Relevant bibliographies by topics / Active Storage Capacity

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Book chapters
  4. Conference papers

Academic literature on the topic 'Active Storage Capacity'

Author: Grafiati
Published: 28 June 2021
Last updated: 15 February 2022

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Journal articles on the topic "Active Storage Capacity"

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Buczek, Bronislaw, and Leszek Czepirski. "Improvement of Methane Storage Capacity for Active Carbons." Adsorption Science & Technology 4, no. 4 (1987): 217–23. http://dx.doi.org/10.1177/026361748700400401.

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A method for increasing storage capacity by working of the commercial active carbons in a spouted bed is proposed. By abrasion of external layers of grain active carbons with better adsorptive properties, smaller voids of bed and improved attrition strength was obtained. Investigations of methane storage capacity for active carbon NORIT R2 with different degrees of external layers removed, were carried out. Experiments indicate that methane storage capacity can be increased up to 15–20% over commercial carbon.
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Buczek, Bronislaw, Leszek Czepirski, and Janusz Zietkiewicz. "Improvement of Hydrogen Storage Capacity for Active Carbon." Adsorption 11, S1 (2005): 877–80. http://dx.doi.org/10.1007/s10450-005-6039-8.

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Kertész, Milan, Radko Kozakovič, Luboš Magdolen, and Michal Masaryk. "Active Displacement Control of Active Magnetic Bearing System." Scientific Proceedings Faculty of Mechanical Engineering 22, no. 1 (2014): 32–37. http://dx.doi.org/10.2478/stu-2014-0006.

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AbstractThe worldwide energy production nowadays is over 3400 GW while storage systems have a capacity of only 90 GW [1]. There is a good solution for additional storage capacity in flywheel energy storage systems (FES). The main advantage of FES is its relatively high efficiency especially with using the active magnetic bearing system. Therefore there exist good reasons for appropriate simulations and for creating a suitable magneto-structural control system. The magnetic bearing, including actuation, is simulated in the ANSYS parametric design language (APDL). APDL is used to create the loops of transient simulations where boundary conditions (BC) are updated based upon a “gap sensor” which controls the nodal position values of the centroid of the shaft and the current density inputs onto the copper windings.
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Alain, Emmanuelle, and Brian McEnaney. "Storage of Methane in Resin Carbon Beads and Discs." Adsorption Science & Technology 23, no. 7 (2005): 573–84. http://dx.doi.org/10.1260/026361705775212493.

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Porous resin beads can be produced by the emulsion polycondensation of lignosulphonates with crosslinking agents. These resins can be converted into active carbon beads or pressed into discs that can be converted into active carbon monoliths. The stored methane volumetric capacity of the active carbon discs exceeded 150 v/v while the delivered capacity approached this value. The delivered capacity could be increased if steps were taken to release the large amount of methane retained in micropores after decompression. The volumetric methane capacities of the carbon beads were lower than those for the discs due to the presence of interparticulate voids.
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Hau, Lee Cheun, Yun Seng Lim, and Kein Huat Chua. "Active Control Strategy of Energy Storage System for Reducing Maximum Demand Charges under Limited Storage Capacity." Journal of Energy Engineering 143, no. 4 (2017): 04017010. http://dx.doi.org/10.1061/(asce)ey.1943-7897.0000440.

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Yannopoulos, Panayotis, and Alexander Demetracopoulos. "A Novel Methodology for Multiple-Year Regulation of Reservoir Active Storage Capacity." Water 10, no. 9 (2018): 1254. http://dx.doi.org/10.3390/w10091254.

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Reservoir design entails the determination of the required storage capacity over multiple years of low flow conditions to ensure the coverage of multiple-purpose water demands. Dam operation depends on many factors that may result in the decrease of required safe yields, leading to inadequate outflow supplies in the design period. This study addresses two issues: (a) the computation of reservoir active storage capacity performed with the aid of the new concept of a zero-height dam, a procedure easy to interpret physically and implement computationally; and (b) the generation of appropriate inflow data, provided that a substantial record of monthly inflows is available. The treatment of the inflow data for the generation of inflow sequences for any desired regulation period is performed by two original methods (First and Second), which are entirely different from other available methods and allow for the selection of a reservoir capacity with the desired level of exceedance probability. The two methods proposed give practically the same results. However, the Second Method, which generates inflow data consisting of hydrologic years with inflow values for each month randomly selected from the observed values for that month, is superior in terms of the ease with which inflow sequences are generated. Also, due to the large size of the random sample that can be generated, the exceedance probability curves are very smooth and allow for the easy selection of reservoir storage capacity with any level of desired exceedance probability. The proposed methodology may be useful for consultants and reservoir managers.
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Hsu, C. Y., and H. Y. Wu. "A new single-phase active power filter with reduced energy-storage capacity." IEE Proceedings - Electric Power Applications 143, no. 1 (1996): 25. http://dx.doi.org/10.1049/ip-epa:19960205.

