scholarly journals Analysis of Energy Sustainability in Ore Slurry Pumping Transport Systems

2019 ◽  
Vol 11 (11) ◽  
pp. 3191
Author(s):  
Yunesky Masip Macía ◽  
Jacqueline Pedrera ◽  
Max Túlio Castro ◽  
Guillermo Vilalta
Keyword(s):  
Mining Industry ◽  
Numerical Data ◽  
Statistical Technique ◽  
Transportation Systems ◽  
Transport Systems ◽  
Piping System ◽  
Energy Sustainability ◽  
Power Requirement ◽  
Average Decrease ◽  
Pipeline Systems

The mining industry is characterized by a high consumption of energy due to the wide diversity of processes involved, specifically the transportation of ore slurry via pipeline systems. This study investigates the relationship among the variables that define the slurry transportation system to minimize the power requirements and increase energy sustainability. The energy indicator (I), the criterion used for the energy assessment of three different pumping system layouts, was computed via numerical simulation. Optimization of response I was carried out through a statistical technique in the design of the experiment. In the study, four variables were defined to describe the slurry transportation systems, two of which are associated with the piping system (length L and diameter D); the other two are related to the slurry pattern (the volumetric concentration Cv and granulometry D50). The results show that all variables are statistically significant relative to the indicator I, with L having the greatest amplitude of variation in the response, increasing the energy indicator by approximately 60%. Likewise, the decrease of the D50 from 300 µm to 100 µm produces an average decrease of I of 24%. Moreover, the interaction among the factors indicates that two pairs of factors are correlated, namely D50 with L and D with L. Finally, a predictive model obtained a fit that satisfactorily relates with the numerical data, allowing, in a preliminary way, to identify the minimum power requirement in iron ore slurry pipeline systems.

A Comprehensive Study on Intelligent Transportation Systems

2018 ◽  
Vol 4 (10) ◽  
pp. 10
Author(s):  
Ankur Mishra ◽  
Aayushi Priya
Keyword(s):  
Intelligent Transportation Systems ◽  
Traffic Congestion ◽  
Transportation Systems ◽  
Environmental Conservation ◽  
Integrated System ◽  
Transport Systems ◽  
Transport Sector ◽  
Intelligent Transport System ◽  
Intelligent Transport ◽  
Transportation Sector

Transportation or transport sector is a legal source to take or carry things from one place to another. With the passage of time, transportation faces many issues like high accidents rate, traffic congestion, traffic & carbon emissions air pollution, etc. In some cases, transportation sector faced alleviating the brutality of crash related injuries in accident. Due to such complexity, researchers integrate virtual technologies with transportation which known as Intelligent Transport System. Intelligent Transport Systems (ITS) provide transport solutions by utilizing state-of-the-art information and telecommunications technologies. It is an integrated system of people, roads and vehicles, designed to significantly contribute to improve road safety, efficiency and comfort, as well as environmental conservation through realization of smoother traffic by relieving traffic congestion. This paper aims to elucidate various aspects of ITS - it's need, the various user applications, technologies utilized and concludes by emphasizing the case study of IBM ITS.

Potential Applications of Intelligent Transportation Systems to Road Freight Transport in Mexico

2000 ◽  
Vol 1707 (1) ◽  
pp. 81-85
Author(s):  
Alberto Mendoza ◽  
Antonio García
Keyword(s):  
Intelligent Transportation Systems ◽  
Intelligent Transportation ◽  
Freight Transport ◽  
Transportation Systems ◽  
Transport Systems ◽  
Environment Friendly ◽  
Generic Term ◽  
Road Freight ◽  
Potential Applications ◽  
Made In

In the past few years, tools have been developed based on different communication means with the purpose of achieving a safer, more efficient, and environment-friendly operation of vehicular flows in the transport systems. Some of the early means generally involved a very strong human participation. In the course of time and with the rapid progress made in electronics, telecommunications, and computer systems, such processes have become automated until generating a series of technologies that currently are incorporated into the single generic term of intelligent transportation systems (ITS). This research has multiple purposes. First, some characteristics of road freight transport in Mexico are presented. Then, with such characteristics under consideration, the ITS technologies with the largest potential for application to that transportation type are described. A vision of future implementation is shown. Finally, some conclusions are presented.

