2mm. The best performance was obtained with a GDL which has relatively lower hydrophobic characteristics. It was also shown that better performance was obtained with relatively thinner GDL for the shallow channel depth of 0.3mm used in the experiment. The paper also proposes a simple estimation of liquid water amount in the cell, which may be used for the control of water management.
  • Takahashi Hiroshi, Sekigutci Shigeyuki, Chikahisa Takemi  Procee[d]ings of Thermal Engineering Conference  2007-  233  -234  2007/11   [Not refereed] [Not invited]  
    The authors developed PEM fuel cells consisting of thin separators with the thickness of 0.8mm. The paper investigates the channel depth in the separators on cell performance and the pressure losses. The result shows that the pressure loss increases inversely proportional to the third power of the channel depth and it increases significantly for the channel depth less than 0.2mm. Compared with the channel depth of 0.5mm, the channel with 0.3mm depth showed better cell-voltage-performance: voltage fluctuation was smaller with 0.3mm depth and the cell voltage itself was higher than the 0.5mm channel particularly at higher current density conditions. This result indicates that specific value of pressure loss or gas velocity is necessary for the cell to supply cathode gas to the catalytic layer without flooding. This suggests the possibility of straight channels with thin depth to give good performance.
  • YASUKAWA Daiyu, KIKUTA Kazushige, CHIKAHISA Takemi, DAIHO Koji  Procee[d]ings of Thermal Engineering Conference  2007-  419  -420  2007/11   [Not refereed] [Not invited]  
    Recently, compound semicouductors have grown up as a key material. However, the growth of dislocation-free compound semiconductor crystals are still impossible. So, the targets are low dislocation densities of uniform distribution. Dislocation densities are closely related to configuration of solid-liquid boundary of GaAs. We have tried to simulate temperature distribution of the equipment of LEC-growth of GaAs crystal. The numerical simulation with 2-D steady model are performed using FLUENT. In case when melt treated as solid, the numerical simulation apparently could not simulate real temperature distribution of GaAs melt. In case when melt is treated as liquid, simulation results get close to real distribution. So, convection flow of GaAs melt are important by simulating temperature distribution of GaAs melt. It is necessary to identify dominative factors on flow and temprature profiles.
  • Soe Naing Kyaw Swar, Tabe Yutaka, Chikahisa Takemi  Procee[d]ings of Thermal Engineering Conference  2007-  399  -400  2007/11   [Not refereed] [Not invited]  
    This paper analyzes the effectiveness of CGS for the CO_2 and cost reductions in the prospective distributed energy system, which is a future type system using heat pump for heating instead of boiler. The CGS effectiveness in different building types and regions are discussed, where COP dependencies on the ambient temperature and demands of heating or cooling are considered. The results show that CO_2 reduction effect of CGS in the prospective system is lower than that in the conventional system but the cost reduction effect is higher. It was also shown that the prospective CGS is more advantageous and appropriate in cold region.
  • UNO Kouta, TABE Yutaka, CHIKAHISA Takemi  2007-  (46)  149  -150  2007/09   [Not refereed] [Not invited]
  • Takashima Yusuke, Chikahisa Takemi, Tabe Yutaka, Kikuta Kazusige  2007-  (46)  145  -146  2007/09   [Not refereed] [Not invited]
  • Lee Yongju, Kibo Kohsuke, Tabe Yutaka, Kikuta Kazusige, Chikahisa Takemi  2007-  (46)  15  -16  2007/09   [Not refereed] [Not invited]
  • TAKAMATSU Hiroyuki, TABE Yutaka, KIKUTA Kazusige, CHIKAHISA Takemi  2007-  (46)  13  -14  2007/09   [Not refereed] [Not invited]
  • MORIMITSU Kazuhiro, SASAKI Takafumi, FUKUDA Masanao, DAIKOKU Takahiro, KIKUTA Kazushige, CHIKAHISA Takemi, HISHINUMA Takao  Transactions of the Japan Society of Mechanical Engineers. B  73-  (732)  1599  -1605  2007/08   [Not refereed] [Not invited]  
    The paper investigates the method of improving deposition rate in semiconductor deposition process, while maintaining film thickness uniformity and step coverage in a vertical LPCVD (Low-Pressure Chemical Vapor Deposition) system. In general increasing pressure improves deposition rate, but it decreases uniformity of thickness. The result of experiment and the numerical simulation showed that the non-uniformity of film thickness in high-pressure condition can be improved by controlling flow patterns in the space between wafers. In the molecular flow region (low pressure), the deposition rate and the step coverage were not influenced by the source gas flow rate. In the viscous flow region (high pressure), the step coverage can be improved by increasing source gas flow rate. For the flow the nozzle design and exhaust port location are important. Installation of rings outside of wafers is also effective for the improvement of thickness uniformity.