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Navarro-Suárez, Adriana M., Javier Carretero-González, Teófilo Rojo, and Michel Armand. "Poly(quinone-amine)/nanocarbon composite electrodes with enhanced proton storage capacity." Journal of Materials Chemistry A 5, no. 44 (2017): 23292–98. http://dx.doi.org/10.1039/c7ta08489g.

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Xu, Tao, He Meng, Jie Zhu, et al. "Optimal Capacity Allocation of Energy Storage in Distribution Networks Considering Active/Reactive Coordination." Energies 14, no. 6 (2021): 1611. http://dx.doi.org/10.3390/en14061611.

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Energy storage system (ESS) has been advocated as one of the key elements for the future energy system by the fast power regulation and energy transfer capabilities. In particular, for distribution networks with high penetration of renewables, ESS plays an important role in bridging the gap between the supply and demand, maximizing the benefits of renewables and providing various types of ancillary services to cope the intermittences and fluctuations, consequently improving the resilience, reliability and flexibility. To solve the voltage fluctuations caused by the high permeability of renewables in distribution networks, an optimal capacity allocation strategy of ESS is proposed in this paper. Taking the life cycle cost, arbitrage income and the benefit of reducing network losses into consideration, a bilevel optimization model of ESS capacity allocation is established, the coordination between active/reactive power of associate power conversion system is considered, and the large scale nonlinear programming problem is solved using genetic algorithm, simulated annealing and mixed integer second-order cone programming method. The feasibility and effectiveness of the proposed algorithm have been verified.
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Luna, Adriana C., Nelson Leonardo Diaz Aldana, and Eider Alexander Narvaez. "Optimal Coordination of Active Generators in a Grid-Connected Microgrid." Ingeniería e Investigación 40, no. 3 (2020): 47–54. http://dx.doi.org/10.15446/ing.investig.v40n3.82665.

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In a microgrid composed of distributed active generators based on renewable energy sources, with heterogeneous features and generation profiles, the availability of the energy resource, the energy reserve capacity, and the degradation of the storage unit, define the constraints for the management and dispatch of each active generator. This can result in sub-optimal use of distributed energy resources in comparison with the operation of a single generation unit. However, under the current trend oriented to distributed installations, the overall operation could be improved if an aggregated operation is considered within the management level. This paper proposes a coordinated operation of the storage units associated with distributed active generators for a hybrid grid-connected microgrid. In order to optimize the use of the active generators, including the equalization of the state of charge of the storage units, a mathematical model is proposed. This model tries to avoid uneven degradation of the storage units, and, consequently, enhance the reserve capacity and reduce the depth of discharge by achieving the operation of the distributed system as a unified system. The simulations are carried out in GAMS and MATLAB in order to validate the system’s operation. The results show a better performing grid-connected microgrid with the proposed approach.
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Dissertations / Theses on the topic "Active Storage Capacity"

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Sun, Wei. "Maximising renewable hosting capacity in electricity networks." Thesis, University of Edinburgh, 2015. http://hdl.handle.net/1842/10483.

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The electricity network is undergoing significant changes in the transition to a low carbon system. The growth of renewable distributed generation (DG) creates a number of technical and economic challenges in the electricity network. While the development of the smart grid promises alternative ways to manage network constraints, their impact on the ability of the network to accommodate DG – the ‘hosting capacity’- is not fully understood. It is of significance for both DNOs and DGs developers to quantify the hosting capacity according to given technical or commercial objectives while subject to a set of predefined limits. The combinational nature of the hosting capacity problem, together with the intermittent nature of renewable generation and the complex actions of smart control systems, means evaluation of hosting capacity requires appropriate optimisation techniques. This thesis extends the knowledge of hosting capacity. Three specific but related areas are examined to fill the gaps identified in existing knowledge. New evaluation methods are developed that allow the study of hosting capacity (1) under different curtailment priority rules, (2) with harmonic distortion limits, and (3) alongside energy storage systems. These works together improve DG planning in two directions: demonstrating the benefit provided by a range of smart grid solutions; and evaluating extensive impacts to ensure compliance with all relevant planning standards and grid codes. As an outcome, the methods developed can help both DNOs and DG developers make sound and practical decisions, facilitating the integration of renewable DG in a more cost-effective way.
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Mubenga, Ngalula Sandrine. "A Lithium-Ion Battery Management System with Bilevel Equalization." University of Toledo / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1513207337549147.

