The Experts below are selected from a list of 222 Experts worldwide ranked by ideXlab platform
Brice Tremeac - One of the best experts on this subject based on the ideXlab platform.
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life cycle analysis of 4 5 mw and 250 w wind turbines
Renewable & Sustainable Energy Reviews, 2009Co-Authors: Brice Tremeac, F MeunierAbstract:Electric generation by wind turbine is growing very strongly. However, the Environmental impact of wind energy is still a matter of controversy. This paper uses Life Cycle Assessment, comparing two systems: a 4.5 MW and a 250 W wind turbines, to evaluate their Environmental impact. All stages of life cycle (manufacturing, transports, installation, maintenance, disassembly and disposal) have been analysed and sensitivity tests have been performed. According to the indexes (PEPBT (primary energy pay back time), CO2 emissions, etc.), the results show that wind energy is an excellent Environmental Solution provided first, the turbines are high efficiency ones and implemented on sites where the wind resource is good, second, components transportation should not spend too much energy and, third, recycling during decommissioning should be performed correctly. This study proves that wind energy should become one of the best ways to mitigate climate change and to provide electricity in rural zones not connected to the grid.
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Life cycle analysis of 4.5 MW and 250 W wind turbines
Renewable and Sustainable Energy Reviews, 2009Co-Authors: Brice Tremeac, Frédéric C. MeunierAbstract:Electric generation by wind turbine is growing very strongly. However, the Environmental impact of wind energy is still a matter of controversy. This paper uses Life Cycle Assessment, comparing two systems: a 4.5 MW and a 250 W wind turbines, to evaluate their Environmental impact. All stages of life cycle (manufacturing, transports, installation, maintenance, disassembly and disposal) have been analysed and sensitivity tests have been performed. According to the indexes (PEPBT (primary energy pay back time), CO2emissions, etc.), the results show that wind energy is an excellent Environmental Solution provided first, the turbines are high efficiency ones and implemented on sites where the wind resource is good, second, components transportation should not spend too much energy and, third, recycling during decommissioning should be performed correctly. This study proves that wind energy should become one of the best ways to mitigate climate change and to provide electricity in rural zones not connected to the grid. © 2009 Elsevier Ltd. All rights reserved.
Johan R C Van Der Maarel - One of the best experts on this subject based on the ideXlab platform.
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a nanofluidic device for single molecule studies with in situ control of Environmental Solution conditions
Lab on a Chip, 2013Co-Authors: Ce Zhang, Kai Jiang, Patrick S Doyle, Johan R C Van Der MaarelAbstract:We report an approach to study the in situ conformational response of single biomolecules such as DNA to a change in Environmental Solution conditions. These conditions are, for example, the composition of the buffer or the presence of protein. For this purpose, we designed and fabricated a nanofluidic device featuring two arrays of parallel nanochannels in a perpendicular configuration. The cross-sections of the channels are rectangular with a diameter down to 175 nm. These lab-on-a-chip devices were made of polydimethylsiloxane (PDMS) cast on a high quality master stamp, obtained by proton beam writing and UV lithography. Biomolecules can be inserted into the device through the array of channels in one direction, whereas the buffer can be exchanged through the intersecting array of channels in the other direction. A buffer exchange time inside the grid of nanochannels of less than one second was measured by monitoring the conductivity of salt Solutions. The exchange time of a protein was typically a few seconds, as determined by imaging the influx of fluorescence labelled protamine. We demonstrate the functionality of the device by investigating the compaction of DNA by protamine and the unpacking of pre-compacted DNA through an increase in the concentration of salt.
Frédéric C. Meunier - One of the best experts on this subject based on the ideXlab platform.
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Life cycle analysis of 4.5 MW and 250 W wind turbines
Renewable and Sustainable Energy Reviews, 2009Co-Authors: Brice Tremeac, Frédéric C. MeunierAbstract:Electric generation by wind turbine is growing very strongly. However, the Environmental impact of wind energy is still a matter of controversy. This paper uses Life Cycle Assessment, comparing two systems: a 4.5 MW and a 250 W wind turbines, to evaluate their Environmental impact. All stages of life cycle (manufacturing, transports, installation, maintenance, disassembly and disposal) have been analysed and sensitivity tests have been performed. According to the indexes (PEPBT (primary energy pay back time), CO2emissions, etc.), the results show that wind energy is an excellent Environmental Solution provided first, the turbines are high efficiency ones and implemented on sites where the wind resource is good, second, components transportation should not spend too much energy and, third, recycling during decommissioning should be performed correctly. This study proves that wind energy should become one of the best ways to mitigate climate change and to provide electricity in rural zones not connected to the grid. © 2009 Elsevier Ltd. All rights reserved.
F Meunier - One of the best experts on this subject based on the ideXlab platform.
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life cycle analysis of 4 5 mw and 250 w wind turbines
Renewable & Sustainable Energy Reviews, 2009Co-Authors: Brice Tremeac, F MeunierAbstract:Electric generation by wind turbine is growing very strongly. However, the Environmental impact of wind energy is still a matter of controversy. This paper uses Life Cycle Assessment, comparing two systems: a 4.5 MW and a 250 W wind turbines, to evaluate their Environmental impact. All stages of life cycle (manufacturing, transports, installation, maintenance, disassembly and disposal) have been analysed and sensitivity tests have been performed. According to the indexes (PEPBT (primary energy pay back time), CO2 emissions, etc.), the results show that wind energy is an excellent Environmental Solution provided first, the turbines are high efficiency ones and implemented on sites where the wind resource is good, second, components transportation should not spend too much energy and, third, recycling during decommissioning should be performed correctly. This study proves that wind energy should become one of the best ways to mitigate climate change and to provide electricity in rural zones not connected to the grid.
Philip Hall - One of the best experts on this subject based on the ideXlab platform.
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From waste plastics to industrial raw materials: A life cycle assessment of mechanical plastic recycling practice based on a real-world case study
Science of the Total Environment, 2017Co-Authors: Fu Gu, Peter A. Summers, Jianfeng Guo, Wujie Zhang, Philip HallAbstract:Mechanical recycling of waste plastics is an Environmental Solution to the problem of waste plastic disposal, and has already become a common practice in industry. However, limited information can be found on either the industralised plastic recycling or the recycled materials, despite the use of recycled plastics has already extended to automobile production. This study investigates the life cycle Environmental impacts of mechanical plastic recycling practice of a plastic recycling company in China. Waste plastics from various sources, such as agricultural wastes, plastic product manufacturers, collected solid plastic wastes and parts dismantled from waste electric and electronic equipments, are processed in three routes with products end up in different markets. The results of life cycle assessments show that the extrusion process has the largest Environmental impacts, followed by the use of fillers and additives. Compared to production of virgin plastics and composites, the mechanical recycling is proved to be a superior alternative in most Environmental aspects. Substituting virgin plastic composites with recycled plastic composites has achieved the highest Environmental benefits, as virgin composite production has an impact almost 4 times higher that of the recycled composite production in each ReCiPe endpoint damage factor. Sensitivity analysis shows that the coverage of collecting network contribute affect little to overall Environmental impact, and centralisation plays an important role in reducing overall Environmental impacts. Among the fillers and additives, impact modifiers account for the most significant contributions to the Environmental impacts of recycled composites. This study provides necessary information about the existing industrialised plastic recycling practice, and recommendations are given. Research implications are presented with the purpose to achieve higher substitution rate and lower Environmental impact.