  • CHIKAHISA Takemi  46-  (196)  2007/07   [Not refereed] [Not invited]
  • YOSHIDA Daisuke, YASUDA Yousuke, TABE Yutaka, KIKUTA Kazushige, CHIKAHISA Takemi, KOZAKAI Masaya  National Symposium on Power and Energy Systems  2007-  (12)  259  -262  2007/06   [Not refereed] [Not invited]  
    The objective of this paper is to observe water production behavior inside of the cell and to analyze its effect on current distributions over the reaction area. A fuel cell was made to allow direct observation of the phenomena in cathode side and local current density measurement in anode side. The experimental results showed that the cell performance and current density distribution of air operation is strongly affected by the condensed water compared with those of O_2 operation, although the drainage of air operation is superior. It was also shown from the comparison experiments of separator type that the serpentine separator has advantage to drain away the condensed water because of its high gas velocity, and may make gas paths deep in the gas diffusion layer. On the other hand, when the condensed water is drained efficiently, the straight separator can realize homogeneous current density distribution because of its shorter channel paths.
  • KAKAZU Kei, TABE Yutaka, CHIKAHISA Takemi  23-  465  -468  2007/01   [Not refereed] [Not invited]
  • CHIKAHISA Takemi  46-  (194)  2007/01   [Not refereed] [Not invited]
  • Soe Naing Kyaw Swar, Tabe Yutaka, Chikahisa Takemi  Procee[d]ings of Thermal Engineering Conference  2006-  59  -60  2006/11   [Not refereed] [Not invited]  
    This paper analyzes CGS effectiveness for the CO_2 reduction, and the effects of use of heat pump for heating were investigated at various power plant efficiencies and the COP of heat pump. In the next-generation, it is essential to apply the system with heat pump for heating instead of boiler. The calculation results show that CGS benefit for CO_2 emission is strongly affected by the COP of heat pump and the electric efficiency of CGS is needed to be close to that of power plant efficiency to have a beneficial effect in the prospective system with heat pump. The electrical efficiency of CGS must be higher than the present system with boiler to get the benefits.
  • CHIKAHISA Takemi  45-  (193)  2006/10   [Not refereed] [Not invited]
  • Kibo Kohsuke, Tabe Yutaka, Kikuta Kazusige, Chikahisa Takemi  2006-  (45)  171  -172  2006/09   [Not refereed] [Not invited]
  • KAKAZU Kei, TABE Yutaka, CHIKAHISA Takemi  2006-  (45)  183  -184  2006/09   [Not refereed] [Not invited]
  • OTSU Sho, TABE Yutaka, CHIKAHISA Takemi  2006-  (3)  249  -250  2006/09   [Not refereed] [Not invited]  
    This paper presents results of two different trials to reduce NO_x from diesel engines: one is pre-shock injection method and the other is the method with pre-shock jet created by using premixed charge combustion. The both concepts are based on the fact that dominant part of NO_x formation is the area close to the spray tip, where mixing intensity is weak. The mixing intensity of this area is to be maintained high by the two methods. The result shows reasonable effect for the reduction of NO_x, but the extent was not as significant as expected. It was found that the pre-shock jet was not realized in the present setup, and further attempt was necessary to evaluate the concept.
  • TABE Yutaka, IWASA Yoshitaka, CHIKAHISA Takemi  2006-  (7)  173  -174  2006/09   [Not refereed] [Not invited]  
    This paper analyzes primary energy reduction effect of cogeneration system (CGS) installed at individual house with large demand fluctuation, and discusses its improved system. The start-stop operation considering the start-up energy of CGS and heat radiation of thermal storage unit was proposed as a better operation method of CGS installed at individual house. It was shown from the analysis using the actual energy demand pattern of six houses that the start-stop operation is available and electricity network has mitigation effect of large demand fluctuation to increase the primary energy reduction. In order to elucidate the effective improved system, the reduction target was estimated from the analysis using ideal values for power interchange, heat radiation of thermal storage unit, and partial load efficiency of CGS.