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Wu, Horng-Yuan, and 吳鴻源. "Study of Photovoltaic Generation System with Active Power Filter Using Reduced Energy- Storage Capacitor." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/62610483252895459231.

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博士<br>國立高雄應用科技大學<br>電機工程系<br>98<br>Abstract In this dissertation, the subjects on maximum power point tracking (MPPT) technique and the shield effect of the grid connected photovoltaic generation system are studied. At first, a novel MPPT technique based on perturb and observe scheme is presented. The method uses the pulse width modulation signal of the boost converter as perturbation source. With comparing other MPPT technology, the proposed MPPT technique tracks the maximum power without disturbing the operation condition and has the excellent response. Secondly, a FPGA based SVPWM inverter is used to connect an electric utility and provides the AC power output. The inverter operates in dual mode: It is operated in the generation mode at sunlight to provide the AC power output, and the inverter is switched into the active power filter (APF) mode during the night or the day without sunshine in order to improve the power quality. With this operation manner, it is able to increase the utilization ratio of equipments. The APF uses the sampling technique to simplify the calculation of fundamental current. By using the sampling technique with energy balance concept, the APF could use a smaller storage capacitor and controls the terminal voltage of the storage capacitor within the reference range. The advantages of this APF scheme are: (1) Low prices (Using smaller storage capacitor), (2) Excellent transient response. A theoretical analysis and the design principle of the proposed method are provided. Its feasibility is verified by simulation (Matlab-Simulink and Pspice). Also, a 750W photovoltaic generation system is constructed for testing. The simulation and experimental results reveal that they have good steady state and transient responses.
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Chen, Hao. "High-frequency isolated dual-bridge series resonant DC-to-DC converters for capacitor semi-active hybrid energy storage system." Thesis, 2015. http://hdl.handle.net/1828/6451.

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In this thesis, a capacitor semi-active hybrid energy storage system for electric vehicle is proposed. A DC-to-DC bi-directional converter is required to couple the supercapacitor to the system DC bus. Through literature reviews, it was decided that a dual-bridge resonant converter with HF transformer isolation is best suited for the hybrid energy storage application. First, a dual-bridge series resonant converter with capacitive output filter is proposed. Modified gating scheme is applied to the converter instead of the 50% duty cycle gating scheme. Comparing to the 50% duty cycle gating scheme where only four switches work in ZVS, The modified gating scheme allows all eight switches working in ZVS at design point with high load level, and seven switches working in ZVS under other conditions. Next, a dual-bridge LCL-type series resonant converter with capacitive output filter is proposed. Similarly, the modified gating scheme is applied to the converter. This converter shows further improvement in ZVS ability. Operating principles, design examples, simulation results and experimental results of the two newly proposed converters are also presented. In the last part of the thesis, a capacitor semi-active hybrid energy storage system is built to test if the proposed converters are compatible to the system. The dual-bridge LCL-type series resonant converter is placed in parallel to the supercapacitor. The simulation and experimental results of the hybrid energy storage system match closely to the theoretical waveforms.<br>Graduate
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Zhuge, Kun. "Development of an Efficient Hybrid Energy Storage System (HESS) for Electric and Hybrid Electric Vehicles." Thesis, 2013. http://hdl.handle.net/10012/8085.

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The popularity of the internal combustion engine (ICE) vehicles has contributed to global warming problem and degradation of air quality around the world. Furthermore, the vehicles??? massive demand on gas has played a role in the depletion of fossil fuel reserves and the considerable rise in the gas price over the past twenty years. Those existing challenges force the auto-industry to move towards the technology development of vehicle electrification. An electrified vehicle is driven by one or more electric motors. And the electricity comes from the onboard energy storage system (ESS). Currently, no single type of green energy source could meet all the requirements to drive a vehicle. A hybrid energy storage system (HESS), as a combination of battery and ultra-capacitor units, is expected to improve the overall performance of vehicles??? ESS. This thesis focuses on the design of HESS and the development of a HESS prototype for electric vehicles (EVs) and hybrid electric vehicles (HEVs). Battery unit (BU), ultra-capacitor unit (UC) and a DC/DC converter interfacing BU and UC are the three main components of HESS. The research work first reviews literatures regarding characteristics of BU, UC and power electronic converters. HESS design is then conducted based on the considerations of power capability, energy efficiency, size and cost optimization. Besides theoretical analysis, a HESS prototype is developed to prove the principles of operation as well. The results from experiment are compared with those from simulation.
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Book chapters on the topic "Active Storage Capacity"

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Mohamed-Ghouse, Zaffar Sadiq, Cheryl Desha, and Luis Perez-Mora. "Digital Earth in Australia." In Manual of Digital Earth. Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-32-9915-3_21.