Low Carbon Mobility, Urgent futures and radical transitions

2016 ◽  
Author(s):  
James Higham ◽  
Debbie Hopkins
Keyword(s):  
Rapid Development ◽  
Transportation Systems ◽  
Transport Systems ◽  
Political Agenda ◽  
Low Carbon ◽  
Mobility Patterns ◽  
High Carbon ◽  
Transportation Emissions ◽  
Paris Climate Agreement ◽  
Transport Emissions

More people than ever before are moving more frequently and at accelerating speeds, often for shorter periods of time. These mobilities are largely dependent on unsustainable high-carbon technologies. The continued and accelerating growth of transportation emissions is attributed to changing mobility patterns among the high emitters of hypermobile developed societies, combined with the rapid development of high carbon intensity transport systems in emerging economies. Mitigation of transport emissions remains largely absent from the political agenda, despite growing recognition of the urgent need to address transportation emissions, because it is fundamentally incompatible with neoliberal ideals. The level of decarbonisation required to align regional and global transportation systems with the agreed targets of the Paris Climate Agreement (2015) has proved to be a particularly acute challenge. The Agreement recognises that radical and system-wide transitions toward low carbon mobility are urgently required. It is critically important that the varied social, cultural and geographic contexts of low carbon mobility transitions that are identified in Low Carbon Mobility Transitions are taken up and acted upon to inform the low carbon mobility transformations that are so obviously and urgently required. These insights must inform efforts to ensure the full accountability of transportation emissions, and to ensure that the INDCs that are outlined in the Paris Climate Agreement (2015) are upheld and achieved in full measure.

Conclusion

2021 ◽  
pp. 184-198
Author(s):  
Charles van Onselen
Keyword(s):  
South African ◽  
Mining Industry ◽  
Labour Markets ◽  
Transport Systems ◽  
The South ◽  
Rail Network ◽  
Forced Labour

Black Mozambicans consistently resisted the oppressive labour regime that used steam locomotives and the rail network to deliver them as indentured labourers to the South African mining industry. Some used the system to transport them to the best labour markets and then deserted to find other, better employment. The railways formed an integral part of a highly coercive system of industrial exploitation and, in that, differed from other historical situations where transport systems were used to further genocidal agendas. Yet, so deeply traumatic were the rail journeys to and from the mines that they became incorporated into the modern witchcraft beliefs of Africans which speak of trains without tracks and the recruitment of workers for forced labour in a zombie workforce. The scarring caused by the Night Trains is still with us, whether in songs, such as Stimela, or in witchcraft beliefs that reflect death through over-work at sub-subsistence wages.

scholarly journals Masivo: Parallel Simulation Model Based on OpenCL for Massive Public Transportation Systems’ Routes

Electronics ◽  
2019 ◽  
Vol 8 (12) ◽  
pp. 1501
Author(s):  
Juan Ruiz-Rosero ◽  
Gustavo Ramirez-Gonzalez ◽  
Rahul Khanna
Keyword(s):  
Simulation Model ◽  
Transport System ◽  
Public Transport ◽  
Public Transportation ◽  
High Performance ◽  
Simulation Models ◽  
Transportation Systems ◽  
Transport Systems ◽  
Public Transport System ◽  
Speed Up

There is a large number of tools for the simulation of traffic and routes in public transport systems. These use different simulation models (macroscopic, microscopic, and mesoscopic). Unfortunately, these simulation tools are limited when simulating a complete public transport system, which includes all its buses and routes (up to 270 for the London Underground). The processing times for these type of simulations increase in an unmanageable way since all the relevant variables that are required to simulate consistently and reliably the system behavior must be included. In this paper, we present a new simulation model for public transport routes’ simulation called Masivo. It runs the public transport stops’ operations in OpenCL work items concurrently, using a multi-core high performance platform. The performance results of Masivo show a speed-up factor of 10.2 compared with the simulator model running with one compute unit and a speed-up factor of 278 times faster than the validation simulator. The real-time factor achieved was 3050 times faster than the 10 h simulated duration, for a public transport system of 300 stops, 2400 buses, and 456,997 passengers.

scholarly journals Vehicular Ad hoc Network for Intelligent Transport System: A review

2018 ◽  
Vol 7 (4.36) ◽  
pp. 350
Author(s):  
Mohammed Saad Talib ◽  
Aslinda Hassan ◽  
Burairah Hussin ◽  
Ali Abdul-Jabbar Mohammed ◽  
Ali Abdulhussian Hassan ◽  
...  
Keyword(s):  
Traffic Safety ◽  
Intelligent Transportation Systems ◽  
Vehicular Ad Hoc Networks ◽  
Ad Hoc ◽  
High Efficiency ◽  
New Technologies ◽  
Negative Impact ◽  
Transportation Systems ◽  
Transport Systems ◽  
Intelligent Transport System

the numbers of accidents are increasing in an exponential manner with the growing of vehicles numbers on roads in recent years.  This huge number of vehicles increases the traffic congestion rates. Therefore, new technologies are so important to reduce the victims in the roads and improve the traffic safety. The Intelligent Transportation Systems (ITS) represents an emerging technology to improve the road's safety and traffic efficiency. ITS have various safety and not safety applications. Numerous methods are intended to develop the smart transport systems. The crucial form is the Vehicular Ad hoc Networks (VANET). VANET is becoming the most common network in ITS. It confirms human’s safety on streets by dissemination protection messages among vehicles. Optimizing the traffic management operations represent an urgent issue in this era a according to the massive growing in number of circulating vehicles, traffic congestions and road accidents. Street congestions can have significant negative impact on the life quality, passenger's safety, daily activities, economic and environmental for citizens and organizations. Current progresses in communication and computing paradigms fetched the improvement of inclusive intelligent devices equipped with wireless communication capability and high efficiency processors.  

