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The transportation impact on pollution and global climate change, has forced the automotive sector to search for more ecological solutions. Owing to the different properties of Fuel Cell (FC), real potential for reducing vehicles’ emissions has been witnessed. The optimization of FC integration within Electric Vehicles (EVs) is one of the original solutions. This paper presents an innovating solution of multi-stack Fuel Cell Electrical Vehicle (FCEV) in terms of efficiency, durability and ecological impact on environment. The main objective is to illustrate the interest of using the multi-stack FC system on the global autonomy, cycling, and efficiency enhancement, besides optimizing its operation performance.

AbstractWhen addressing community engagement and outreach, North American carbon capture and storage (CCS) projects have parameters unique to the continent, including the history of CO2 enhanced oil recovery (EOR), which goes back over 40 years in some jurisdictions and, aligned with this, the use of landmen and one-on-one dialogue with landowners and community residents that are well versed in oilfield technologies.These variables alone are in marked contrast to the CCS experiences of many global projects, which do not have the tradition of engaging in one-on-one discussion. Even where CCS projects have conducted extensive public consultation and education, significant opposition has shut down some, and put in jeopardy others, in a manner that contradicts the North American hydrocarbon experience. With the increase in North America of integrated CCS projects that go beyond CO2-EOR, a change in community engagement strategies has taken place under the unique auspices of the United States Department of Energy's (US DOE) Regional Carbon Sequestration Partnerships Initiative (RCSP). Part of the planning in each of these seven geographic regions includes significant public education, outreach, and communications programs, particularly in areas unfamiliar with injection and storage technologies (i.e., outside of traditional oil producing areas). The bringing together of different demonstration projects’ participants – not just nationally within the US but including projects in Western Canada – has allowed for the sharing of best practices between projects and across international jurisdictions.Such sharing is particularly true where the development of community engagement guidelines and strategies are concerned. The publication in 2010 of the US DOE's Best Practices for Public Outreach and Education for Carbon Storage Projects is one example where the experiences of several United States demonstration projects were brought to bear on developing communications guidelines, which in turn were used to help develop public outreach strategies for such projects as Aquistore in the province of Saskatchewan, Canada [1]. Another example of such international information sharing is the World Resources Institute's Guidelines for Community Engagement in Carbon Dioxide Capture, Transport, and Storage Projects where, over a period of a year and a half, international experts were brought together for round table discussions to form the basis of the guidelines and provide an international peer review [2].More recently, the development of an emergency response plan for the Illinois Basin – Decatur Project, led by the Midwest Geological Sequestration Consortium, one of the RCSP partnerships, drew upon this international collaborative structure, employing the experience of communicators from Schlumberger Carbon Services, the Petroleum Technology Research Centre (managers of the IEAGHG Weyburn- Midale CO2 Monitoring and Storage Project) and the Illinois State Geological Survey to develop a map of potential crisis points. This planning process brought together the lessons learned from various projects, risk assessments, media experiences, and best practices to help identify potential risks for the project (a list of events and scenarios) with the goal of creating response paths and directions for the management of risks and the mitigation of potential threats. These scenarios involved not only potential external issues – such as leakage or pipeline failure – but also addressed management issues internal to a project such as loss of key personnel or loss of funding.The development of this emergency response plan is an example to other projects of the value of interconnecting communications experiences between projects, and of identifying common high-risk scenarios that require advanced response planning.

Abstract In this study, an induced fracture model and Lower Silurian Longmaxi Formation shale were used to study the effects of retained fracturing fluid on production. The results reveal that permeability will decrease first after contacted with fracturing fluid, then it will recover with increasing immersion time. The major reason for permeability recovery is that induced fractures is formation because of internal pressure of pores higher than initiation pressure. A lot of natural fracture and induced fractures interconnected each other and form network cracks to provide channels for gas. Therefore, prolonging the shut-in time of shale reservoir after fracturing can improve the gas production.

The presence of principal ions in the water injected is essential for enhanced oil recovery by formation of water-wet state in carbonates. This study reaffirms this and presents an evaluation of the positive influence of both divalent as wells as monovalent ions on wettability alteration mechanisms during low salinity waterflooding using brines of varying ionic composition, referred to as “smart brines”. Zeta potentiometric analysis and reservoir simulation studies were conducted with diluted and smart brines that were prepared by varying the composition of principal ions. Surface charge of oil-saturated whole core samples of rock in the presence of various diluted and smart brines was estimated by zeta potential measurements. A comprehensive analysis of zeta potentiometric and reservoir simulation studies was done to establish and investigate the linkage between the recovery mechanism and the incremental recovery achieved. It is noted that zeta potential increases with the increasing level of dilution and it can be attributed to electric double-layer mechanism. On the contrary, simulation studies implied a different mechanism where an increase in effluent’s pH and Ca2+ mole fraction along with decrease in moles of minerals and saturation index implied rock dissolution was dominant mechanism. Moreover, the effect of mineral dissolution beyond the injection block is highly doubtful. This study demonstrates that an integrated approach from both zeta potentiometric and simulation studies can be used to provide insights into the underlying science of interactions at pore scale during a low salinity waterflood using smart brines. With the aid of an adequately designed upscaling procedure and protocol, the laboratory results can be further used towards developing field-scale models to obtain with realistic recovery factors with optimized brine composition and salinity.

Abstract In this work, the CO 2 equilibrium solubility in 2 M 1-diethylamino-2-propanol (1DEA2P) solution were determined as function of temperature (in the range of 298-333K), and CO 2 partial pressure (in the range of 8-101 kPa). The modified Li-shen K 2 correlation model was also developed and used to predicate the CO 2 equilibrium solubility in 1DEA2P solution. with an excellent ADD of 3.4%. The heat of CO 2 absorption in 1DEA2P solution estimated using Gibbs-Helmholtz equation was found to be -45.7 kJ/mol. In addition, the ion (1DEA2P, 1DEA2PH + , HCO 3 - , CO 3 2− ) speciation plots of the 1DEA2P-CO 2 -H 2 O system were developed in order to further understand the reaction process of 1DEA2P with CO 2 .

Mass transport phenomenon was first recognized by Stokes in 1847 using a Lagrangian description. Later, a basic theory for the mass transport in water waves in viscous fluid and of finite depth was derived by Longuet-Higgins in 1953. Theoretical solutions of mass transport in progressive waves of permanent type are subjected to the definitions of wave celerity in deriving the various finite amplitude wave theories. As it has been generally acknowledged that the Stokes wave theory can not yield a correct prediction of mass transport in the shallow depths, some new theories have been developed. Recently the authors(1974 § 1977) have derived a new finite amplitude wave theory in shallow water for quasi- Stokes and cnoidal waves by the so-called reductive perturbation method, in which the mass transport is formulated both in Lagrangian and Eulerian descriptions. On the experimental verification, Russell and 0sorio(1957) investigated and compared Longuet-Higgins' solution with experimental data of Lagrangian mass transport velocity obtained in a normal closed wave tank of finite length. Since then, many investigations, and nearly all of them, have employed the finite length of wave tank in carrying out their experiments. However, no experiment has yet been attempted at verifying the Stokes drift in progressive waves of permanent type in a wave tank of infinite length. It is not realistic nor economical in constructing such an infinitely long flume to investigate experimentally the mass transport velocity in progressive waves. Instead of using such an ideal wave tank, a new one incorporated with natural water re-circulation was equipped to carry out experiments by the authors(1978). It was confirmed from these experiments that mass transport in progressive waves of permanent type exists in the Same direction of wave propagation throughout the depth, and agrees with both the Stokes drift and the authors' new formulations, within the test range of experiments.