Relevant bibliographies by topics / Regenerativ energy

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Regenerativ energy'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2022

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Journal articles on the topic "Regenerativ energy"

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Kim, Sang-Soo, and Yohji Okada. "Variable Resistance Type Energy Regenerative Damper Using Pulse Width Modulated Step-up Chopper." Journal of Vibration and Acoustics 124, no. 1 (July 1, 2001): 110–15. http://dx.doi.org/10.1115/1.1419204.

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This paper describes a new technique for improving the damping property and efficiency of an energy regenerative damper. It is intended for a linear DC motor type vibration damper to regenerate vibration energy efficiently. Normally a regenerative damper can regenerate vibration energy only at high speed motion. For low speed motion, the damper has nonlinear characteristics with dead zone and cannot regenerate energy. In order to overcome this problem, a step-up chopper is introduced between the actuator and the charging circuit. The energy is regenerated from low speed and low voltage actuator to high voltage charging circuit. This paper also proposes a new control technique to the step-up chopper by using pulse width modulated signals. The damper can change its damping coefficient and the energy can be regenerated more efficiently. The proposed damper is applied to an active mass damper system. A simple experimental setup is used to validate the proposed technique. The results show an increase in performance and energy regeneration as compared to the previously proposed regenerative damper.
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Seth, B., and W. C. Flowers. "Generalized Actuator Concept for the Study of the Efficiency of Energetic Systems." Journal of Dynamic Systems, Measurement, and Control 112, no. 2 (June 1, 1990): 233–38. http://dx.doi.org/10.1115/1.2896130.

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Energy efficiency is an important consideration for the success of many portable as well as other energetic systems. One way to improve the efficiency of an engineering system is through regeneration. A regenerative actuator returns some of the otherwise dissipated energy required for passive operation. A regenerative actuator can plow back part of energy normally lost in the passive operation of the actuator into useful energy. The amount of regenerated energy will depend on the dissipation characteristics of the actuator and the regenerative potential of the process itself. In order to analyze regeneration a bond graph model of a generalized regenerative actuator is developed. The regenerative potential is analyzed in the power phase plane trajectory. By superimposing such a trajectory with the dissipation characteristics of the actuator, a framework is developed to study the feasibility of regeneration. A possible way of optimizing the regenerated energy is also considered in some depth.
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He, San, Xiaozhuo Zhang, Xingyu Xia, Chuanjun Wang, and Sulin Xiang. "Low energy consumption electrically regenerated ion-exchange for water desalination." Water Science and Technology 82, no. 8 (September 17, 2020): 1710–19. http://dx.doi.org/10.2166/wst.2020.442.

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Abstract A new regeneration method of ion exchange resin named Adjacent Bed Electrically Regenerated Ion-exchange (ABERI) was proposed to eliminate the environmental impact of traditional chemical regeneration and improve the economy of replacing chemical regeneration with electrical regeneration. The desalting operation of ABERI was the same as the conventional mixed bed. When the resins were exhausted, anion and cation resins were separated and then packed in a dedicated regenerator adjacently. The resins were regenerated by the H+ and OH− ions produced from a pair of electrodes installed on both sides of the resin bed. By optimizing the regeneration time, current, and feed water flow rate, the energy consumption of ABERI was 0.38 kWh/m3 water; that is, 54% of that of another electrical regeneration technology, membrane-free electrodeionization (MFEDI). Compared with MFEDI, the quality and quantity of purified water produced after regeneration were improved. In ABERI, the average conductivity and the volume (times of bed volumes) of the purified water are 0.9 μS/cm and 109; that is, 75 and 133% of that of MFEDI, respectively. The preliminary economic analysis showed that ABERI offers the potential to regenerate ion exchange resin in an eco-friendly and cost-effective manner.
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Yu, Ying Xiao, and Kyoung Kwan Ahn. "Application of Hydraulic Transformer on Energy Saving for Boom System of Hybrid Hydraulic Excavator." Applied Mechanics and Materials 868 (July 2017): 118–23. http://dx.doi.org/10.4028/www.scientific.net/amm.868.118.

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Facing the energy crisis and environmental problems, saving energy of construction machinery, especially in the hydraulic excavator is very important. Regeneration of the potential energy is an effective solution to save energy. However, the conventional hybrid excavator can’t regenerate the potential energy. This paper proposes a new structure of boom system of hydraulic excavator as well as a control strategy. The focus of the paper is using hydraulic transformer to regenerate energy and reusing the regenerated energy. The simulation is carried out by the AMESim software. From the simulation results, this new system has a high efficiency for energy saving.
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Monarkin, Nikolay, Anton Sinitsyn, Mikhail Pavlov, and Timur Akhmetov. "The influence of main parameters of regenerative heat exchanger on its energy efficiency." E3S Web of Conferences 178 (2020): 01024. http://dx.doi.org/10.1051/e3sconf/202017801024.

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The influence of various parameters of stationary switching regenerative heat exchangers used for ventilation on its thermal efficiency was studied. Considered are the geometric (length, diameter and wall thickness of a single equivalent nozzle channel), thermophysical (density and heat capacity of the nozzle material) and operation (air flow through the regenerator and the time of one stage of accumulation/regeneration of thermal energy) parameters.
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Zhou, Bing, Panpan Yu, Mei-Yao Lin, Tao Sun, Yanmin Chen, and Zu-Hang Sheng. "Facilitation of axon regeneration by enhancing mitochondrial transport and rescuing energy deficits." Journal of Cell Biology 214, no. 1 (June 7, 2016): 103–19. http://dx.doi.org/10.1083/jcb.201605101.

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Although neuronal regeneration is a highly energy-demanding process, axonal mitochondrial transport progressively declines with maturation. Mature neurons typically fail to regenerate after injury, thus raising a fundamental question as to whether mitochondrial transport is necessary to meet enhanced metabolic requirements during regeneration. Here, we reveal that reduced mitochondrial motility and energy deficits in injured axons are intrinsic mechanisms controlling regrowth in mature neurons. Axotomy induces acute mitochondrial depolarization and ATP depletion in injured axons. Thus, mature neuron-associated increases in mitochondria-anchoring protein syntaphilin (SNPH) and decreases in mitochondrial transport cause local energy deficits. Strikingly, enhancing mitochondrial transport via genetic manipulation facilitates regenerative capacity by replenishing healthy mitochondria in injured axons, thereby rescuing energy deficits. An in vivo sciatic nerve crush study further shows that enhanced mitochondrial transport in snph knockout mice accelerates axon regeneration. Understanding deficits in mitochondrial trafficking and energy supply in injured axons of mature neurons benefits development of new strategies to stimulate axon regeneration.
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Wong, Ronnie Joseph, and James Andrew Smith. "Regenerative effects in the Sit-to-Stand and Stand-to-Sit movement." Robotica 33, no. 1 (January 31, 2014): 107–26. http://dx.doi.org/10.1017/s026357471400006x.

