0000000000390367

AUTHOR

Akira Nishimura

showing 5 related works from this author

Impact of operation condition on temperature distribution in single cell of polymer electrolyte fuel cell operated at higher temperature than usual

2016

For improving performance of the stationary Polymer Electrolyte Fuel Cell (PEFC) system, the cell operating temperature up to 90°C will be preferred in Japan during the period from 2020 to 2030. To understand the operation of the PEFC system under relatively high temperature conditions, detail heat and mass transfer analysis is required. The main focus of this study is to analyze the PEFC performance under operational conditions, such as initial operational temperature of cell (Tini), relative humidity of supply gas, and the cathode gas type, temperature distribution in a cell of PEFC (using Nafion membrane) under relatively higher operating temperature conditions. The in-plane temperature …

chemistry.chemical_classificationMaterials scienceDistribution (number theory)020209 energythermographMechanical engineeringpower generation performance02 engineering and technologyElectrolytePolymerpolymer electrolyte fuel cell (pefc)higher temperature operation than usual021001 nanoscience & nanotechnologyimpact of operation conditiontemperature distributionchemistry0202 electrical engineering electronic engineering information engineeringTJ1-1570Fuel cellsMechanical engineering and machineryComposite material0210 nano-technologyMechanical Engineering Journal
researchProduct

Heat and mass transfer analysis in single cell of PEFC using different PEM and GDL at higher temperature

2019

Abstract According to the H2 and fuel cell road map in Japan, the target operating temperature of polymer electrolyte fuel cell (PEFC) should be 90 °C from 2020 to 2025. In this study, the impact of polymer electrolyte membrane (PEM) and gas diffusion layer (GDL)'s thickness on heat and mass transfer characteristics as well as power generation performance of PEFC is investigated at operating temperature of 90 °C. The in-plane temperature distributions on anode and cathode separator are also measured using thermograph. As a result, it is observed that the increase in power from 1 W to 5 W at the current density of 0.80 A/cm2 as well as even temperature distribution within 1 °C can be obtaine…

Materials scienceRenewable Energy Sustainability and the EnvironmentEnergy Engineering and Power Technology02 engineering and technologyElectrolyte010402 general chemistry021001 nanoscience & nanotechnologyCondensed Matter Physics01 natural sciencesCathode0104 chemical sciencesAnodelaw.inventionFuel TechnologyElectricity generationOperating temperaturelawMass transferComposite material0210 nano-technologyCurrent densitySeparator (electricity)International Journal of Hydrogen Energy
researchProduct

Impact of Separator Thickness on Temperature Distribution in Single Cell of Polymer Electrolyte Fuel Cell Operated at Higher Temperature of 90 °C and…

2022

The New Energy and Industry Technology Development Organization (NEDO) road map (Japan, 2017) has proposed that a polymer electrolyte fuel cell (PEFC) system, which operates at a temperature of 90 °C and 100 °C, be applied for stationary and mobility usage, respectively. This study suggests using a thin polymer electrolyte membrane (PEM) and a thin gas diffusion layer (GDL), at the same time, to achieve better power-generation performance, at a higher temperature than usual. The focus of this paper is to clarify the effect of separator thickness on the distribution of temperature at the reaction surface (Treact), with the relative humidity (RH) of the supply gasses and initial operation tem…

polymer electrolyte fuel cell (PEFC); heat-transfer model; separator thickness; temperature distribution; high temperature operation of PEFCControl and OptimizationRenewable Energy Sustainability and the EnvironmentVDP::Matematikk og Naturvitenskap: 400::Geofag: 450Energy Engineering and Power TechnologyBuilding and ConstructionElectrical and Electronic EngineeringEngineering (miscellaneous)Energy (miscellaneous)
researchProduct

Impact analysis of MPL and PEM thickness on temperature distribution within PEFC operating at relatively higher temperature

2020

Abstract In Japan, it is recommended to operate Polymer Electrolyte Fuel Cell (PEFC) at temperature around 90 °C for stationary applications during the period from 2020 to 2025. However, the present PEFC is using Nafion polymer electrolyte membrane (PEM) and operated within the temperature range from 60 °C to 80 °C. It is important to understand the temperature distribution in a cell of PEFC for improving the performance and to realize the long life span. This study focuses on use of micro porous layer (MPL), which can promote the moisture transfer in order to control the temperature distribution. The aim of this study is to analyze the impact of MPL on temperature distribution at reaction …

ImaginationMaterials scienceChemical substance020209 energymedia_common.quotation_subject02 engineering and technologyElectrolyteIndustrial and Manufacturing Engineeringchemistry.chemical_compound020401 chemical engineeringNafion0202 electrical engineering electronic engineering information engineeringRelative humidity0204 chemical engineeringElectrical and Electronic EngineeringComposite materialCivil and Structural Engineeringmedia_commonMechanical EngineeringBuilding and ConstructionAtmospheric temperature rangePollutionVolumetric flow rateGeneral EnergychemistryScience technology and societyEnergy
researchProduct

Impact of Building Layouts on Wind Turbine Power Output in the Built Environment: A Case Study of Tsu City

2014

In city planning, it is important to consider the future growth of renewable energy systems in the built environment. Wind speed analysis in the built environment is very important for analysing the wind turbine performance installed in the built environment. In this work, building topologies / layouts in Tsu city are considered for investing the wind speed distributions and directions. Wind speed profile in the built environment are developed by using CFD-ACE+. This work focusses on the analysis of the wind speed directions and distribution characteristics for finding out the proper location of the wind turbines in the built environment. The wind speed profiles and their directions and win…

EngineeringWind powerbusiness.industryNozzleWind directionCivil engineeringTurbineGeneralLiterature_MISCELLANEOUSWind speedOffshore wind powerGeneral EnergyComputerApplications_MISCELLANEOUSSmart citybusinessBuilt environmentMarine engineeringJournal of the Japan Institute of Energy
researchProduct