Papers by Keyword: Transportation

Abstract: At present, with inside the case of India, weather alternate is an issue of great concern. Energy is a component that determines the country's structure. A worldwide trouble is the imbalance among the usage of electricity and the generation of electricity. All countries presently depend upon fossil fuels for electricity production, and those fossil fuels aren't sustainable sources. Not simplest is greenhouse gas emissions however additionally the worst gasoline economy. Within this subject matter and out of mind, there are some of tactics which have emerged with inside the car industry to deal with this trouble together with Battery Electric Vehicles or extra with inside the industrial scale, Electric Cell Vehicles and Hybrid Electric Vehicles. A fuel cell is an equipment that operates using chemical reactions. Fuel cells use reactants, that are innocent to the surroundings and bring water as a manufactured from chemical reactions. Since hydrogen is a clean fuel which can be used in the internal combustion (IC) engine at the place of diesel fuels in transportation sector (Automobiles).Presently it’s the hydrogen is commercially produced by commercial electricity which sotly so the production cost of H2 is high. But it can be produced by solar PV and other low cost centricity production options by which the production cost of H2 can be reduced. The H2 fuel is clean and green and it can help to reduce the environmental pollution and enhance the sustainability.

Abstract: Nowadays, the application of hydrogen as an energy carrier has become important as a result of decreasing availability of oil and gas fields as well as increasing demands on sustainable energy carriers. Providing an adequate hydrogen transportation infrastructure is a key step. During transportation, many different materials can interact with hydrogen, but in order to transport high quantities of hydrogen at higher pressures, the use of steels is preferred. However, hydrogen has many negative effects on steel, thus extensive research needs to be performed before hydrogen can be transported safely. Solubility of hydrogen in steel depends on the temperature, pressure, and the crystal structure of steel, so welding is also an important subject. Since most of the steel structures are welded, welded joints should also be examined for exposure to hydrogen. In the case of welding, a number of factors can decrease the hydrogen resistance of the welded joint and thus increase the risk of degradation by hydrogen. In this research work, hydrogen damage, and hydrogen traps will be reviewed. Possible ways to reduce the diffusible hydrogen content will also be summarized, as well as aspects of the filler material and shielding gas selection. In addition, an overview will be provided on welding technology aspects of carbon steels related to hydrogen, such as heat input, preheating, t_8/5 cooling time, heat-affected zone size, number of weld runs, effect of discontinuities, etc. In general, filler material with the lowest possible diffusible hydrogen content should be used; for electrode coatings and fluxes, special care should be taken to ensure proper baking; for wire electrodes, care should be taken to ensure surface cleanliness; in case of shielding gas the use of the purest possible shielding gas is recommended, and the use of shielding gas containing hydrogen is prohibited; and strict attention must also be paid to the purity of the base material. In addition, other important considerations for welding technology development will be outlined for carbon steels. Such as pipelines, where the most important technological aspects of welding will also be discussed, e.g. low heat input, multi-pass weld design, etc.

Abstract: This paper performs a non-linear analysis of a thin-walled structure. This simulation uses the finite element method to calculate actual conditions in a matrix calculation that is visualized. In the finite element method for numerical solutions of elliptic partial differential equations, the stiffness matrix represents the system of linear equations that must be solved to ensure approximate solutions to the differential equations. A plate will be given different stiffener shapes with the same pressure value. There will be two boundary conditions applied at this thin-walled structure, displacement and fixed support will be applied at the side of the plate. The output obtained from this simulation are von mises stress, total deformation, elastic strain and strain energy. Each model of thin-walled structure will have various values of this output. And the outcome of this research will be helpful as the selected design of the best stiffener able to improve the performance of thin-walled structure for design and manufacture of marine and land transportation.

Abstract: The interests focus on the tools, used in the case of evaluating the sustainability in the mobility structures. In the present is sustainable development regular part of planning in every scale. According to growing development and innovations, it was necessary to ensure a sustainable framework of progress or traffic performance. Sustainable development goals were founded as a reaction to limited natural sources and also as a response to the human impact on nature. Evolution of those goals started with the environmental base and then had also been added social and economic aspects. A study wants to find sophisticated tools for the evaluation of sustainable development in urban structures. As was located, in Europe exist methods for assessment of sustainability (EIA, SEA, LCA, EF, ER, GP, CBA, CEA, MCDA, EA, SIA, SEIA, etc.). Although even their large amount, they are mostly based on just one section of SD. Other tools which are used, are methods for evaluation sustainability (BREEAM, CASBEE-UD, GBI, LEED, IGBC, SB tool, DGNB, etc.), where are also included other sections (environmental, economic, social). Assessment tools were described and preliminary compared in the context of the factors’ coverage.