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SUMMARYWhile Sit-to-Stand and Stand-to-Sit are routine activities and are crucial pre-requisites to walking and running their underlying dynamics are poorly understood. Furthermore, the potential for using these movements to regenerate energy in energy-sensitive devices such as orthoses, prostheses and humanoid robots has never been examined. Insights in this domain can lead to more energy-efficient prosthesis, orthosis and humanoid robot designs.OBJECTIVES: The objectives are two-fold: first, to determine how much energy can be regenerated during standard movements related to transitions between sitting and standing on a scale humanoid model and second, to determine if the chosen actuator could produce better results if the gear ratio were modified. This manuscript's main contribution to the literature is by showing which joint provides the most regenerative effect during transitions between sitting and standing.MODEL DESIGN AND IMPLEMENTATION: Joint trajectories from existing biomechanics trials of sitting and standing transitions were fed into a 1/10 scale model of a humanoid robot. The robot model, developed in MapleSim, is comprised of standard and off-the-shelf subcomponents, including amplifier, NiMH battery and Robotis Dynamixel RX-28 actuators.RESULTS: Using the RX-28 actuator, the ankle, knee and hip joints all show a degree of regenerative effects, the hip demonstrates the most dramatic levels during the transition from standing to sitting. This contrasts with recent publications which show that the knee has the most important regenerative effects during walking and running. It is also found that for under 3 degree trajectory error the regenerative effect is best for all joints when the gear ratio is increased from the RX-28's 193:1 value to a value of approximately 760:1 for the ankle, 630:1 for the knee and 600:1 for the hip.CONCLUSIONS: During transitions between sitting and standing the greatest potential for regeneration occurs in the hips. Therefore, systems designed to implement regenerative effects between sitting and standing need to include subsystems at the hip for maximum regenerative effects.
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Zhang, Yue, Congjie Ou, Bihong Lin, and Jincan Chen. "The Regenerative Criteria of an Irreversible Brayton Heat Engine and its General Optimum Performance Characteristics." Journal of Energy Resources Technology 128, no. 3 (October 22, 2005): 216–22. http://dx.doi.org/10.1115/1.2213272.

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An irreversible cycle model of the Brayton heat engine is established, in which the irreversibilities resulting from the internal dissipation of the working substance in the adiabatic compression and expansion processes and the finite-rate heat transfer in the regenerative and constant-pressure processes are taken into account. The power output and efficiency of the cycle are expressed as functions of temperatures of the working substance and the heat sources, heat transfer coefficients, pressure ratio, regenerator effectiveness, and total heat transfer area including the heat transfer areas of the regenerator and other heat exchangers. The regenerative criteria are given. The power output is optimized for a given efficiency. The general optimal performance characteristics of the cycle are revealed. The optimal performance of the Brayton heat engines with and without regeneration is compared quantitatively. The advantages of using the regenerator are expounded. Some important parameters of an irreversible regenerative Brayton heat engine, such as the temperatures of the working substance at different states, pressure ratio, maximum value of the pressure ratio, regenerator effectiveness and ratios of the various heat transfer areas to the total heat transfer area of the cycle, are further optimized. The optimal relations between these parameters and the efficiency of the cycle are presented by a set of characteristic curves for some assumed compression and expansion efficiencies. The results obtained may be helpful to the comprehensive understanding of the optimal performance of the Brayton heat engines with and without regeneration and play a theoretical instructive role for the optimal design of a regenerative Brayton heat engine.
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Yang, Xiaofeng, Wentao Zhao, Yanling Liu, Long Chen, and Xiangpeng Meng. "Design and experimental study of the energy-regenerative circuit of a hybrid vehicle suspension." Science Progress 103, no. 1 (September 16, 2019): 003685041987499. http://dx.doi.org/10.1177/0036850419874999.

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This article concerns a hybrid vehicle suspension system that can regenerate energy from vibrations. To further improve the performance of the hybrid vehicle suspension system, the design of the energy-regenerative circuit is investigated. First, the force tests of the linear motor used in the hybrid vehicle suspension were carried out, and the key parameters of the linear motor were obtained. Then, the selection procedures of the protective resistance, inductance, and initial terminal voltage of the super capacitor were discussed. These aforementioned parameters’ values were determined by considering the impact of the hybrid suspension on the dynamic performance indexes and the energy-regenerative efficiency. Simulations showed that, in comparison to the original hybrid suspension system, the designed hybrid suspension effectively improved the energy-regenerative efficiency, and that the dynamic performance indexes of the suspension were synchronously improved. Given the result of the simulation analysis, which were validated by bench tests, it is shown that the optimized energy-regenerative circuit presents an enhanced regeneration efficiency, with an improvement of nearly 13% compared to the original suspension system.
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Zou, Junyi, Xuexun Guo, Lin Xu, Gangfeng Tan, Chengcai Zhang, and Jie Zhang. "Design, Modeling, and Analysis of a Novel Hydraulic Energy-Regenerative Shock Absorber for Vehicle Suspension." Shock and Vibration 2017 (2017): 1–12. http://dx.doi.org/10.1155/2017/3186584.

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To reduce energy consumption or improve energy efficiency, the regenerative devices recently have drawn the public’s eyes. In this paper, a novel hydraulic energy-regenerative shock absorber (HERSA) is developed for vehicle suspension to regenerate the vibration energy which is dissipated by conventional viscous dampers into heat waste. At first, the schematic of HERSA is presented and a mathematic model is developed to describe the characteristic of HERSA. Then the parametric sensitivity analysis of the vibration energy is expounded, and the ranking of their influences is k1≫m2>m1>k2≈cs. Besides, a parametric study of HERSA is adopted to research the influences of the key parameters on the characteristic of HERSA. Moreover, an optimization of HERSA is carried out to regenerate more power as far as possible without devitalizing the damping characteristic. To make the optimization results more close to the actual condition, the displacement data of the shock absorber in the road test is selected as the excitation in the optimization. The results show that the RMS of regenerated energy is up to 107.94 W under the actual excitation. Moreover it indicates that the HERSA can improve its performance through the damping control.
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Dissertations / Theses on the topic "Regenerativ energy"

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Phan, Qui Tra. "Untersuchungen zur Nutzung der Solarenergie für die Wärme-Kälte-Kopplung unter tropischen Bedingungen." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2008. http://nbn-resolving.de/urn:nbn:de:swb:14-1166198530075-86101.