  • CHIKAHISA Takemi  45-  (192)  2006/07   [Not refereed] [Not invited]
  • KANEKO Tomomi, KIKUTA Kazushige, CHIKAHISA Takemi  Transactions of the Japan Society of Mechanical Engineers. B  72-  (716)  1037  -1043  2006/04   [Not refereed] [Not invited]  
    Experiment and numerical simulation indicated that the large NO_x formation in diesel engine is due to the weak mixing intensity in the spray tip region, where the flow and turbulence structure is quite different from the continuous jet flames. The fact indicates that there is a possibility of reducing NO_x from diesel engines by enhancing mixing intensity at the spray tip region to the level of continuous jet flame. As one of the attempts to make the velocity profile of diesel spray similar to the steady jet, an inert gas was injected prior to the fuel injection. With the pre-injection of inert gases, the flame apparently became less luminous, and the NO_x emission index decreased to two thirds of the non pre-injection case. Numerical simulation showed that NO decreases with the increase of the pre-injection period, although the maximum temperatures are almost constant in all cases. This suggests that the NO_x reduction is not due to the temperature difference but due to the enhanced mixing and decreased time at high temperature by the pre-injection. The report presents the above results together with photographic analysis of enhanced mixing of spray tip region by preinjection of water.
  • IWASA Yoshitaka, KAWAKAMI Kei, TABE Yutaka, CHIKAHISA Takemi  Transactions of the Japan Society of Mechanical Engineers. B  72-  (714)  469  -476  2006/02   [Not refereed] [Not invited]  
    This paper presents mapping method to show characteristics of cogeneration systems (CGS) for the reduction of carbon dioxide emission and economy. In this mapping method, effects of CGS can be consolidated into rated reduction ratio, relative reduction ratio map, demand repetition map and weight map. These are without recourse to building size or installed capacity. By lapping these maps, it can be easy to evaluate compatibility with each building types and optimal installed capacity. Variation of effects of CGS for different conditions can be evaluated visually from variation of maps. Analyzed charts are useful to evaluate quantitative effects of CGS for various areas and price rates of electric/gas from average annual demand of electricity and heat. Applicable scope of these charts depends on weighted center and dispersion of demands on the demand map.
  • PARK Sang-kyun, KIKUTA Kazushige, TABE Yutaka, CHIKAHISA Takemi, HISHINUMA Yukio  Transactions of the Japan Society of Mechanical Engineers. B  71-  (711)  2808  -2815  2005/11   [Not refereed] [Not invited]  
    The performance of free-breathing polymer electrolyte membrane fuel cell (PEMFC) was studied experimentally and the effect of cathode separator structure on the cell performance was investigated. Two types of cathode separators were used for the cell with 18cm^2 active area: the open type had parallel rectangular open-slits and the cannel type had straight vertical channels with their ends open. The polarization curve, the cell impedance and the contact pressure distribution of the separator were measured for each type. It was clarified that realizing uniform contact pressure of the cell layers is difficult for the open type separator, which causes higher contact resistance and lower cell performance. On the other hand, the channel type separator can keep low contact resistance, and the cell performance is strongly affected by the natural convection inside the channel. It was found that the channel type separator can achieve high performance by optimization of channel design and this type is suitable for the free-breathig PEMFC. A computational three dimensional analysis was performed for the free-breathing cannel type PEMFC with the different channel depths, and it identified the influece of natural convection.
  • IWASA Yoshitaka, TABE Yutaka, CHIKAHISA Takemi  Transactions of the Society of Heating, Air-Conditioning and Sanitary Engineers of Japan  (104)  19  -27  2005/11   [Not refereed] [Not invited]  
    This paper proposes a distributed cooperative cogeneration network system (CGNS) and analyzes the effects of CGNS on carbon dioxide reduction and load leveling for a distribution grid of a residential area in consideration of power limitations. In CGNS, cogenerations accommodate each other with the excessive electricity using the grid. Additionally, the system is equipped with heat storage system and is operated cooperatively to achieve load leveling for power system. The results show that this system can drastically increase the carbon dioxide reduction effect as compared with the conventional cogeneration system without networking. It was also confirmed that this system has the capability of load leveling. It is expected that CGNS can be a valuable energy system to realize cooperation between energy companies and to promote the introduction of cogeneration systems.
  • KUDO Kazuhiko, KURODA Akiyoshi, SHINJI Teiichirou, SHIMAZU Yosuke, CHIKAHISA Takemi  Procee[d]ings of Thermal Engineering Conference  2005-  123  -124  2005/11   [Not refereed] [Not invited]  
    In the present study, a new gas diffusion layer (GDL) with self water management is proposed. It is composed of double layered structure with a hydrophilic layer and a water transpiration layer. This GDL is intended to install outside the cathode catalyst layer. The GDL keeps water needed to humidify solid electrolyte layer by the hydrophilic layer and expels surplus water out of the GDL quickly by the water transpiration layer. In the present report, using simulated layers made of non-conducting hydrophilic inorganic sheet and quick-drying fabrics, the characteristics of the water management are studied experimentally. As the result, the inorganic sheet shows containing large amounts of water and the quick-drying fabrics shows high performance about transpiration. This result shows the effectiveness of the GDL.