A Frequency Approach to Mathematical Modeling of a Nuclear Power Plant Piping System

1985 ◽  
Vol 107 (1) ◽  
pp. 106-111 ◽  
Author(s):  
V. Skormin
Keyword(s):  
Power Plant ◽  
Nuclear Power Plant ◽  
Nuclear Power ◽  
Model Updating ◽  
Current Model ◽  
Statistical Technique ◽  
Parameter Estimates ◽  
Piping System ◽  
Model Configuration ◽  
Function Matrix

A methodology is presented for identification of a nuclear power plant piping system, which employs mathematical description in the form of transfer function matrix, frequency domain technique for estimation of system dynamic parameters, statistical technique for verification of model configuration and evaluation of parameter estimates, adaptive approach for current model updating. Model applications for estimation and monitoring of forcing functions, displacements, and stresses due to transient processes and steady state vibrations in the piping system are proposed. Methodology is illustrated by numerical examples.

Designing Offshore Pipeline Systems Divided Into Sections of Different Design Pressures

2004 ◽  
Author(s):  
Gunnar Staurland ◽  
Morten Aamodt
Keyword(s):  
Uniform Design ◽  
External Pressure ◽  
Transportation Systems ◽  
Point Of View ◽  
Pipeline System ◽  
Operating Pressure ◽  
Pipeline Systems ◽  
Upstream Pressure ◽  
Transmission Pipeline ◽  
Design Pressure

Norwegian waters have been a main arena for development of subsea pipeline technology over the last 25 year. The gas transportation systems from Norway to continental Europe comprise the largest and longest sub sea pipelines in the world. Codes traditionally require a pipeline to be designed with a uniform design pressure between stations with overpressure protection capabilities. However, the downstream part of a very long gas transmission pipeline may, after commissioning, rarely, if ever, see pressures near the pressure at the upstream end. There is, therefore, a potential for cost reduction and capacity improvement if two, or several, sections of different design pressure could be used without having to implement sub sea pressure regulation and overpressure protection facilities at the point of transition between the different sections of design pressure. In determining the lower design pressure the shutdown of the pipeline outlet facilities, at any point in time allowing for a practicable, achievable delay for closure of the upstream inlet valve has to be taken into account. The settle out pressure in a “normal” shut-in situation shall then not exceed the lower design pressure. In addition, deep water pipelines are often designed to withstand buckling due to bending and external pressure during installation, and may therefore locally tolerate a much higher internal pressure than the pipeline was designed for. Transmission pipelines crossing deepwater areas may therefore be designed for two or more operating pressures along the pipeline, thereby optimizing the cost. Even more important, for already existing pipelines, the capacity may be significantly increased by utilizing the upstream heavy wall sections. The operating pressure range for a long offshore gas transmission pipeline is very wide compared to an onshore line, typically between an upstream pressure of 150–250 bar, and a downstream pressure of 60 to 80 bar over a distance of several hundred kilometers. It may take hours to notice the closure of a downstream valve on the upstream pressure. Unless the pipeline is extensively packed, it is obvious that the pressure drop along the pipeline may be taken into account by allowing a lower design pressure for downstream part than for the upstream part. Thereby, the investment cost can be reduced. This paper describes the principles of designing a pipeline system divided into sections of different design pressures from a hydraulic point of view. The basis is the offshore standard for designing submarine pipeline systems, DNV OS-F101. The focusing will be on improvements in transportation efficiency, cost reductions and operational issues.

ASME B31.12 Hydrogen Piping and Pipeline Code Design Rules and Their Interaction With Pipeline Materials Concerns, Issues and Research

2009 ◽  
Author(s):  
Louis E. Hayden ◽  
Douglas Stalheim
Keyword(s):  
Research And Development ◽  
Test Data ◽  
Design Methods ◽  
Piping System ◽  
Code Design ◽  
Chemical Compositions ◽  
System Research ◽  
Design Rules ◽  
Commercial Grade ◽  
Pipeline Systems

The ASME B31.12 Hydrogen Piping and Pipeline Code has just been published for use in designing hydrogen piping and pipeline systems. The B31.12 Committee has developed two design methods that take current steel specifications and chemical compositions into consideration. Due to the variability of chemistry and the lack of statistically meaningful test data these two methods place a design or testing burden on the owner of the pipeline or piping system. Research and development that can be applied to an understanding of the desirable microstructure along with a cleanliness level that is suitable in commercial grade steels for hydrogen service is imperative.

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