The Experts below are selected from a list of 18786 Experts worldwide ranked by ideXlab platform
U. Camdali - One of the best experts on this subject based on the ideXlab platform.
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The Turkish Transportation Sector and Its Thermodynamic Analysis
Energy Sources Part B: Economics Planning and Policy, 2015Co-Authors: U. CamdaliAbstract:Turkey is a typical example for emerging energy markets of the world. Its energy consumption is also increasing in parallel to its development. The Turkish Transportation Sector is based on railway, marine, airway, and highway subSectors. The main energy types of thes Sectors are hard coal, lignite, oil, and electricity for railways, oil for seaways and airways, and oil and natural gas for highways. In this study, the construction of the Turkish Transportation Sector is introduced. Then, how to find energy and exergy efficiencies of energy used in this Sector and studies on this issue are explored. In this context, this study is intended to contribute to the analysis of this Sector.
K. A. Subramanian - One of the best experts on this subject based on the ideXlab platform.
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Sustainable development of road Transportation Sector using hydrogen energy system
Renewable and Sustainable Energy Reviews, 2015Co-Authors: Bheru Lal Salvi, K. A. SubramanianAbstract:This study reviews the main problems of high air pollution levels at many urban cities and sustainability of the Transportation fuels, and addressing their control measures using hydrogen energy system. In the world, majority of the Transportation vehicle fleets consume the fuels derived from fossil resources. The development of economy activities indicate the increase in Transportation services resulting in increased fuel consumption and high emissions, especially unregulated emission carbon dioxide, which is a greenhouse gas (GHG). Therefore, utilization of hydrogen as fuel in vehicle fleet would improve energy security and reduce the GHG emission. A feasibility of hydrogen energy system, which includes its resources, production technologies, storage, fuel Transportation, dispensing and utilization, is analysed for the road Transportation Sector. In addition to this, the study highlights the technical issues and its control strategy for addressing the problems of the Transportation system using the hydrogen. Moreover, hydrogen is the cleanest fuel, especially when coupled with renewable energy sources. The road Transportation Sector with hydrogen energy system would give the desirable results including high energy efficiency and zero carbon based emission (CO, CO2, HC, PM) resulting in strengthening of sustainability of the system. The Governments of many countries have made ambitious policies and provide strong financial support to research organizations including universities and institutions for development of hydrogen energy system. Many companies express strong interest in the commercialization of hydrogen fuelled vehicles either internal combustion engines based, fuel cell based or hybrid technology.
Caroline J. Rodier - One of the best experts on this subject based on the ideXlab platform.
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Achieving reductions in greenhouse gases in the US road Transportation Sector
Energy Policy, 2014Co-Authors: Andrew I Kay, Robert B. Noland, Caroline J. RodierAbstract:It is well established that GHG emissions must be reduced 50 to 80% by 2050 in order to limit global temperature increase to 2°C. Achieving reductions of this magnitude in the Transportation Sector is a challenge and requires a multitude of policies and technology options. The research presented here analyzes three scenarios: changes in the perceived price of travel, land use intensification, and increases in transit. Elasticity estimates are derived using an activity-based travel model for the state of California and broadly representative of the US. The VISION model is used to forecast changes in technology and fuel options that are currently forecast to occur in the US for the period 2000–2040, providing a life-cycle GHG forecast for the road Transportation Sector. Results suggest that aggressive policy action is required, especially pricing policies, but also more on the technology side, especially increases in the carbon efficiency of medium and heavy-duty vehicles.
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Achieving Reductions in Greenhouse Gases in the U.S. Road Transportation Sector
2014Co-Authors: Andrew I Kay, Robert B. Noland, Caroline J. RodierAbstract:It is well established that greenhouse gases (GHG) emissions must be reduced by 50 to 80% by 2050 in order to limit global temperature increase to 2°C. Achieving reductions of this magnitude in the Transportation Sector is a challenge and requires a multitude of policies and technology options. The research presented here analyzes three scenarios: changes in the perceived price of travel, land use intensification, and increases in transit. Elasticity estimates are derived using an activity-based travel model for the state of California and broadly representative of the United States (US). The VISION model is used to forecast changes in technology and fuel options that are currently forecast to occur in the US, providing a life-cycle GHG forecast for the road Transportation Sector. Results suggest that aggressive policy action is needed, especially pricing policies, but also more on the technology side. Medium and heavy-duty vehicles are in particular need of additional fuel or technology-based GHG reductions.
Nicholas W Delgass - One of the best experts on this subject based on the ideXlab platform.
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sustainable fuel for the Transportation Sector
Proceedings of the National Academy of Sciences of the United States of America, 2007Co-Authors: Rakesh Agrawal, Navneet R Singh, F H Ribeiro, Nicholas W DelgassAbstract:Abstract A hybrid hydrogen-carbon (H2CAR) process for the production of liquid hydrocarbon fuels is proposed wherein biomass is the carbon source and hydrogen is supplied from carbon-free energy. To implement this concept, a process has been designed to co-feed a biomass gasifier with H2 and CO2 recycled from the H2-CO to liquid conversion reactor. Modeling of this biomass to liquids process has identified several major advantages of the H2CAR process. (i) The land area needed to grow the biomass is <40% of that needed by other routes that solely use biomass to support the entire Transportation Sector. (ii) Whereas the literature estimates known processes to be able to produce ≈30% of the United States Transportation fuel from the annual biomass of 1.366 billion tons, the H2CAR process shows the potential to supply the entire United States Transportation Sector from that quantity of biomass. (iii) The synthesized liquid provides H2 storage in an open loop system. (iv) Reduction to practice of the H2CAR route has the potential to provide the Transportation Sector for the foreseeable future, using the existing infrastructure. The rationale of using H2 in the H2CAR process is explained by the significantly higher annualized average solar energy conversion efficiency for hydrogen generation versus that for biomass growth. For coal to liquids, the advantage of H2CAR is that there is no additional CO2 release to the atmosphere due to the replacement of petroleum with coal, thus eliminating the need to sequester CO2. biofuels coal hydrogen oil
Xingle Long - One of the best experts on this subject based on the ideXlab platform.
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CO2 emission in Transportation Sector across 51 countries along the Belt and Road from 2000 to 2014
Journal of Cleaner Production, 2020Co-Authors: Chao Wang, Jacob Wood, Yongjie Wang, Xinrui Geng, Xingle LongAbstract:Abstract The Transportation Sector is a key economic Sector and an important source of CO2 emissions. Due to these environmental implications and a desire to reduce emission levels, the number of empirical analyses on the Transportation Sector have increased significantly in recent times. Given this pretext, our study examines the heterogeneity and spatial autocorrelation CO2 emissions of the Transportation Sector for 51 belt and road economies from 2000 to 2014. As part of analysis, we examine the heterogeneity of CO2 emissions in the Transportation Sector through the use of the Theil index and semi-variogram analysis. Furthermore, our study also analyzed the global and local spatial autocorrelation of transport Sector CO2 emissions using the Moran index for participating countries. From the analysis, this study found that the Transportation CO2 emission intensity of Central and Western Asia and North Africa is significantly higher than that of other regions along the belt and road, and there is a strong spatial correlation in Southeast Asian countries. Our research provides a key reference point for governments by proposing carbon-reduction policies and the promotion of greener developmental initiatives within the Transportation Sector.
