Search results for "Higher temperature"

showing 2 items of 2 documents

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
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Modelling the impact of higher temperature on the phytoplankton of a boreal lake

2014

We linked the models PROTECH and MyLake to test potential impacts of climate-changeinduced warming on the phytoplankton community of Pyhäjärvi, a lake in southwest Finland. First, we calibrated the models for the present conditions, which revealed an apparent high significance of internal nutrient loading for Pyhäjärvi. We then estimated the effect of two climate change scenarios on lake water temperatures and ice cover duration with MyLake. Finally, we used those outputs to drive PROTECH to predict the resultant phytoplankton community. It was evident that cyanobacteria will grow significantly better in warmer water, especially in the summer. Even if phosphorus and nitrogen loads to the la…

Higher temperatureBiology and Microbiologyboreal lakephytoplanktonEcology and Environment
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