  • PARK Sangkyun, KIKUTA Kazushige, TABE Yutaka, CHIKAHISA Takemi  Procee[d]ings of Thermal Engineering Conference  2005-  269  -270  2005/11   [Not refereed] [Not invited]  
    This study investigates drying condition for the case when a small fan is added to a free-breathing proton electrolyte membrane fuel cell (PEMFC) operating with dry H_2 and air. Polarization tests were conducted on PEMFCs at cell temperatures between 30 and 50℃. The result shows that the cell performance strongly depends on the cell temperature and the stoichiometric flow-rates of cathode gas. The cell performance increases as cell temperature decreases from 50 to 30℃. In the condition where the air flow-rate is quite large, internal resistance increases due to the progress of drying, but it is compensated by the decreased concentration over-potential. The maximum performance was obtained at a small air flow-rate in a narrow pass between dry-out and flooding. This indicates that the flow rate of the fan should be designed relatively small, if a cell design of avoiding flooding is possible.
  • OTSU Sho, CHIKAHISA Takemi, TABE Yutaka  2005-  (44)  138  -139  2005/10   [Not refereed] [Not invited]
  • KIYA Takuji, KIKUTA Kazushige, CHIKAHISA Takemi, HISHINUMA Yukio, MORIMITSU Kazuhiro  2005-  (3)  11  -12  2005/09   [Not refereed] [Not invited]  
    The paper investigates major parameters controlling the film deposition rate and the step coverage in batch type LPCVD devices. Based on the basic equations on the film deposition rate and by the selection of major parameters in the equations, p/u_0 parameter was estimated as the controlling parameter for both film deposition rate and step coverage at constant temperature condition. The result of the experiment agreed to the prediction in first order accuracy. The result indicates that the film deposition rate increases as the increase of the p/u_0 parameter, but it deteriorates step coverage. This implies the improvement of both deposition rate and step coverage is not accomplished by controlling pressure and flow.
  • NOHARA Naofumi, KIKUTA Kazusige, TABE Yutaka, CHIKAHISA Takemi  2005-  (3)  273  -274  2005/09   [Not refereed] [Not invited]  
    A fuel cell was made to allow direct observation of the phenomena in the cell, 2-D temperature measurement in cathode channels, and local current density measurements in anode side. The experimental results showed good correlation among direct view in the cell, temperature distribution and local current density. The experiment indicates transition phenomena of dry out and flooding depending on the flow and current conditions. The results suggests the possibility of different current density distribution for the same experimental conditions depending on the previous MEA condition history.
  • NAKAMIYA Hiromitsu, KIKUTA Kazusige, TABE Yutaka, CHIKAHISA Takemi, KAGAMI Fumio, YOSHIZAWA Koudai  2005-  (3)  275  -276  2005/09   [Not refereed] [Not invited]  
    In PEFC at low temperature, the freezing of produced water induces the extreme deterioration of cell performance. The characteristics of start-up below freezing in a wide variety of current densities was investigated and the cell impedance measurements was conducted to clarify the freezing phenomenon in PEFC. It was confirmed that the characteristics can be related to the amount of produced water and the rise in cell temperature by reaction. It was also showed that increase of reaction resistance, which was considered to be mainly due to increase gas transfer resistance, has much effect on freezing phenomenon.
  • CHIKAHISA Takemi, TABE Yutaka, KAWAGUCHI Hajime  Symposium on Environmental Engineering  2005-  (15)  311  -314  2005/07   [Not refereed] [Not invited]  
    Forest in Siberia plays important role for absorbing carbon dioxide. However, resent increase in forest fires, due to both human negligence and global warming, appears to cause significant damage on the forest. The present research tries to establish simulation model, which enables to predict forest fire effect over thousand years, and to evaluate the effects of forest fire on long term balance of CO_2 in Siberia. The result of the analysis shows that the major factor affecting on long-term forest area is the probability of fire extension and the number of fires in a year would not make apparent difference in the forest area due to feedback mechanism of fire sizes. The prediction was confirmed by the analysis of the remote sensing data. The paper shows the substantial danger of global warming effect on long-term forest area, whereas human negligence effect may be small.
  • IWASA Yoshitaka, TABE Yutaka, CHIKAHISA Takemi  Symposium on Environmental Engineering  2005-  (15)  454  -457  2005/07   [Not refereed] [Not invited]  
    This paper presents mapping method to show characteristics of cogeneration systems (CGS) for the reduction of carbon dioxide emission and economy. In this method, effects of CGS can be consolidated into rated reduction ratio, relative reduction ratio map, demand repetition map and weight map. By lapping these maps, it can be easy to evaluate compatibility with each building types and optimal installed capacity. Analyzed charts are useful to evaluate quantitative effects of CGS for various areas and price rates of electric/gas from average annual demand of electricity and heat.