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Abstract Australia must overcome a number of challenges to meet the needs of our growing population in a time of increased climate variability. Fortunately, we have unprecedented access to data about our land and the built environment that is internationally regarded for its quality. Over the last two decades Australia has risen to the forefront in developing and implementing Digital Earth concepts, with several key national initiatives formalising our digital geospatial journey in digital globes, open data access and ensuring data quality. In particular and in part driven by a lack of substantial resources in space, we have directed efforts towards world-leading innovation in big data processing and storage. This chapter highlights these geospatial initiatives, including case-uses, lessons learned, and next steps for Australia. Initiatives addressed include the National Data Grid (NDG), the Queensland Globe, G20 Globe, NSW Live (formerly NSW Globe), Geoscape, the National Map, the Australian Geoscience Data Cube and Digital Earth Australia. We explore several use cases and conclude by considering lessons learned that are transferrable for our colleagues internationally. This includes challenges in: 1) Creating an active context for data use, 2) Capacity building beyond ‘show-and-tell’, and 3) Defining the job market and demand for the market.
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Wekesa, Chemuku, Leila Ndalilo, and Carolyne Manya. "Reconciling Community Livelihood Needs and Biodiversity Conservation in Taita Hills Forests for Improved Livelihoods and Transformational Management of the Landscape." In Fostering Transformative Change for Sustainability in the Context of Socio-Ecological Production Landscapes and Seascapes (SEPLS). Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-33-6761-6_2.

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AbstractThe fragmented forests of Taita Hills form an exceptional multi-functional socio-ecological production landscape with outstanding diversity of flora and fauna that provide ecosystem goods and services supporting human wellbeing and livelihood systems. However, these forests are threatened by illegal logging for wood products and encroachment for crop farming. A study was conducted in villages surrounding five forest fragments to establish the conservation programmes responsible for keeping these forests intact for provision of goods and services to the local communities. Semi-structured questionnaires were used to collect data from 250 respondents in 25 villages surrounding the five forest fragments. Twenty-five focus group discussions (FGDs) were held with key informants actively involved in conservation activities. Results showed that the Taita community conserves the forest fragments through management practices that integrate livelihood needs in conservation, such as butterfly farming, bee-keeping and ecotourism. Additionally, community tree nurseries have been established to produce seedlings for restoring degraded areas, and agroforestry belts have been established on the forests’ edges to provide wood products and protect the forests from encroachment. Likewise, village committees have been established to oversee conservation activities inside the village jurisdictional area. The integrated conservation and livelihood approach has reduced forest destruction, enhanced landscape connectivity for biodiversity conservation, increased incomes, enhanced capacity of the community to adapt to climate change, improved food security, enhanced carbon storage, strengthened traditional knowledge and practices, and ensured availability of clean water for the local population.
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Parangi, Tarun, and Manish Kumar Mishra. "Titanium Dioxide as Energy Storage Material: A Review on Recent Advancement." In Titanium Dioxide [Working Title]. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.99254.

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With the increased attention on sustainable energy, a novel interest has been generated towards construction of energy storage materials and energy conversion devices at minimum environmental impact. Apart from the various potential applications of titanium dioxide (TiO2), a variety of TiO2 nanostructure (nanoparticles, nanorods, nanoneedles, nanowires, and nanotubes) are being studied as a promising materials in durable active battery materials. The specific features such as high safety, low cost, thermal and chemical stability, and moderate capacity of TiO2 nanomaterial made itself as a most interesting candidate for fulfilling the current demand and understanding the related challenges towards the preparation of effective energy storage system. Many more synthetic approaches have been adapted to design different nanostructures for improving the electronic conductivity of TiO2 by combining with other materials such as carbonaceous materials, conducting polymers, metal oxides etc. The combination can be done through incorporating and doping methods to synthesize TiO2-based anodic materials having more open channels and active sites for lithium and/or sodium ion transportation. The present chapter contained a broad literature and discussion on the synthetic approaches for TiO2-based anodic materials for enhancing the lithium ion batteries (LIBs) and sodium ion batteries (SIBs) performance. Based on lithium storage mechanism and role of anodic material, we could conclude on future exploitation development of titania and titania based materials as energy storage materials.
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Cedillo-Hernandez, Manuel, David Mata-Mendoza, Diana Nuñez-Ramirez, et al. "Protecting the Sharing and Distribution of Color Images Hosted in Cloud Storage Services." In Frontiers in Artificial Intelligence and Applications. IOS Press, 2021. http://dx.doi.org/10.3233/faia210010.