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Die Untersuchungen zur Nutzung der Solarenergie werden für die klimatischen Bedingungen von Vietnam durchgeführt. Um das Problem der Elektroenergieversorgung in Vietnam zu verringern und um speziell den Lebensstandard in den ländlichen Gebieten zu erhöhen, werden Anstrengungen unternommen, um Anwendungen der Solarenergie zu entwickeln. Es wäre erstrebenswert, wenn ein komplettes Solartechniksystem zur Hausversorgung zur Verfügung stehen würde. Der Konzipierung und Auslegung der Solartechnik wird ein sog. Referenzhaus zugrunde gelegt, das hinsichtlich seiner Bauweise und Größe typisch für die ländlichen Gegenden in Mittel- und Südvietnam ist. Der Gesamtenergiebedarf orientiert sich an der Lebensweise und der Anzahl der Hausbewohner. Erforderlich ist die Bereitstellung von Warmwasser am Tage sowie von Kälte, die für Frischhaltung von Nahrungsmitteln auch nachts erzeugt werden kann. Dies wird als solares Warmwasser- und Kälteerzeugungssystem bezeichnet. Für die Überwindung von Höhenunterschieden bei der Wasserförderung wird ein solarer Stirlingmotor als Pumpenantrieb in Betracht gezogen. Zur Warmwasserbereitung sollen geeignete Solarkollektoren verwendet werden. Zur Kälteerzeugung scheint sich ein Adsorptionskälteaggregat vorteilhaft in das Gesamtsystem einzuordnen.
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Phan, Qui Tra. "Untersuchungen zur Nutzung der Solarenergie für die Wärme-Kälte-Kopplung unter tropischen Bedingungen." Doctoral thesis, Technische Universität Dresden, 2006. https://tud.qucosa.de/id/qucosa%3A23593.

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Die Untersuchungen zur Nutzung der Solarenergie werden für die klimatischen Bedingungen von Vietnam durchgeführt. Um das Problem der Elektroenergieversorgung in Vietnam zu verringern und um speziell den Lebensstandard in den ländlichen Gebieten zu erhöhen, werden Anstrengungen unternommen, um Anwendungen der Solarenergie zu entwickeln. Es wäre erstrebenswert, wenn ein komplettes Solartechniksystem zur Hausversorgung zur Verfügung stehen würde. Der Konzipierung und Auslegung der Solartechnik wird ein sog. Referenzhaus zugrunde gelegt, das hinsichtlich seiner Bauweise und Größe typisch für die ländlichen Gegenden in Mittel- und Südvietnam ist. Der Gesamtenergiebedarf orientiert sich an der Lebensweise und der Anzahl der Hausbewohner. Erforderlich ist die Bereitstellung von Warmwasser am Tage sowie von Kälte, die für Frischhaltung von Nahrungsmitteln auch nachts erzeugt werden kann. Dies wird als solares Warmwasser- und Kälteerzeugungssystem bezeichnet. Für die Überwindung von Höhenunterschieden bei der Wasserförderung wird ein solarer Stirlingmotor als Pumpenantrieb in Betracht gezogen. Zur Warmwasserbereitung sollen geeignete Solarkollektoren verwendet werden. Zur Kälteerzeugung scheint sich ein Adsorptionskälteaggregat vorteilhaft in das Gesamtsystem einzuordnen.
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Palm, Kristina. "Det riskabla engagemanget : Om regenerativ utveckling av mänskliga resurser, eldsjälar och ledarskap i radikal utveckling." Doctoral thesis, KTH, Industriell arbetsvetenskap, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-4662.

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This thesis concentrates on the consequences of strong commitment⁄ Engagement in contemporary work. The aim of the thesis is to Build knowledge on regeneration and development of human resources. The empirical research consists of three case studies mainly Based on interviews: two are explorative studies on four strongly Committed champions within two projects of radical reorganisation. The third Empirical study is exploring one strongly engaged champion within an extensive Business rationalisation. The two first case studies were originally set for Other research and are therefore analyzed secondarily here. The case studies indicate that the strong commitment that is needed in contemporary Work is problematic when crises arise. The commitment and energy Tend to reduce quickly in bad managed crises. In order to break an evil Circle of energy loss the manager’s support is central, and also the possibility to Learn from experiences in an acceptable climate.
Avhandlingen fokuserar på det starka engagemangets konsekvenser i Det samtida arbetet. Syftet är att bidra med förståelse kring engagemangets Betydelse för regenerativ utveckling av mänskliga resurser. Avhandlingen baseras på studier av fem förändringsledare och deras Tre utvecklingsprojekt. Den främsta metoden för insamling av Information var intervjuer, men även andra metoder såsom deltagande observationer Har använts. Av de fem starkt engagerade förändringsledarna som Studerats var det fyra som misslyckades att nå sina projektmål, endast en lyckades Och gick stärkt ur projektet. Två av projekten var radikala, det vill säga de Sökte bryta med befintliga värderingar och organisera arbetet efter en annan Människosyn. Studien visar på att starkt engagemang som ju ofta behövs i ett samtida Gränslöst arbete också kan vara problematiskt när krissituationer uppstår. Individens Engagemang och energi tenderar att förbrukas, istället för att återskapas Vid en illa behandlad kris. För att kunna bryta en ond cirkel av energiförbrukning Föreslås chefers stöd vara en viktig komponent, men också möjligheten Att lära från sina erfarenheter i ett tillåtande klimat.
QC 20100902
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LI, Zhen. "Analysis of dropbox assisted hydraulic traction." Thesis, KTH, Maskinkonstruktion (Inst.), 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-209486.