  • CHIKAHISA Takemi, HISHINUMA Yukio, NANBA Toshiyuki  Transactions of the Japan Society of Mechanical Engineers. B  71-  (706)  1671  -1677  2005/06   [Not refereed] [Not invited]  
    This paper presents general characteristics of cogeneration system (CGS) for the reduction of carbon dioxide emission and economy compared to the conventional systems. Applying the method reported previously, the paper compares the CGS characteristics for types of cooling systems, building types, and locations in Japan. The result shows that absorption coolers are superior to electric coolers for the reduction of carbon dioxide, but the extent is not significant and it is reversed when the power plant efficiency becomes greater than 45%. The result also shows that when the systems and operation patterns are selected from economic points of view, CGS sometimes increase carbon dioxide more than the conventional systems without CGS. This tendency is most apparent in offices among different types of buildings. The CO_2 reduction rate with CGS is higher in northern cities with larger heat demand than southern cities in Japan, but the tendency is reversed in the case of stores, whose cooling demand is significantly high.
  • SASAKI Takafumi, SAITO Naoko, KIKUTA Kazushige, CHIKAHISA Takemi, HISHINUMA Yukio, MORIMITSU Kazuhiro  Transactions of the Japan Society of Mechanical Engineers. B  71-  (704)  1113  -1119  2005/04   [Not refereed] [Not invited]  
    The paper investigates the flow characteristics of reactant gas on the silicon wafers in a vertical LPCVD (Low-Pressure Chemical Vapor Deposition) reactor by the flow visualization and the numerical simulation. The observation was made in a model reactor in a very low-pressure condition, which makes the observation quite difficult because of tracer seeding. The CFD code FLUENT was used for the numerical simulation. The results of the visualization and the numerical simulation showed that the gas flow was quite viscous and it received large resistance force from the wafers and the supporting lodes. Regardless of the low-pressure condition, the flow can be treated as continuous system and can be simulated well by the CFD code based on Navier-Stokes equation. It shows that the most of the field appeared to be laminar. For the establishment of the uniform flow pattern, twin counter-flow nozzles were better than a single nozzle. The flow was free from stagnant flow or re-circulating flow so that it appeared to be suited for the prevention of particle formations.
  • KAWAGUCHI Hajime, TABE Yutaka, CHIKAHISA Takemi  21-  445  -448  2005/01   [Not refereed] [Not invited]
  • KIYA Takuji, SASAKI Tafumi, KIKUTA Kazushige, CHIKAHISA Takemi, HISHINUMA Yukio, HONGO Hidehisa, SAIDO Shuhei  Procee[d]ings of Thermal Engineering Conference  2004-  379  -380  2004/11   [Not refereed] [Not invited]  
    There is seldom the radiative prop erty of semiconductor wafers. It is important to know radiative properties of the wafer with a thin film for the accurate measurement of wafer temperature using the radiative thermometer and the estimation of the film thickness at in -situ. We measured the spectral normal emissivity of silicon wafers with various films without changing the condition of a thin film at 600℃ and 900℃. The result showed that radiation characteristics greatly differ by film kind and film thickness. It seems to be able to the estimation of the film thickness in the process by measuring the infrared spectrum at in-situ using this property.
  • FUJII Takeshi, CHIKAHISA Takemi, KANEKO Tomomi  2004-  (7)  199  -200  2004/09   [Not refereed] [Not invited]  
    Previous research indicated that the large NOx formation in diesel engines is due to the weak mixing intensity in the spray tip region, where the flow and turbulence structure is quite different from the continuous jet flames. The fact suggests that there is a possibility of reducing NOx from diesel engines by enhancing mixing intensity at the spray tip region to the level of continuous jet flame. As one of the attempts to make the velocity profile of diesel spray similar to the steady jet, an inert gas was injected prior to the fuel injection. With the pre-injection of inert gases, the flame apparently became less luminous, and NO concentration decreased compared to the case without pre-injection. This paper investigates the phenomena by sampling local gases to identify NO distribution in the flame at a moment.
  • IWASA Yoshitaka, CHIKAHISA Takemi  2004-  (3)  279  -280  2004/09   [Not refereed] [Not invited]  
    The paper analyzes CO_2 reduction effect and economic effect of cogeneration network system (CGNS) with considering grid limitation in electric quality. In CGNS, cogenerations are connected to the grid, being allowed to send excessive electricity to the grid. The system equips heat storage system and it is operated to contribute to reduce power-demand fluctuation; in this sense the system is cooperative to the grid. Analysis was made to compare the system with conventional cogeneration system without networking. A model area based on the actual service area in a city was selected and analyzed. The result indicates that the CO_2 reduction rate increases to 20% with the CGNS from 10% of the conventional cogeneration system. Additionally the power fluctuation in the grid can be also expected.