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In recent years, the reversible data hiding techniques also known as lossless or invertible data hiding, has gradually become a very active research area. The reversibility of these schemes makes possible to extract the embedded data without errors, as well as to restore the cover medium to its original state. Furthermore, to guarantee the security and confidentiality of the hidden data and the image, reversible data hiding schemes over encrypted domain are presented as a promising solution to solve several issues of information security. This paper presents a study case of reversible data hiding schemes over encrypted domain oriented to the protection of the sharing and distribution of color images hosted in cloud storage services. The experimental results are presented in terms of imperceptibility, capacity, confidentiality, and visual quality, respectively.
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Ikram, Mujtaba, Sana Arbab, Bilal Tariq, et al. "Surface Science of Graphene-Based Monoliths and Their Electrical, Mechanical, and Energy Applications." In 21st Century Surface Science - a Handbook. IntechOpen, 2020. http://dx.doi.org/10.5772/intechopen.93318.

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Ceramic monoliths are applied in many insulating and high resistive engineering applications, but the energy application of ceramics monoliths is still vacant due to less conductivity of monolithic ceramics (for example, in silica- and alumina-based hybrids). This book chapter is a significant contribution in the graphene industry as it explains some novel and modified fabrication techniques for ceramics-graphene hybrids. The improved physical properties may be used to set ceramics-graphene hybrids as a standard for electrical, mechanical, thermal, and energy applications. Further, silica-rGO hybrids may be used as dielectric materials for high-temperature applications due to improved dielectric properties. The fabricated nano-assembly is important for a technological point of view, which may be further applied as electrolytes, catalysts, and conductive, electrochemically active, and dielectric materials for the high-temperature applications. In the end, this chapter discussed porous carbon as a massive source of electrochemical energy for supercapacitors and lithium-ion batteries. Carbon materials which are future of energy storage devices because of their ability to store energy in great capacity, so sustainability through smart materials got a huge potential, so hereby keeping in view all the technological aspects, this chapters sums up important contribution of graphene and porous carbon for applied applications.
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Fraile-Ardanuy, Jesus, Dionisio Ramirez, Sergio Martinez, Jairo Gonzalez, and Roberto Alvaro. "The Evolution from Electric Grid to Smart Grid." In Data Science and Simulation in Transportation Research. IGI Global, 2014. http://dx.doi.org/10.4018/978-1-4666-4920-0.ch013.

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In this chapter, an overview of electric power systems is presented. The purpose is to describe the structure and operation of the power system and its evolution to the new smart grids. The first section gives an introduction about the electric grid and its evolution. Then, there is a section with a brief description of the different components of the electric power system: generation, transmission, distribution, and consumption. The third section is related to power system control, explaining why control actions are necessary in the power system to maintain the balance between supply and consumption and to keep constant the system frequency (at 50 or 60 Hz). In order to understand future applications of electric vehicles, it is important to present a fourth section related to fundamentals of the electricity markets. The chapter finishes with a description of the future power systems with high penetration of intermittent renewable energies, energy storage capacity, active demand management, and integration with telecommunication infrastructure.
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Graf, William L. "Engineering Works." In Plutonium and the Rio Grande. Oxford University Press, 1995. http://dx.doi.org/10.1093/oso/9780195089332.003.0010.

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The hydrologic, sedimentologic, and geomorphic processes of the Northern Rio Grande as outlined in the previous chapters do not operate under natural, undisturbed conditions. Numerous engineering structures and activities have modified the processes and forms, and so an explanation of the movement and storage of contaminants in the system requires knowledge of the channelization and dam construction in the region. Channelization works are usually directed toward controlling the horizontal position of the channel, keeping it aligned in an economically advantageous arrangement, and maintaining a clear path for floodwaters to prevent them from spilling over the banks. The imposition of an artificial, stable channel on a naturally unstable system is rarely completely successful, but even with partial success, the newly defined system is a radical departure from the natural one. Floodwaters usually flow through modified channels at higher velocities than they do through natural channels, and so they may transmit more sediment in the channel. Low flows, however, may deposit sediment in the engineered channel, thereby reducing its efficiency and raising its bed. The abandonment of previously active minor channels or braided sections provides new areas of colonization for riparian vegetation, which may enhance sedimentation when flows exceed the capacity of the designed channel. The construction of dams obviously disrupts river processes in the reservoir area but has indirect effects throughout the river system because of newly instituted controls on flood flows, normal low flows, and sediment discharges. The first engineering structures on the Rio Grande probably appeared about A.D. 1200. With the collapse of irrigation societies in the Salt and Gila River valleys in Arizona and in tributaries of the San Juan River in Colorado and New Mexico, migrants moved into the Rio Grande Valley. By the time of the Spanish incursions in the middle and late sixteenth century, the native population had developed extensive irrigation systems along the entire Northern Rio Grande to support numerous pueblos.4 Diversion works on the main stream probably consisted of brush and boulder structures that directed the water into canal entrances through the low banks. These structures probably washed away with each spring flood.
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Corlett, Richard T. "Vegetation." In The Physical Geography of Southeast Asia. Oxford University Press, 2005. http://dx.doi.org/10.1093/oso/9780199248025.003.0017.