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The research looks at the advantages and disadvantages of a hydraulic auxiliary drive (HAD) system which is installed on a 25 meter long timber transport vehicle. The purpose is to investigate the performance with regard to energy, economy and environment of the system due to the added components, the hydraulic accumulators. The auxiliary system that is used on the vehicle is simply a hydrostatic transmission system. Ideally, the fuel consumption and cost can be reduced by using accumulators. To verify this hypothesis, model-based simulations were performed in a software environment and the result was analyzed for a linear and repeatedly accelerating and decelerating driving cycle. Additionally, comparisons were made between the HAD system with and without the assistance of accumulators. From the simulation results, the system assisted by accumulators consumes approximately 14% less fuel than the other. And it produces 15% more tractive effort when the vehicle is accelerating. The paper also includes the determination of the size of accumulators, both theoretically and with simulations. By comparison, there is a small difference between the results from the theoretical calculation and the simulations, which might be caused by a neglecting the volumetric losses in the simulation process. Ideally, an accumulator with a size of 57 L was found to be the most efficient size for the studied driving cycle. Beyond that speed, the efficiency will decrease to some extent. Physical tests are not presented in this paper, but they will be done in the future.
Den presenterade forskningen studerade fördelar och nackdelar med ett hydraulisk hjälpsystem för fordonsdrift (HAD) för en 25 meter lång timmerlastbil. Syftet var att undersöka hur drivlinans prestanda med avseende på energy, ekonomi och miljöpåverkan, påverkas av de adderade komponenterna, de hydrauliska ackumulatorerna. Hjälpsystemet är helt enkelt ett hydrostatiskt transmissionssystem. Idealt, kan bränsleförbrukning och kostnad reduceras genom att använda ackumulatorer i systemet. För att verifiera denna hypotes, har modell-baserade simuleringar utförts och resultaten har analyserats för konstantfartskörning och en körcykel med upprepade accelerationer och inbromsningar. Dessutom, har ett HAD-system med och utan ackumulator jämförts. Simuleringsresultaten visar att ett system med ackumulatorer förbrukar ca 14% mindre bränsle än ett system utan ackumulatorer. Ett ackumulatorstött system ger också 15% högre framdrivningseffekt vid accelereration. I avhandlingen dimensionera också storleken på ackumulatorerna, både teoretiskt och med simuleringar. Det finns en liten skillnad mellan resultaten från den teoretiska beräkningen och simuleringarna, som kan bero på att volymetriska förlusterna inte har tagits med i simuleringarna. En ackumulator med en storlek på 57 L visar sig ha den mest effektiva storleken för den studerade körcykeln. Vid högre körhastigheter, kommer verkningsgraden att minska till viss del. Inga fysiska tester har gjorts, men de kommer att utföras i framtiden.
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Zhechkov, Lyuben. "Simulations of the hydrogen storage capacities of carbon materials." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2007. http://nbn-resolving.de/urn:nbn:de:swb:14-1193672413012-23518.

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Many methods have been proposed for efficient storage of molecular hydrogen for fuel cell applications. However, despite intense research efforts, so far, the industrial parameters of 6.5% mass ratio and 62 kg/m3 volume density are still questionable though the results are obtained by either experimentally or via theoretical simulations on reversible model systems. Carbon-based materials, have always been regarded as the most attractive physisorption substrates for the storage of hydrogen. Theoretical and experimental studies on various model carbon systems, however, failed to reach the elusive goal. In this work, it is shown that insufficiently accurate carbon - hydrogen diatomic interaction potentials, together with the neglect and incomplete treatment of the quantum effects in previous theoretical investigations, led to misleading conclusions for the absorption capacities of different carbon materials. A proper account of the contribution of quantum effects to the free energy and the equilibrium constant for hydrogen adsorption suggest that the industry specifications can be approached in a graphite-based physisorption system. The theoretical prediction can be realised by optimising the topology, the cavity shape and the accessible surface of the carbon structures.
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Alegrim, Georg, and Alexander Anaje. "Värmeåtervinning av luft i kycklingstallar : Återanvändning av energin i frånluften för luftförvärmning." Thesis, Linnéuniversitetet, Sjöfartshögskolan (SJÖ), 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-82239.

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I Sverige har konsumtionen av kyckling per invånare ökat de senaste åren och idag konsumeras 23,2kg per person och år. Eftersom tillväxten för svensk kyckling är hög ökar också medvetenheten hos företag att investera i klimatsmarta alternativ för att minska energibehovet som leder till en minskad uppvärmningskostnad. Det valda djurstallet värms upp med en flispanna där vattenburna värmeelement förser stallet med värme längs väggarna. Syftet med studien är att undersöka hur mycket värmeenergi som går att spara genom att använda den utsugna luften för att värma den luften som sugs in med hjälp av en värmeväxlare. Det har ansetts problematiskt att använda stallets frånluft för att tillgodose energi i form av värme eftersom den oftast är dammig och detta bidrar till att filter och kanaler täpps igen. Idag finns det ett antal luftvärmeväxlare som klarar denna typ av damm och partiklar.  Två olika värmeväxlare har jämförts, en rekuperativ (plattvärmeväxlare) och en regenerativ (roterande värmeväxlare). Stallet måste hålla ett lågt CO2 värde och kycklingarnas ströbädd måste hållas torr med hjälp av en låg luftfuktighet. Ventilationens volymflöde är ett beräknat teoretiskt värde. Resultatet av de två jämförda värmeväxlarna visar att den regenerativa (roterande) värmeväxlaren återför fukt vilket som bidrar till en fuktigare ströbädd jämfört med den rekuperativa (plattvärmeväxlare) som inte återför fukt. Studien genomfördes under kycklingarnas uppfödningstid, vilket varade från första januari i 34 dagar framåt. Dag 28–30 blir stallet självförsörjande på värme och värmeväxlaren kan då generera den värmen som krävs utan anläggningens tillhörande flispanna. Med hänsyn till skallklimatet är det att föredra en plattvärmeväxlare då den roterande värmeväxlaren återför vatten av tre gram per kg torr luft. Undersökningen visar det totala värmebehovet, som idag är cirka 48,2 MWh under en uppfödningsomgång, kan minskas med 24,8 MWh med hjälp av en värmeväxlare under denna omgång.
The consumption of chicken per inhabitant have increased in Sweden the last couple of years and today 23,2 kg is consumed per inhabitant and year. Because of this rise of Swedish chicken consumption, the awareness of investing in climate-smart alternatives have increased by the companies. The companies are decreasing the energy required during production, which ultimately leads to a reduced heating cost. The animal stall is heated by a boiler where water-based heating elements are providing the animal stall with heat along the walls.  It has been considered problematic to heat up the animal stall by reintroducing the air from inside the stall due to the fact that this air often is too dusty, which contributes to blockage of filters and ducts. There are a number of different heat exchangers that can handle this kind of dust and particles today.  Two different heat exchangers will be compared, a recuperative plate heat exchanger and a regenerative rotary heat exchanger. The animal stall must keep a low CO2 value and it is important to keep the chickens bedding dry by a low humidity inside the stall. The study shows that the total heat for one breeding round, which today is approximately 48,2MWh, which equals a saving by using an air heat exchanger of 24,8MWh. The result of the comparison of the two heat exchangers has shown that the regenerative (rotary) heat exchanger reintroduces moisture in the stall, which the recuperative (plate heat exchanger) does not. The follow up for this study was 34 days, from the chickens’ birth to the slaughter. During day 28-30 the animal stall becomes self-sufficient considering heat, which means that the heat exchanger could generate the heat required for the facility without the use of the stalls chip boiler. The study is implemented with a calculated volume flow due to a short outlet channel on the system, this can lead to a risk of a minor faulty value. Regard to the humidity in the stall, it is preferable to use a plate heat exchanger as the rotating heat exchanger precipitates water of 3 grams/kg of dry air.
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Graves, Kynan E., and kgraves@swin edu au. "Electromagnetic energy regenerative vibration damping." Swinburne University of Technology, 2000. http://adt.lib.swin.edu.au./public/adt-VSWT20060307.120939.