Abstract: This work presents some logistics and transportation challenges that were solved by 3 different student groups from 3 different European entities. These groups were: the STC Group, from The Netherlands, made of 12 students; the FHOO Group, from Austria, which comprised a number of 10 students and the IMST Group from Romania, made of 12 students. Each of the group had a specific task of finding the best logistic and transportation solution for each of their task. Also, they need to take into account several important parameters like air pollution problem, the shortest way of reaching to destination, the way of transport and others, which were decisive in choosing the right solution.

Abstract: This work presents some relevant data of the last period for the transport and logistics market from Romania. The Romanian transportation and logistics market is currently estimated at the value of over 30 billion lei (approximately 6.7 billion euros), with the biggest 20 players having a market share of almost 20%. The most concentrated area for the storage of the transported goods is in Bucharest, the capital city and around some cities like Timisoara, Cluj, Ploiesti, Brasov and Pitesti. There are also other cities like Oradea, Sibiu and Arad, that are on full expanding process.

Abstract: Green transportation has emerged as an efficient way to promote a sustainable supply chain. Transportation activities have significant impact on the whole supply chain at any decision levels. At an operational level, vehicle routing decisions are one of the most critical determinants of the release of transportation emissions. Therefore, this study develops a mathematical model, with an aim to construct routes that simultaneously minimize total cost and total CO₂ emissions from the transportation activities of a case study located in Can Tho City, Vietnam. A multiple-objective model with the consideration of different vehicle loading capacity, and time windows is then solved using a Weighted Tchebycheff method. Results show that route selection has a positive contribution toward a better balance between economic and environmental objectives.

Abstract: The practical expediency of the study of physical and mechanical properties of concrete, received from the mix, exposed at its feeding to the point of placement to the transportation with the inertia conveyor by means of original technology, which shows its competitiveness at factories producing precast concrete units, is proved. The experimental procedures of the research performed by the authors, where they analyzed the process of transportation relating to the use of ready-mix concrete on the dense aggregate, are described. The data on the effect of received previously rational values of the major parameters of engineering process studied (the parameters of asymmetric oscillations of work member of the conveyor and the thickness of the mix layer moved by it) both on the homogeneity of fresh concrete and the strength and strength homogeneity of hardened concrete are represented and analyzed.

Abstract: Shipping damage is one of the key problems of photovoltaic (PV) failures in the field. In addition, the detailed documents and industry standards are necessary, to avoid cell breakages or cracks during transportation. Therefore, ITRI coordinated some TFs to set up a series of experiments on the performance evaluation for PV-cell and PV-module caused by transportation and shipping. This work aims to standardize the test method for performance criteria of PV-cell and PV-module for transportation, and evaluates a guideline and risk analysis for shipped package of PV product to meet the relevant reliability concerns in a long-term perspective. PV products are shipped not only in a fab by forklift trucks or handling, but also transported outside a fab by shipping vehicles such as truck, train, aircraft and shipboard. Consequently, results were applied to SEMI Doc. 5431 and released as SEMI PV56 [1] by voting in 2014. PV product’s makers and buyers, or any other party interested like package designers, can thus have a common testing standard to refer to when desired.

Abstract: Architecture and building industry have been made diversified efforts to create a construction environment that promotes resource recycling. Many studies have been done to better understand and reduce energy consumption and CO₂ emissions throughout a building’s lifecycle. However, to promote sustainable development and a construction environment that facilitates resource recycling, more understanding and research is needed on energy consumption and CO₂ emissions during the stage of dismantling a building. Noting that, this research investigates CO₂ emissions in a building’s End-Of-Life (EOL) phase that includes dismantling of a building, transport and disposal of the waste generated in the course of dismantling residential buildings in Korea. According to the results of this study, CO₂ emissions in a building’s EOL phase was 3,561kg CO₂/100m² for apartments, 3,184 kgCO₂/100m² for brick houses and 1,137 kg CO₂/100m² for wooden houses. The results showed that transport and disposal process of demolition waste accounts for 90% of all CO₂ emissions in a building’s EOL phase. From this finding, it is necessary to have a proper, effective strategy for transport and disposal of demolition waste from dismantled buildings’ in order to reduce CO₂ emissions during a building’s EOL phase.