Transportation Systems, Renewable Fuels, and Energy Efficiency

2018 ◽  
pp. 185-214
Author(s):  
Mats Larsson
Keyword(s):  
Energy Efficiency ◽  
Transportation Systems ◽  
Renewable Fuels

Energy Efficiency of Arctic Transportation Systems

1983 ◽  
Vol 109 (4) ◽  
pp. 236-246
Author(s):  
Derek M. Sherman ◽  
Edwin M. Rhoads
Keyword(s):  
Energy Efficiency ◽  
Transportation Systems

scholarly journals Efficiency and Environmental Metrics of Algal Fuel

2015 ◽  
Vol 4 (2) ◽  
pp. 41
Author(s):  
Douglas Auld
Keyword(s):  
Energy Efficiency ◽  
Greenhouse Gas ◽  
Commercial Production ◽  
Renewable Fuels ◽  
Basic Model ◽  
Ghg Reduction ◽  
Near Term ◽  
Reduction Effectiveness

<p class="emsd"><span lang="EN-GB">Energy efficiency, greenhouse gas (GHG) reduction effectiveness and cost are the major characteristics that determine the commercial production, consumption and potential subsidization of non-fossil, renewable fuels. This paper sets out a basic model by which the characteristics of algal fuel can be examined and in doing so, conclusions are reached regarding  the likelihood of algal fuel becoming a major biofuel in the immediate and near-term future and the potential subsidy entitlement of the fuel.</span></p>

scholarly journals Railway Vehicle Energy Efficiency as a Key Factor in Creating Sustainable Transportation Systems

Energies ◽  
2021 ◽  
Vol 14 (16) ◽  
pp. 5211
Author(s):  
Małgorzata Ćwil ◽  
Witold Bartnik ◽  
Sebastian Jarzębowski
Keyword(s):  
Energy Efficiency ◽  
Energy Consumption ◽  
Life Cycle Cost ◽  
Real Life ◽  
Transportation Systems ◽  
Sustainable Transportation ◽  
Rolling Stock ◽  
Railway Vehicle ◽  
Railway Transportation ◽  
Significant Difference

Railway transit forms the backbone of sustainable transportation systems, which are necessary to limit the effects of global warming. In this paper, the authors seek to determine whether there is a statistically significant difference in energy consumption between distinct railway vehicle types. Firstly, the energy consumption measurement methods in the railway transportation sector are described and compared to each other in respect to precision and cost. Secondly, the use of energy consumption as a criterion in rolling stock tenders with the associated norm is analysed, particularly with regard to the life-cycle cost of railway vehicles. In the next part real life data on energy consumption of six distinct passenger electrical railway vehicle types is presented and analysed in order to compare the efficiency of different types of rolling stock. The differences in energy efficiency between rolling stock types may be used to improve the procurement process ensuring train operating companies obtain less energy-consuming vehicles.

Energy Efficiency and Environmental Sustainability

2017 ◽  
Vol 2 (1) ◽  
Author(s):  
Fariborz Ghadar
Keyword(s):  
Energy Efficiency ◽  
Environmental Sustainability ◽  
Energy Demand ◽  
Renewable Fuels ◽  
Joint Effort ◽  
Global Energy ◽  
The World ◽  
Over Time

Over time, the world has insatiably required more energy, and companies have continuously increased production to meet that need. Now that the environmental sustainability of this pattern has been called into question, a joint effort by all stakeholders is necessary to address carbon concerns in the context of an ever-increasing global energy demand. The development of nonfossil, renewable fuels is an important aspect of the sustainability solution, but right now, the most critical concern must be efficiency.

ENERGY EFFICIENCY OF OPERATING MODES OF MAIN OIL PIPELINES WITH PERIODICAL PARTIAL OIL DUMPING

2018 ◽  
pp. 151-160
Author(s):  
Y. V. Yakymiv ◽  
O. M. Bortnyak
Keyword(s):  
Energy Efficiency ◽  
Transportation Systems ◽  
Operating Conditions ◽  
Oil Pipeline ◽  
Operating Modes ◽  
Oil Transportation ◽  
Pumping Stations ◽  
Oil Pipelines ◽  
Oil Flow ◽  
The Impact

Modern oil transportation systems are characterized by a complex hydraulic structure and geometric configuration, and often require the need for a permanent or periodic pumping or dumping part of the oil flow. The implementation of such transportation technology necessarily leads to changes in the operating conditions of oil pipelines and in accordance with the need to regulate the operation of oil pumping stations. Consequently, determining the patterns of the impact of the process of dumping the part of the oil on the energy parameters of the operation of oil transportation systems is an extremely important task.The influence of periodic dumping the part of oil on the energy efficiency of the operation of main oil pipelines was studied. The impact of volume of discharges on the consumption of power on pumping oil in the system of the main oil pipeline was analyzed. It has been found that with the increase the volume of discharges, the specific consumption of electricity for oil pumping decreases.Based on the carried research, the recommendations on the selection of reliable, safe and optimal pumping modes in terms of cost of electricity for the operation of oil pipelines "Druzhba" in the direction of Mozyr - Brody - Tukholsky pass with periodical partial oil dumping on LPDS "Brody".