  • Nohara Naofumi, Ogawa Tomohiro, Kikuta Kazusige, Chikahisa Takemi  2004-  (3)  309  -310  2004/09   [Not refereed] [Not invited]  
    A fuel cell was made to allow direct observation of the phenomena and 2-D temperature measurement in cathode channels. The experimental results showed production and flow of liquid water in the cell, and there was good correlation between area covered by condensing water and cell voltage. The experimental results also showed that uniformity of the contact pressure strongly influenced the temperature distribution. Experimental setup was made to measure local current distribution, and it was recognized important to develop a method to compensate the effect of local resistance change due to inserting the measuring probes. The paper proposes an unique method to correct these effect to determine actual local currents.
  • PARK Sangkyun, KIKUTA Kazushige, CHIKAHISA Takemi, HISHINUMA Yukio  2004-  (3)  317  -318  2004/09   [Not refereed] [Not invited]  
    A free-breathing polymer electrolyte membrane fuel cell (PEMFC), whose oxidant is fed by natural convection from ambient air, is considered as one of small and portable power sources. In this study, the performance limit without gas humidification and the factors affecting performance of the free-breathing PEMFC were investigated. The cell voltage of normal PEMFC without gas humidification is approximate equivalent of that with gas humidification under low current density conditions, less than 0.1 A/cm^2. For the performance of the free-breathing PEMFC at the low current density, the contact resistance loss between separator and gas diffusion layer is dominant factor and the separator structure for decreasing the contact resistance is needed to improve performance.
  • CHIKAHISA Takemi, MATSUDA Yuji, KIKUTA Kazushige  Procee[d]ings of Thermal Engineering Conference  2003-  37  -38  2003/11   [Not refereed] [Not invited]  
    Quick mixing of fuel and air is one of the most essential factors to improve combustion and emissions in diesel engines. This paper investigates diffusion structure of sprays injected in engines using entropy analysis. The method allows the analysis of heterogeneity degree and diffusion intensity in pictures. Introducing laser sheet in an engine, cross-sectional images of the spray were obtained, and diffusion structures were compared for the swirl ratios. The result of the analysis shows that the swirl has an effect of changing fuel distribution but it does not have effect of increasing local diffusion coefficients, rather the medium scale diffusion intensity decreases by the swirl.
  • CHIKAHISA Takemi, IWASA Yoshitaka  Procee[d]ings of Thermal Engineering Conference  2003-  479  -482  2003/11   [Not refereed] [Not invited]  
    The paper analyzes the optimum cogeneration system (CGS) for the reduction of greenhouse gases. The paper compares the CGS characteristics for building types, system structure, power grid connection and operation patterns. The result shows that houses have the greatest potential to reduce greenhouse gases among variety types of buildings and power grid connection of houses is essential for the reduction. To realize the system the authors propose a concept of cooperative cogeneration network system, which equips heat storage and operates flexibly to flatten energy demand in the grid.
  • OGAWA Tomohiro, CHIKAHISA Takemi, KIKUTA Kazushige  Procee[d]ings of Thermal Engineering Conference  2003-  483  -484  2003/11   [Not refereed] [Not invited]  
    To keep high performance in Polymer Electrolyte Fuel Cell (PEFC). it is important to realize uniform current density and temperature distribution over the reaction area. Tow types of fuel cells were made to measure temperatures in the cell : a cell containing 12 thermocouples in a thin carbon plate between the two cells, and one allowing visual observation of temperature distribution in the cell. The experimental results showed that hot spots appeared in the flooding condition and the temperature tended to be uniform when the flooding was removed. The optical observation show3ed the increasing temperature from the inlet side of cathord gas, but the same temperature change was observed even when the flow direction was reversed. The reason is not clear at this moment.
  • KIKUTA Kazushige, ISHIKAWA Atsushi, SASAKI Takafumi, HISHINUMA Yukio, CHIKAHISA Takemi, MIYATA Toshimitsu, YAMAGUCHI Takatomo  2003-  (3)  9  -10  2003/08   [Not refereed] [Not invited]  
    There is seldom the data on the radiative property of semiconductor wafers. It is importance to know radiative properties of the wafter with a thin film for the accurate measurement of wafter temperature using the radiative thermometer and the estimation of the film thickness at in-situ. We measured the spectral normal emissivity of silicon wafters with various films without changing the condition of a thin film at 600℃ and 900℃. The result showed that radiation characteristics greatly differ by film kind and film thickness. It seems to be able to the estimation of the film thickness in the process by measuring the infrared spectrum at in-situ using this property.