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This thesis documents a PhD level research program, undertaken at the Industrial Institute Swinburne, Swinburne University of Technology between the years of 1997 and 2000. The research program investigated electromagnetic energy regenerative vibration damping; the process of recovering energy from damped, vibrating systems. More specifically, the main research objective was to determine the performance of regenerative damping for the application of vehicle suspension systems. This question emerged due to the need for continuous improvement of vehicle efficiency and the potential benefits possible from the development of regenerative vehicle suspension. It was noted, at the outset of this research, that previous authors had undertaken research on particular aspects of regenerative damping systems. However in this research, the objective was to undertake a broader investigation which would serve to provide a deeper understanding of the key factors. The evaluation of regenerative vibration damping performance was achieved by developing a structured research methodology that began with analysing the overall requirements of regenerative damping and, based on these requirements, investigated several important design aspects of the system. The specific design aspects included an investigation of electromagnetic machines for use as regenerative damping devices. This analysis concentrated on determining the most promising electromagnetic device construction based on its damping and regeneration properties. The investigation then proceeded to develop an 'impedance-matching' regenerative interface, in order to control the energy flows in the system. This form of device had not been previously developed for electromagnetic vibration damping, and provided a significant advantage in maximising energy regeneration while maintaining damping control. The results from this analysis, when combined with the issues of integrating such a system in vehicle suspension, were then used to estimate the overall performance of regenerative damping for vehicle suspension systems. The methodology and findings in this research program provided a number of contributing elements to the field, and provided an insight into the development of regenerative vehicle systems. The findings revealed that electromagnetic regenerative vibration damping may be feasible for applications such as electric vehicles in which energy efficiency is a primary concern, and may have other applications in similar vibrating systems.
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Sun, Zhifeng. "Energy Consumption Optimization of Electric Vehicles." Thesis, KTH, Fordonsdynamik, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-302774.

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This master thesis report has studied several methods to improve the energy consumption of an electric vehicle equipped with two permanent magnet synchronous motors. Two driving torque distribution maps are developed based on efficiency map and load transfer, respectively. The drive torque distribution map based on the efficiency map shows up to 8.94% energy saving. Two regenerative braking strategies are designed and compared. Both strategies have pure regenerative brake at low decelerations and it is controlled by a modified acceleration pedal map. Strategy 1 does not add more regenerative braking when the brake pedal is pressed thus it is simpler while strategy 2 can blend in more motor torque. Rear axle steering is also studied in terms of contribution to energy consumption and an LQR controller is developed to control the vehicle with rear axle steering.
Denna rapport avhandlar ett examensarbete där flera metoder har studerats för att förbättra energikonsumptionen för ett elektriskt fordon med två permanentmagnetsynkrona motorer. Två fördelningskartor för drivande moment är framtagna baserat på effektivitetskartor och lastöverföring. Fördelningskartorna för drivande moment som är baserat på effektivitet visar upp till 8,94% energiminskning. Två olika regenerativa bromsstrategier är framtagna och jämförda. Båda strategierna har ren regeneration vid låga decelerationer och är reglerat genom modifierat gaspedalsmappning. Strategi 1 ger inte mer regeneration när bromspedalen trycks ned och är då enklare medans strategi 2 kan blanda in mer vridmoment från elmotorn. Bakaxelstyrning är också studerat i termer av dess bidrag till energikonsumption samt en LQR regulator är utvecklad för reglering av fordonets bakaxelstyrning.
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Hudson, Daniel Alexander. "Regeneration architecture." Thesis, Montana State University, 2010. http://etd.lib.montana.edu/etd/2010/hudson/HudsonD0510.pdf.

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In a world of excess, people rarely stop to realize their impact on their environments. Our built environment is especially feeling the effect of our irresponsibility, and the solution is only a matter of re-wiring our perceptions of energy usage. Many technologies make it possible to have the impossible, but nobody stops to question whether or not these advances are beneficial. A presumably sustainable system turned out to be one of the most energy wasteful ones in existence. In the complex process of getting food from the field to your house, the best solution is to simplify. Nature will do most of the work; we need to learn to work with it. Current building practices can benefit greatly from this concept, to rethink the existing process by simply cutting out the unneeded steps and using the free energy available to us every day. Our values need to change. Because the corporation controls so much of our daily lives, they are the ones that will bring about the change in consciousness we desperately need. By re-designing Sysco headquarters to do everything that the company claims to do (and currently doesn't), and interact with the public in a new and radical way, not only can we make changes to how we think about the built environment, but we can also start to show that a change in awareness is entirely possible. If we can change the values of those that make the biggest differences in our world, then we've effectively changed an entire populations' way of thinking.
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Huhn, Robert. "Optimierte Wasserwärmespeicher für die Nutzung regenerativer und fossiler Energiequellen." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2008. http://nbn-resolving.de/urn:nbn:de:bsz:14-ds-1200578083155-91197.

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Die Nutzung regenerativer Energiequellen stellt in vielen Systemen und Versorgungsnetzen wesentlich höhere Anforderungen an die Konstruktion, Auslegung und Betriebsführung von Wärmespeichern als konventionelle Energieträger. Aber auch das Potenzial eines Brennwertkessels kann mit einem optimierten Wasserwärmespeicher besser ausgeschöpft werden. Entscheidend für die Effizienzsteigerung von Wärmespeichern mit ausgeprägter thermischer Schichtung ist die Ausbildung und Aufrechterhaltung einer schmalen Mischzone zwischen dem wärmeren und kälteren Bereich des Speichers. Eine schmale Mischzone und eine niedrige Temperatur im unteren „entladenen“ Speicherbereich wirken sich positiv auf den Wirkungsgrad von Sonnenkollektoren und Brennwertkesseln aus. Beim Einsatz von Wärmepumpen verbessert sich deren Leistungszahl. Der Beitrag zeigt die Auswirkungen der Betriebsweise und der konstruktiven Details des Wärmespeichers, insbesondere der Be- und Entladevorrichtungen, auf, welche durch experimentelle und numerische Untersuchungen ermittelt wurden
The spreading integration of renewable sources of energy into conventional heat supply systems places high demands on the designing, dimensioning and operation of hot water storage tanks. A pronounced thermal stratification is of positive influence for the efficiency of solar collectors, condensing boilers and the COP of heat pumps connected to the storage tank. The extent of the thermal mixing layer determines the volumetric efficiency of the tank and thus the economics of investment and operation. In this paper, a method is presented by which the losses of hot water storage tanks are correlated to the tank design and operating conditions
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Books on the topic "Regenerativ energy"

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Wietschel, Martin. Regenerative Energieträger: Der Beitrag und die Förderung regenerativer Energieträger im Rahmen einer Nachhaltigen Energieversorgung. Weinheim: Wiley-VCH, 2002.