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Southeast Asia is not a natural biogeographical unit: it extends well north out of the tropics in Myanmar, while the eastern boundary bisects the island of New Guinea. It is also divided in two by one of the sharpest zoogeographical boundaries in the world, Wallace’s line (Figure 7.1; Whitmore 1987). There is, however, one important unifying feature that distinguishes it from most other regions of the tropics: Southeast Asia is a region of forest climates. Only on the highest mountains in Papua and northern Myanmar is the climate too cold for forest and, with the possible exception of some small rain-shadow areas, it is nowhere too dry. Elsewhere the only permanent non-forest vegetation in the region before the human impacts of the last few millennia was on coastal cliffs and beaches, seasonally flooded river plains, active volcanoes, and perhaps some small inland areas on soils too poor to support forest. Today, however, as a result of human impacts, forest occupies less than half of the region, with various anthropogenic vegetation types occupying the rest. The recognition of Southeast Asia, as defined here, as a separate political and geographic entity is very recent, so it is not surprising that there has been no previous account of the vegetation of the whole region. Van Steenis (1957) gave a general account of the vegetation of Indonesia, while Whitmore (1984) concentrated on the tropical evergreen forests of the region, with only a brief description of the vegetation of drier climates. Champion (1936) described the principal forest types of Myanmar, while Vidal (1997) covered the vegetation of Thailand, Cambodia, and Lao PDR. Numerous other publications describe smaller areas or specific vegetation types. To a first approximation, the potential natural vegetation of the region (Plate 1) up to about 20°N is controlled by two main environmental gradients: a horizontal gradient of water availability and a vertical, altitudinal gradient. Water availability is determined largely by the amount and distribution of rainfall, with the length of the dry season the most important factor, although the water storage capacity of the soil becomes increasingly significant at the drier end of the gradient.
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Kumar Sahoo, Prasanta, Chi-Ang Tseng, Yi-June Huang, and Chuan-Pei Lee. "Carbon-Based Nanocomposite Materials for High-Performance Supercapacitors." In Novel Nanomaterials. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.95460.

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Lightweight, flexible, wearable, and portable electronic gadgets have drawn significant attention in modern electronics industry. To power these gadgets, great efforts have been made to develop highly efficient energy-storage equipment. Among various power sources, a supercapacitor, acting as a bridge between the conventional battery and electrolytic capacitor, has been considered a promising portable energy storage device because of its high power density, fast charge/discharge rate, adequate operational safety, and excellent working lifetime. Hybrid supercapacitors, which combine redox materials with carbon-based materials, exhibit tremendous potential to fulfill the requirement of practical applications. In this chapter, we will review recent reports focusing on composite materials (i.e. metal oxide, metal hydroxide, and metal dichalcogenide composited with carbon materials) for the application in supercapacitors. The conclusion and futuristic prospects and challenges of highly efficient supercapacitors are briefly discussed.
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Verma, Chitresh, and Rajiv Pandey. "Mobile Cloud Computing Integrating Cloud, Mobile Computing, and Networking Services Through Virtualization." In Advances in Computer and Electrical Engineering. IGI Global, 2018. http://dx.doi.org/10.4018/978-1-5225-2785-5.ch005.