  • CHIKAHISA Takemi, KANEKO Tomomi, FUJII Takesi, HISHINUMA Yukio  2003-  (3)  103  -104  2003/08   [Not refereed] [Not invited]  
    Similarities in the structure of spray flames suggest that higher fuel injection speeds would reduce NOx emission as the fuel residence time in the reaction zone would shorter. However, in diesel combustion it is commonly known that NOx emissions increase when the fuel injection velocity is increased. The authors have suggested from experimental and numerical analysis that the mixing time scale is significantly large at the spray tip region and existence of this unsteady structure is the major difference of the two flames. The purpose of this paper is to examine the effect of pre-injection of inert gas and air for the reduction of NOx : the aim was to eliminate the weak mixing zone at the tip and to create a fuel flow similar to a well developed jet structure. Experimental results showed NOx emissions decreased with his method, and the results provide clues to ways of reducing NOx in diesel spray flames.
  • SASAKI Takafumi, SAITO Naoko, KIKUTA Kazushige, HISHINUMA Yukio, CHIKAHISA Takemi, MIYATA Toshimitsu, YAMAGUCHI Takatomo  2003-  (6)  167  -168  2003/08   [Not refereed] [Not invited]  
    In the manufacturing process of the silicon semiconductor devices using the vertical low pressure CVD(Chemical Vapor Deposition) system, the film with nm order thickness is formed on the silicon wafer surface by the control of supply and chemical reaction of the raw material gas. It is very important to know how the supply gas flow and it diffuses on the water surface for the uniform thin film deposition in the low-pressure CVD. The purpose of this research is clarifying the flow of the reactant gas in the low pressure field by the flow visualization and numerical analysis. The result showed that the gas flow in the low pressure field becomes low-Reynolds-number flow and it behaves like the highly viscous fluid.
  • TAKAGI Yasuharu, HISHINUMA Yukio, CHIKAHISA Takemi  Transactions of the Japan Society of Mechanical Engineers. B  69-  (679)  705  -711  2003/03   [Not refereed] [Not invited]  
    The fuel cell is developed as a power source which is friendly with the environment. To thin the fuel cell is useful to compactness and cost reduction. So, in this study, the fuel cell with thin separators of 0.6mm thickness including microchannels of 0.2mm was fabricated and experimented. Experimental results showed that the hydrophobic treatment of separators is indispensable to drain easily water condensed in the microchannels. Besides, as water produced at the cathode increases with current densities and fills some microchannels and the electrode pores the pressure loss at the cathode gas increases and the performance of the fuel cell decreases due to the reduction of gas diffusivity. However if the humidity of cathode inlet gas is controlled to vaporize produced water corresponding to current densities the thin separator with microchannels of 0.2mm thick could be used without any influence on the performance.
  • TAKAGI Yasuharu, HISHINUMA Yukio, CHIKAHISA Takemi  Transactions of the Japan Society of Mechanical Engineers. Series B.  69-  (679)  705  -711  2003/03   [Not refereed] [Not invited]
  • CHIKAHISA Takemi  Energy and resources  24-  (2)  100  -104  2003/03   [Not refereed] [Not invited]
  • CHIKAHISA Takemi  42-  (173)  2003/03   [Not refereed] [Not invited]
  • CHIKAHISA Takemi, KAWAKAMI Kei, HISHINUMA Yukio  19-  139  -144  2003/01   [Not refereed] [Not invited]
  • ANZAI Hidenori, CHIKAHISA Takemi, HISHINUMA Yukio, KUDO Kazuhiko  19-  875  -880  2003/01   [Not refereed] [Not invited]
  • KANEKO Tomomi, CHIKAHISA Takemi, HISHINUMA Yukio  Transactions of the Japan Society of Mechanical Engineers. B  69-  (677)  213  -220  2003/01   [Not refereed] [Not invited]  
    In diesel combustion it is commonly known that NO_x emission increases when the fuel injection pressure is increased. In steady state jet flame, however, NO_x emission index (NO_x mass for unit mass of fuel) decreases with increased injection speed due to shorter residence time for reaction. Based on a simple simulation on the jet axis, the authors reported that a large part of the NO_x is formed at the tip of the jet flame shortly after injection and that the increased NO_x by higher fuel injection speed in engines is due to the development of this region, where the residence time is longer than the other part of the jet. The purpose of this paper is to confirm this prediction experimentally and numerically. Experiments were made to measure NO_x from a jet flame injected in a closed vessel with different injection speeds and periods. The results of the experiment and simulation both showed agreement with the predictions above. Discussion is made on the concept of reducing NO_x from diesel engines.