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Drillisch, Jens. Quotenregelung für regenerative Stromerzeugung. München: R. Oldenbourg, 1999.

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Scheer, Nina. Energiewende fortsetzen: Regenerative Vollversorgung vor dem Durchbruch. Berlin: Vorwärts Buch, 2012.

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Garland, Laurin A. Regenerative braking system development: Phase I. [Montréal]: The Centre, 1993.

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Hussein. Regenerative Energien für Entwicklungsländer: Rahmenbedingungen, Strategien, Technologien, Wirtschaftlichkeit, Ökologie. Baden-Baden: Nomos, 1987.

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Kaltschmitt, Martin. Regenerative Energien in Österreich: Grundlagen, Systemtechnik, Umweltaspekte, Kostenanalysen, Potenziale, Nutzung. Wiesbaden: Vieweg + Teubner, 2009.

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Mautz, Ru diger. Auf dem Weg zur Energiewende: Die Entwicklung der Stromproduktion aus erneuerbaren Energien in Deutschland ; eine Studie aus dem Soziologischen Forschungsinstitut Go ttingen (SOFI). Go ttingen: Univ.-Verl. Go ttingen, 2008.

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Potentialbestimmung und Wirtschaftlichkeitsanalyse der regenerativen Energiequellen in Kolumbien. Frankfurt am Main: P. Lang, 1996.

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Greco, Richard. Vinyl manufacturer floors VOC emissions with energy-efficient regenerative technology. Houston: MacDonald Communications, 1994.

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Auerbach, Andreas. Nachwachsende Rohstoffe als regenerative Energieträger am Beispiel Raps. Münster: Lit, 1992.

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Book chapters on the topic "Regenerativ energy"

1

Quaschning, Volker. "Energie und Klimaschutz." In Regenerative Energiesysteme, 13–57. München: Carl Hanser Verlag GmbH & Co. KG, 2015. http://dx.doi.org/10.3139/9783446443334.001.

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Quaschning, Volker. "Energie und Klimaschutz." In Regenerative Energiesysteme, 13–67. München: Carl Hanser Verlag GmbH & Co. KG, 2019. http://dx.doi.org/10.3139/9783446461147.001.

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Quaschning, Volker. "Energie und Klimaschutz." In Regenerative Energiesysteme, 13–54. München: Carl Hanser Verlag GmbH & Co. KG, 2013. http://dx.doi.org/10.3139/9783446435711.001.

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Kitanovski, Andrej, Jaka Tušek, Urban Tomc, Uroš Plaznik, Marko Ožbolt, and Alojz Poredoš. "Active Magnetic Regeneration." In Magnetocaloric Energy Conversion, 97–166. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-08741-2_4.

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Lehmann, Steffen. "Activating the Food-Water-Energy Nexus." In Urban Regeneration, 109–31. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-04711-5_4.

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Dang, Pranvat Singh, and Rudraksh Raajesh Haran. "Fuzzy Regenerative Braking Strategy." In Intelligent Manufacturing and Energy Sustainability, 749–57. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-1616-0_73.

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Li, Xiang, and Xin Yang. "Timetabling with Regenerative Energy Maximization." In Subway Energy-Efficient Management, 45–62. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-7785-7_4.

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Bao, Jia-han, Yu-wan Cen, Xiao-hua Ye, and Ye Ye. "Researches on the Energy Regeneration and Vibration Reduction Performance of a New Hydraulic Energy Regenerative Suspension." In Proceedings of the 6th International Asia Conference on Industrial Engineering and Management Innovation, 605–15. Paris: Atlantis Press, 2015. http://dx.doi.org/10.2991/978-94-6239-148-2_59.

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Kohl, Harald, and Wolfhart Dürrschmidt. "Regenerative Energieträger - ein Überblick." In Erneuerbare Energie, 4–13. Weinheim, Germany: Wiley-VCH Verlag GmbH & Co. KGaA, 2012. http://dx.doi.org/10.1002/9783527646906.ch1.

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Heinonen, Jukka, and Juudit Ottelin. "Carbon Accounting for Regenerative Cities." In Future City, 115–29. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-71819-0_6.

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AbstractThe carbon budget for limiting global warming to the targeted 1.5 ° is running out. Cities have a central role in climate change mitigation, as the vast majority of all greenhouse gas emissions occur to satisfy the energy and material needs of cities and their residents. However, cities typically only account for their direct local emissions from transportation, industry, and energy production. This may lead to the so-called low-carbon illusion of cities following from producing little and reporting low emissions, while extensively relying on imported material and energy flows. Consumption-based accounting, or carbon footprinting, enables overcoming this problem by assigning the emissions to the end user regardless of the place of production. However, currently the carbon footprinting methods only capture the harm side, and not the potential positive effects, the restorative or regenerative impacts, caused by green infrastructure, reforestation, and carbon capture and storage, for example. These positive impacts are sometimes called “carbon handprint”. In this chapter, we create a handprint-extended carbon footprinting method to illustrate how restorative and regenerative impacts can be incorporated consistently in the carbon accounting of cities and carbon footprints of consumers. We also link the discussion on regenerative cities with the remaining carbon budgets.
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Conference papers on the topic "Regenerativ energy"

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Kim, Sang-Soo, and Yohji Okada. "Energy Regenerative Damper Using Pulse Width Modulated (PWM) Step-up Chopper." In ASME 1999 Design Engineering Technical Conferences. American Society of Mechanical Engineers, 1999. http://dx.doi.org/10.1115/detc99/movic-8415.