scholarly journals Efficiency Comparisons of Secondary Biofuels

2015 ◽  
Vol 1 ◽  
pp. 70-89 ◽  
Author(s):  
Connor Day ◽  
Yin-Chen Tseng ◽  
Reuben Puyol ◽  
Jessica Nissan
Keyword(s):  
Energy Source ◽  
Energy Efficiency ◽  
Energy Production ◽  
High Energy ◽  
Transportation Systems ◽  
Third Generation ◽  
Input Energy ◽  
Data Types ◽  
Transportation Energy ◽  
Efficiency Data

Biofuels are essential for the energy production of the future. This report is a meta-study of the efficiencies of first, second and third generation secondary biofuels used for transportation purposes. We present and compare data from several studies concerning the efficiency of converting raw biomass info biofuels. We also compare this data to the efficiencies of hydrogen and solar power transportation systems. The efficiency data was presented as percentages from ratios of different data types, primarily exergy and energy efficiency ratios, which are defined for each study throughout the report. The highest efficiency percentages were displayed by second-generation wood knot rejects that did not require pretreatment input energy and resulted in high-energy ethanol output. The lowest efficiency percentages were from quasi-solar thermophotovoltaic radiator technology, heightening the reputation of biofuels as the efficient, renewable transportation energy source of tomorrow.

scholarly journals Comparison of Energy Efficiency Indicators of Road Transportation for Modeling Environmental Sustainability in “Green” Circular Industry

2020 ◽  
Vol 12 (7) ◽  
pp. 2740 ◽  
Author(s):  
Teijo Palander ◽  
Hanna Haavikko ◽  
Emma Kortelainen ◽  
Kalle Kärhä
Keyword(s):  
Energy Efficiency ◽  
Environmental Sustainability ◽  
Fossil Fuels ◽  
Ecosystem Model ◽  
Transportation Systems ◽  
Positive Energy ◽  
Road Transportation ◽  
Novel Technologies ◽  
Carbon Neutral ◽  
Efficiency Indicators

The Finnish forest industry is committed to applying novel technologies for increasing carbon-neutral development and environmental sustainability in “green” circular industry. This study compares the energy efficiency indicators of road freight transportation. Additionally, effects of four mass limits of vehicle combinations are analyzed after a three-year adaptation process that took place in a wood procurement region of 100% renewable resources. The wood-based energy efficiency model (load’s wood energy/fossil transport energy) was the most accurate and precise measure as the development indicator. The indicator showed that the transportation systems (60, 64, 68, and 76 t) and (64, 68, and 76 t) were carbon negative (122, 133, 144, and 108) (142, 147, and 133) in 2014 and 2016, respectively. The numbers reveal positive energy ratio of renewable wood and fossil fuels. In comparison to 60 t, the use of 68 t vehicles increased energy efficiency most effectively in the systems, by 18.0% and 20.5%, respectively. The indicator robustly revealed the energy efficiency of a partial system in the smaller supply region, which depended on the region’s transportation conditions. This novel knowledge can be applied for advancing the adaptation toward carbon-neutral supply networks. There is also the development potential of an industrial ecosystem model for optimizing the environmental sustainability of “green” circular industry.

Critical Embedded Software

2019 ◽  
pp. 3-6
Author(s):  
Pierre-Loïc Garoche
Keyword(s):  
Energy Efficiency ◽  
Medical Devices ◽  
Aerospace Industry ◽  
Embedded Software ◽  
Transportation Systems ◽  
Space Systems ◽  
System Complexity ◽  
Railway Systems ◽  
Current State ◽  
Complexity Increase

This chapter looks at the current state of physical systems controlled by an onboard computer. Typically this covers transportation systems such as cars, aircraft, railway systems, space systems, or even medical devices, all of them either for the expected harmfulness for people, or for the huge cost associated with their failure. The chapter shows how the increase of computer use in those systems has led to huge benefits, but also an exponential growth in complexity. Furthermore, the drawback of this massive introduction of computers to control systems is the lack of predictability for both computer and software. This chapter shows how the aerospace industry, and more generally critical embedded systems industries, is now facing a huge increase in the software size in their systems. This in turn creates a greater system complexity increase because of safety or performance objectives. Moreover, this complexity leads to the need to integrate even more advanced algorithms to sustain autonomy and energy efficiency.

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