Awards & Honors

  • 2002   JSME Medal for Outstanding Paper
       japan
  • 2008   Thermal Engineering Award for Outstanding Academic Contribution
       japan
  • 2003   Engine Systems Award for Academic Achievement
       japan
  • 1993   SAE Oral Award
  • 1991   Suzuki Award for Excellent Research
       japan
  • 1987   JIME Young Engineers Award, The Japan Institution of Marine Engineering
       japan

Educational Activities

Teaching Experience

  • Inter-Graduate School Classes(General Subject):Natural and Applied Sciences
    開講年度 : 2017
    課程区分 : 修士課程
    開講学部 : 大学院共通科目
    キーワード : Energy, Renewable Energy, Nuclear Energy, Environment, Economy, Policy
  • Transport Phenomena
    開講年度 : 2017
    課程区分 : 修士課程
    開講学部 : 工学院
    キーワード : Transport Phenomena, Diffusion, Flow, Energy,
  • Transport Phenomena
    開講年度 : 2017
    課程区分 : 修士課程
    開講学部 : 工学院
    キーワード : Transport Phenomena, Diffusion, Flow, Energy,
  • Overview of Energy Technology and Policy
    開講年度 : 2017
    課程区分 : 修士課程
    開講学部 : 工学院
    キーワード : Energy, Renewable Energy, Nuclear Energy, Environment, Economy, Policy
  • Overview of Energy Technology and Policy
    開講年度 : 2017
    課程区分 : 修士課程
    開講学部 : 工学院
    キーワード : Energy, Renewable Energy, Nuclear Energy, Environment, Economy, Policy
  • Transport Phenomena
    開講年度 : 2017
    課程区分 : 博士後期課程
    開講学部 : 工学院
    キーワード : Transport Phenomena, Diffusion, Flow, Energy,
  • Transport Phenomena
    開講年度 : 2017
    課程区分 : 博士後期課程
    開講学部 : 工学院
    キーワード : Transport Phenomena, Diffusion, Flow, Energy,
  • Overview of Energy Technology and Policy
    開講年度 : 2017
    課程区分 : 博士後期課程
    開講学部 : 工学院
    キーワード : Energy, Renewable Energy, Nuclear Energy, Environment, Economy, Policy
  • Overview of Energy Technology and Policy
    開講年度 : 2017
    課程区分 : 博士後期課程
    開講学部 : 工学院
    キーワード : Energy, Renewable Energy, Nuclear Energy, Environment, Economy, Policy
  • Arts and Science Courses in English 1
    開講年度 : 2017
    課程区分 : 学士課程
    開講学部 : 国際本部
    キーワード : Energy, Renewable Energy, Nuclear Energy, Environment, Economy, Policy
  • Thermodynamics
    開講年度 : 2017
    課程区分 : 学士課程
    開講学部 : 工学部
    キーワード : 熱力学
  • Thermodynamics Ⅰ
    開講年度 : 2017
    課程区分 : 学士課程
    開講学部 : 工学部
    キーワード : エネルギー保存則、理想気体、エントロピー、有効エネルギー、化学平衡、統計熱力
  • Exercise on Thermo and Fluid Dynamics Ⅰ
    開講年度 : 2017
    課程区分 : 学士課程
    開講学部 : 工学部
    キーワード : エネルギー保存則、理想気体、エントロピー、有効エネルギー、化学平衡、統計熱力
  • Energy and Environment Engineering
    開講年度 : 2017
    課程区分 : 学士課程
    開講学部 : 工学部
    キーワード : 環境、エネルギー、地球温暖化、原子力発電、燃料電池、高効率発電、風力、エンジン、燃焼
  • The World of Science and Technology
    開講年度 : 2017
    課程区分 : 学士課程
    開講学部 : 全学教育
    キーワード : 地球環境問題、福島の原発事故の教訓と原子力発電、エネルギーセキュリティー、化石燃料の枯渇と高騰、巨大技術と技術者倫理、政治の役割、経済活動とエネルギー、報道の倫理、風評被害、ゼロエミッション社会

Campus Position History

  • 2014年4月1日 
    2016年3月31日 
    教育研究評議会評議員
  • 2014年4月1日 
    2016年3月31日 
    大学院工学院副学院長
  • 2014年4月1日 
    2016年3月31日 
    大学院工学研究院副研究院長

Position History

  • 2014年4月1日 
    2016年3月31日 
    教育研究評議会評議員
  • 2014年4月1日 
    2016年3月31日 
    大学院工学院副学院長
  • 2014年4月1日 
    2016年3月31日 
    大学院工学研究院副研究院長


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