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Mobile computing is a critical technology area which is actively integrated with field of cloud computing. It is broadly an application of virtualization technology at both ends of client server architecture. The mobile and cloud computing is a natural combination as mobile devices have limited computing and storage capacity, thus to reap the benefits of high end computing, cloud is the answer. Thus, amalgamation of mobile platform with cloud platform is inevitable. This chapter shall deliberate on the various aspects of mobile computing, mobile cloud computing and its relationship with virtualization technology. The detailed integration aspects and virtualization shall be signified through case study and suitable real time examples. The chapter shall envisage a case study, modeling the virtualization in the context of mobile cloud.
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Conference papers on the topic "Active Storage Capacity"

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Paseka, Stanislav. "OPTIMAL ASSESSMENT OF RESERVOIR ACTIVE STORAGE CAPACITY UNDER UNCERTAINTY." In 19th SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings. STEF92 Technology, 2019. http://dx.doi.org/10.5593/sgem2019/3.1/s12.055.

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Yang Tan, Qingsheng Li, Qingming Zhao, and Dong Liu. "Confidential power supply and storage capacity calculation of the active distribution network planning." In International Conference on Renewable Power Generation (RPG 2015). Institution of Engineering and Technology, 2015. http://dx.doi.org/10.1049/cp.2015.0361.

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Ghafour, Karzan Mahdi, Razamin Ramli, and Nerda Zura Zaibidi. "Development of multi-item EOQ when the constraints of investment and storage capacity are active." In INNOVATION AND ANALYTICS CONFERENCE AND EXHIBITION (IACE 2015): Proceedings of the 2nd Innovation and Analytics Conference & Exhibition. AIP Publishing LLC, 2015. http://dx.doi.org/10.1063/1.4937024.

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Buscheck, Thomas A., Samuel Julius Friedmann, Yunwei Sun, et al. "Active CO2 Reservoir Management for CO2 Capture, Utilization, and Storage: An Approach to Improve CO2 Storage Capacity and to Reduce Risk." In Carbon Management Technology Conference. Carbon Management Technology Conference, 2012. http://dx.doi.org/10.7122/151746-ms.

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5

Gao, Le, Qiming Zhang, Richard A. Evans, and Min Gu. "Development of optically active solid medium for next generation long term high capacity optical data storage." In Conference on Lasers and Electro-Optics/Pacific Rim. OSA, 2020. http://dx.doi.org/10.1364/cleopr.2020.c1g_5.

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Liu, Simeng, and Gregor P. Henze. "Evaluation of Reinforcement Learning for Optimal Control of Building Active and Passive Thermal Storage Inventory." In ASME 2005 International Solar Energy Conference. ASMEDC, 2005. http://dx.doi.org/10.1115/isec2005-76085.

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This paper describes an investigation of machine-learning control for the supervisory control of building active and passive thermal storage inventory. Previous studies show that the utilization of either active or passive, or both can yield significant peak cooling load reduction and associated electrical demand and operational cost savings. In this study, a model-free learning control is investigated for the operation of electrically driven chilled water systems in heavy-mass commercial buildings. The reinforcement learning controller learns to operate the building and cooling plant optimally based on the feedback it receives from past control actions. The learning agent interacts with its environment by commanding the global zone temperature setpoints and TES charging/discharging rate. The controller extracts cues about the environment solely based on the reinforcement feedback it receives, which in this study is the monetary cost of each control action. No prediction or system model is required. Over time and by exploring the environment, the reinforcement learning controller establishes a statistical summary of plant operation, which is continuously updated as operation continues. This presented analysis revealed that learning control is a feasible methodology to find a near-optimal control strategy for exploiting the active and passive building thermal storage capacity, and also shows that the learning performance is affected by the dimensionality of the action and state space, the learning rate and several other factors. Moreover learning speed proved to be relatively low when dealing with tasks associated with large state and action spaces.
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Park, Chanwoo, Xudong Tang, Kwang J. Kim, Joseph Gottschlich, and Quinn Leland. "Metal Hydride Heat Storage Technology for Directed Energy Weapon Systems." In ASME 2007 International Mechanical Engineering Congress and Exposition. ASMEDC, 2007. http://dx.doi.org/10.1115/imece2007-42831.

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Directed Energy Weapon (DEW) systems in a pulse operation mode dissipate excessively large, transient waste heat because of their inherent inefficiencies. The heat storage system can store such a pulsed heat load not relying on oversized systems and dissipate the stored heat over time after the pulse operation. A compressor-driven metal hydride heat storage system was developed for efficient, compact heat storage and dissipation of the transient heat from the DEW systems. The greater volumetric heat storage capacity of metal hydride material was realized into more compact design than conventional Phase Change Material (PCM) systems. Other exclusive advantages of the metal hydride system were fast thermal response time and active heat pumping capability required for precision temperature control and on-demand cooling. This paper presented the operating principle and heat storage performance results of the compressor-driven metal hydride heat storage system through system modeling and prototype testing. The modeling and test results showed that the metal hydride system can store the average heat of 4.4kW during the heat storage period of 250 seconds and release the stored heat during the subsequent regeneration period of 900 seconds.
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Li, Hui, and Shengnan Shen. "An Efficient Thermal Actuator Design for the Thermal Flying Height Control." In ASME 2013 Conference on Information Storage and Processing Systems. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/isps2013-2935.