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Abstract This paper describes a new technique of improving the efficiency of an energy regenerative damper. It is intended for an electro-dynamic type vibration damper to regenerate vibration energy efficiently. Normally regenerative damper can regenerate vibration energy only at high speed motion. For low speed motion, the damper has nonlinear characteristics with dead zone and the energy is not regenerated. In order to overcome the problem of dead zone, a step-up chopper is introduced between the actuator and the charging circuit. The energy is regenerated from the low speed and low voltage actuator to high voltage charging circuit. This paper also proposes a new control technique to the step-up chopper by using pulse width modulated (PWM) signal. The proposed damper is applied to a dynamic damper system and is simulated on a computer. A simple experiment is performed to confirm the proposed technique. The results show an improvement in performance than the usual regenerative damper.
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Baker, Derek K., and Bilgin Kaftanog˘lu. "Trends in COP for Adsorption Cooling Cycles With Thermal Regeneration and Finite Number of Beds." In ASME 2008 2nd International Conference on Energy Sustainability collocated with the Heat Transfer, Fluids Engineering, and 3rd Energy Nanotechnology Conferences. ASMEDC, 2008. http://dx.doi.org/10.1115/es2008-54039.

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A thermodynamic model is developed to predict trends in limiting COP of an adsorption cooling cycle with thermal regeneration between n beds, where n is any even number and each bed is spatially isothermal. The results of the model indicate the optimum distribution of beds throughout the cycle to maximize thermal regeneration. Simulations were run for silica gel-water and zeolite-water adsorbent-refrigerant pairs as the maximum bed temperature and the bed’s sensible load were varied. For the silica gel-water pair, the exothermic adsorption process occurs at lower temperatures than the endothermic desorption process, which prevents the latent loads from being thermally regenerated. This inability to regenerate latent loads results in a relatively small opportunity to increase COP through thermal regeneration, and this opportunity decreases rapidly with increasing number of beds. Conversely, for the zeolite-water pair much of the exothermic adsorption process occurs over the same temperature range as the endothermic desorption process, which allows a significant portion of the latent loads to be thermally regenerated. This ability to regenerate latent loads results in a much larger opportunity to increase COP through thermal regeneration, and this opportunity decreases much more gradually with increasing number of beds.
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Juhala, Jyri, and Matti Pietola. "Hydraulic Accumulator as Energy Storage." In ASME 2011 International Mechanical Engineering Congress and Exposition. ASMEDC, 2011. http://dx.doi.org/10.1115/imece2011-63780.

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Most of the hydraulically operated systems have potential to improve the energy efficiency of the system by using energy regeneration. The recovered energy can be stored in various ways. However, previous studies made by the authors have shown that in hydraulically operated regenerative systems a pressure accumulator seems to be potential option as energy storage. Hydraulic accumulator has also some disadvantages, e.g., energy losses in form of heat transfer. The efficiency can be improved by using different heat recovery methods. To compare these methods numerically, a reliable model of an accumulator is needed. The primary aim of this study is to build a multidisciplinary model of a basic piston type hydraulic accumulator and to validate the model with experimental measurements. The second aim is to experimentally test the effects of a honeycomb heat regenerator by efficiency point of view. The results manifest that multidisciplinary modeling is useful and valid tool for modeling the piston type hydraulic accumulator. The results also indicate that the heat regenerator attached inside the accumulator’s gas volume improves energy efficiency significantly.
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Aoshima, Keita, Nanako Miura, and Akira Sone. "A Study of Self Powered Active Seismic Isolation Floor Device Using Rotational Inertia Mass Damper." In ASME 2018 Pressure Vessels and Piping Conference. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/pvp2018-84354.

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In recent years, active seismic isolations have been developed actively, but they have a problem of running when external power supply is cut off. To solve this problem, we proposed a self-powered active seismic isolation floor device based on the idea of electric power regeneration. This device can control using regenerated vibration energy from earthquakes, and doesn’t require external energy to produce control force. However, when long-period earthquakes occur, this device can’t regenerate enough electric power to decrease vibration of equipment. The aim of this paper is to propose a new model using a rotating inertia mass damper (inerter) which can decrease vibration of equipment and regenerate electric power more effectively than the previous model. The inerter is a mechanical element corresponding to capacitor in electrical circuits. In this paper, we compared the response and amount of energy regeneration of previous model with those of the new model adding inerter to the previous model. By using its characteristic of rotation of the spindle, the effect of electric power regeneration can be improved for long-period earthquakes. We discuss the usefulness of inerter in self-powered active isolation floor device for long-period earthquakes.
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Okada, Yohji, and Hideyuki Harada. "Active and Regenerative Control of Electrodynamic Vibration Damper." In ASME 1995 Design Engineering Technical Conferences collocated with the ASME 1995 15th International Computers in Engineering Conference and the ASME 1995 9th Annual Engineering Database Symposium. American Society of Mechanical Engineers, 1995. http://dx.doi.org/10.1115/detc1995-0621.

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Abstract A new method of regenerating electric power from the vibration energy is presented. An electro-dynamic actuator is controlled by a relay controller to regenerate electric power during the highspeed motion of the actuator. For the lowspeed motion, an active control algorithm is applied to the same actuator to achieve good damping performance. This idea can be applied to a vehicle suspension system which is composed of electrodynamic actuator and spring. The system is simulated on a computer to evaluate the vibration damping property and energy regenerative capability. A simple experimental apparatus is made to confirm its capability.
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Carapellucci, Roberto, and Lorena Giordano. "Enhancing Energy and Economic Performances of Combined Cycle Power Plants by Means of Gas-Cycle Regeneration." In ASME 2014 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/imece2014-38297.

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Efficiency improvement in the gas turbine sector has been mainly driven by increasing the turbine inlet temperature and compressor pressure ratio. For a fixed technology level, a further efficiency gain can be achieved through the utilization of waste thermal energy. Regeneration is an internal recovery technique that allows the reduction of heat input required at combustor, by preheating the air at compressor outlet. Under certain operating conditions, the temperature of exhaust gas leaving the regenerator is still enough high to allow the steam production via an heat recovery steam generator (HRSG). Regeneration in steam-gas power plants (CCGT) has the potential to enhance thermal efficiency, but reduces the margins for external recovery and then the bottoming steam cycle capacity. Moreover, the reduction of exhausts temperature at gas turbine outlet requires the reconsideration of HRSG operating parameters, in order to limit the increase of waste heat at the stack. The aim of this study is to explore the potential benefits that regeneration in the gas cycle gives on the whole steam-gas power plant. The extent of energy and economic performances improvement is evaluated, varying the gas turbine specifications and the layout and operating conditions of HRSG. Hence simple and regenerative configurations based on single and multi-pressure HRSG are compared, focusing on efficiency, specific CO2 emissions and unit cost of electricity (COE).
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Emaikwu, Nehemiah, David Catalini, Jan Muehlbauer, Yunho Hwang, Ichiro Takeuchi, and Reinhard Radermacher. "Development of a Cascade Elastocaloric Regenerator." In ASME 2019 13th International Conference on Energy Sustainability collocated with the ASME 2019 Heat Transfer Summer Conference. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/es2019-3887.

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Abstract Heat pumps based on the vapor compression cycle account for a significant portion of energy use around the world. However, growing demands for energy efficient and environmentally friendly technologies have created a need for new space conditioning approaches. Novel systems which use elastocaloric material have shown potential to replace traditional vapor compression due to high energy efficiency and use of environmentally friendly, solid-state refrigerants. The solid-state refrigerants exhibit the elastocaloric effect, a phenomenon that occurs when metal alloys experience stress-induced reversible phase transformations resulting in latent heat release or absorption. Prototypes built in the Center for Environmental Energy Engineering have utilized the active elastocaloric regeneration (AER) operating method to develop high temperature gradients between the ends of a regenerative heat exchanger made of tubular elastocaloric material. Though this schema significantly increases the temperature span developed by elastocaloric cooling devices, the current heat pump design leads to temperature degradation as a result of conduction along the length of the tubes in the regenerator. The novel regenerator concept presented in this work mitigates that issue by using short, thermally insulated tubes layers which also enables fluid flow over external surface areas of the material.
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Okada, Yohji, Sang-Soo Kim, and Keisuke Ozawa. "Energy Regenerative and Active Control Suspension." In ASME 2003 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2003. http://dx.doi.org/10.1115/detc2003/vib-48560.

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This paper introduces a variable resistance type energy regenerative suspension using PWM step-up chopper. The energy regenerative suspension has nonlinear characteristics with dead zone for low speed motion. Hence the energy is not regenerated nor has it damping force. In order to overcome this problem, a step-up chopper is introduced between the actuator and the charging circuit. This chopper is controlled by velocity-dependent PWM signal to improve the damping characteristics and the efficiency of the regenerative suspension. The suspension system changes its height according to the carrier load. Hence linear AC motor is used to the isolation actuator. A simple experiment was performed and the results showed better performance than the standard regenerative suspension. The system is planned to be modified incorporating active control. The fundamental idea and the configuration are introduced.
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Mesquita, L. C. S., and S. J. Harrison. "Non-Isothermal, Flat-Plate Liquid-Desiccant Regenerators: A Numerical Study." In ASME 2005 International Solar Energy Conference. ASMEDC, 2005. http://dx.doi.org/10.1115/isec2005-76173.

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Solar energy can play a significant role in increasing the environmental sustainability of air-conditioning systems and a number of thermally-driven solar air-conditioning technologies are available. Among these technologies, liquid-desiccant systems have the potential to operate efficiently at lower regeneration temperatures, allowing for better use of flat plate collectors. In these systems, air to be conditioned is dehumidified through direct contact with a desiccant solution. This solution is then heated at the regenerator and water is evaporated into a scavenging air stream. This paper presents an analysis of the heat and mass transfer in a parallel-plate internally-heated liquid-desiccant regenerator. Using a finite-difference technique, a numerical analysis was performed to solve the species and energy equations. The influence of regenerator hot water parameters (temperature and mass flow), and solar collector efficiency on regeneration capacity and specific energy consumption was evaluated.
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Ghorbanpour, Amin, and Hanz Richter. "Energy-Optimal, Direct-Phase Control of Brushless Motors for Robotic Drives." In ASME 2020 Dynamic Systems and Control Conference. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/dscc2020-3200.

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Abstract In this work, simultaneous energy regeneration and motion control for robot manipulators with brushless direct current (BLDC) motors is considered. All joints of the robot are connected to regenerative drives powered from a single ultra-capacitor. A new voltage-based control method is developed to individually command each phase of the BLDC motor. Three independent regenerative drives are interconnected in a wye configuration, and each drives a phase of the motor. The objective is to determine the control inputs for each drive to minimize energy consumption from the ultra-capacitor for a given motion task. To this end, the problem is formulated as constrained quadratic optimization problem that gives the control inputs based on the desired torque generated by a virtual controller. An experimental evaluation is performed using a pendulum actuated by a BLDC motor. It is shown that the suggested control method can accomplish the motion task and it is capable of energy regeneration. The results show a reduction of about 40% in energy consumption for the condition of the study, relative to non-regenerative case.
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Reports on the topic "Regenerativ energy"

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Stinton, D. P., M. A. Janney, T. M. Yonushonis, A. C. McDonald, P. D. Wiczynski, and W. C. Haberkamp. Direct-energy-regenerated particulate trap technology. Final report. Office of Scientific and Technical Information (OSTI), December 1996. http://dx.doi.org/10.2172/412261.

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Gangwal, Santosh, and Andrew Muto. Regenerative Carbonate-Based Thermochemical Energy Storage System for Concentrating Solar Power. Office of Scientific and Technical Information (OSTI), August 2017. http://dx.doi.org/10.2172/1377395.

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Pag, F., M. Jesper, U. Jordan, W. Gruber-Glatzl, and J. Fluch. Reference applications for renewable heat. IEA SHC Task 64, January 2021. http://dx.doi.org/10.18777/ieashc-task64-2021-0002.

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There is a high degree of freedom and flexibility in the way to integrate renewable process heat in industrial processes. Nearly in every industrial or commercial application various heat sinks can be found, which are suitable to be supplied by renewable heat, e.g. from solar thermal, heat pumps, biomass or others. But in contrast to conventional fossil fuel powered heating systems, most renewable heating technologies are more sensitive to the requirements defined by the specific demand of the industrial company. Fossil fuel-based systems benefit from their indifference to process temperatures in terms of energy efficiency, their flexibility with respect to part-load as well as on-off operation, and the fuel as a (unlimited) chemical storage. In contrast, the required temperature and the temporal course of the heat demand over the year determine whether a certain regenerative heat generator is technically feasible at all or at least significantly influence parameters like efficiency or coverage rate.
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Akbari, Hashen, and Leo Rainer. Measured Energy Savings from the Application of Reflective Roofs in 3 AT and T Regeneration Buildings. Office of Scientific and Technical Information (OSTI), November 2000. http://dx.doi.org/10.2172/791840.

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Salmon, Sonja, Alan House, Kun Liu, Reynolds Frimpong, Kunlei Liu, Charles Freeman, Greg Whyatt, Jonathan Slater, and David Fitzgerald. Low-Energy Solvents For Carbon Dioxide Capture Enabled By A Combination Of Enzymes And Vacuum Regeneration. Office of Scientific and Technical Information (OSTI), August 2015. http://dx.doi.org/10.2172/1222645.

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