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The increasing demanding for higher capacity storage devices continues to push the recoding densities of hard disk drivers to their limit. This has led to a significant decrease in the slider-disk spacing to less than 10 nm. The active-head slider technology has recently been implemented in magnetic recording disk. The thermal flying height control (TFC) sliders are to use a small resistance heater incorporated near the read/write element. By applying a current to the heater, it can change the contour of slider due to the Joule heat induced thermal deformation, thereby controlling the flying height of the slider. Improving the power efficiency and obtaining a large reduction of the flying height are important in the application of thermal flying height control slider.
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Smith, Michael A., Christopher D. Depcik, John W. Hoard, Stanislav V. Bohac, and Dionissios N. Assanis. "Modeling of SCR NH3 Storage in the Presence of H2O." In ASME 2011 Internal Combustion Engine Division Fall Technical Conference. ASMEDC, 2011. http://dx.doi.org/10.1115/icef2011-60233.

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Diesel engines offer excellent fuel economy, but this comes at the expense of higher emissions of nitrogen oxides (NOx) and Particulate Matter (PM). To meet current emissions standards, diesel engines require aftertreatment devices. Concepts using combinations of catalysts are becoming more common in aftertreatment systems to reduce the cost and size of these aftertreatment systems. One combination is an LNT-SCR system where the LNT releases NH3 during a regeneration to be used by the SCR catalyst for further NOx reduction. This involves rich-lean cycling of the exhaust stream, which alters species concentrations in the exhaust. Most notably H2O and CO2 levels can vary from 4%–14% during lean-rich cycling. An investigation was performed using multiple Temperature Programmed Desorption (TPD) experiments to determine how H2O and CO2 affect NH3 storage capacity of an Fe-based zeolite SCR catalyst. It was determined that H2O and CO2 inhibit NH3 storage capacity of the SCR catalyst. This inhibition has shown a linear dependence on H2O and CO2 concentration at constant temperature. It was also determined that H2O is a much stronger inhibitor of NH3 storage capacity then CO2. Additional Temperature Programmed Desorption (TPD) experiments, were run where H2O and CO2 concentration (0%, 6%, and 10%) and the initial storage temperature (200°C, 250°C, 300°C, 350°C) were varied. Results suggest the addition of a reaction that creates competition for active sites on the catalyst between H2O and NH3. The additional reaction allows H2O and NH3 to be stored on open catalytic sites and has improved model accuracy by accounting for large changes in H2O, CO2, and temperature.
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Kailasan, Arunvel, Timothy Dimond, Paul Allaire, and David Sheffler. "Design and Analysis of a Unique Flywheel Energy Storage System: An Integrated Flywheel, Motor/Generator and Magnetic Bearing Configuration." In ASME Turbo Expo 2014: Turbine Technical Conference and Exposition. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/gt2014-26033.

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Energy storage is becoming increasingly important with the rising need to accommodate the energy needs of a greater population. Energy storage is especially important with intermittent sources such as solar and wind. Flywheel energy storage systems store kinetic energy by constantly spinning a compact rotor in a low-friction environment. When short-term back-up power is required as a result of utility power loss or fluctuations, the rotor’s inertia allows it to continue spinning and the resulting kinetic energy is converted to electricity. Unlike fossil-fuel power plants and batteries, the flywheel based energy storage systems do not emit any harmful byproducts during their operation and have attracted interest recently. A typical flywheel system is comprised of an energy storage rotor, a motor-generator system, bearings, power electronics, controls and a containment housing. Conventional outer flywheel designs have a large diameter energy storage rotor attached to a smaller diameter section which is used as a motor/generator. The cost to build and maintain such a system can be substantial. This paper presents a unique concept design for a 1 kW-hr inside-out integrated flywheel energy storage system. The flywheel operates at a nominal speed of 40,000 rpm. This design can potentially scaled up for higher energy storage capacity. It uses a single composite rotor to perform the functions of energy storage. The flywheel design incoporates a 5-axis active magnetic bearing system. The flywheel is also encased in a double layered housing to ensure safe operation. IGBT based power electronics are adopted as well. The design targets cost savings from reduced material and manufacturing costs. This paper focuses on the rotor design, the active magnetic bearing design, the associated rotordynamics and a preliminary closed-loop controller.
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