scholarly journals Fast-response/stable Ni–Bi cells achieved using hollowed-out Bi@carbon nanospheres: a preferred electricity storage choice to couple with clean energy harvesting

2020 ◽  
Vol 4 (4) ◽  
pp. 1249-1255 ◽  
Author(s):  
Jiajia Yao ◽  
Linpo Li ◽  
Ning Li ◽  
Jian Jiang ◽  
Yanlong Wang ◽  
...  
Keyword(s):  
Energy Harvesting ◽  
Clean Energy ◽  
Fast Response ◽  
Green Energy ◽  
Carbon Nanospheres ◽  
Electricity Storage

Fast-response/stable Ni–Bi cells achieved by hollowing-out Bi@carbon nanospheres are an improved electricity storage choice to couple with green energy harvesting.

scholarly journals Key Performance Indicators for an Energy Community Based on Sustainable Technologies

2021 ◽  
Vol 13 (16) ◽  
pp. 8789
Author(s):  
Giovanni Bianco ◽  
Barbara Bonvini ◽  
Stefano Bracco ◽  
Federico Delfino ◽  
Paola Laiolo ◽  
...  
Keyword(s):  
Performance Indicators ◽  
Urban Areas ◽  
High Performance ◽  
Power Plants ◽  
New Technologies ◽  
Storage Systems ◽  
Clean Energy ◽  
Key Performance Indicators ◽  
Energy Performance ◽  
Green Energy

As reported in the “Clean energy for all Europeans package” set by the EU, a sustainable transition from fossil fuels towards cleaner energy is necessary to improve the quality of life of citizens and the livability in cities. The exploitation of renewable sources, the improvement of energy performance in buildings and the need for cutting-edge national energy and climate plans represent important and urgent topics to be faced in order to implement the sustainability concept in urban areas. In addition, the spread of polygeneration microgrids and the recent development of energy communities enable a massive installation of renewable power plants, high-performance small-size cogeneration units, and electrical storage systems; moreover, properly designed local energy production systems make it possible to optimize the exploitation of green energy sources and reduce both energy supply costs and emissions. In the present paper, a set of key performance indicators is introduced in order to evaluate and compare different energy communities both from a technical and environmental point of view. The proposed methodology was used in order to assess and compare two sites characterized by the presence of sustainable energy infrastructures: the Savona Campus of the University of Genoa in Italy, where a polygeneration microgrid has been in operation since 2014 and new technologies will be installed in the near future, and the SPEED2030 District, an urban area near the Campus where renewable energy power plants (solar and wind), cogeneration units fed by hydrogen and storage systems are planned to be installed.

Energy Transition and Post-COVID World

2021 ◽  
Vol 65 (6) ◽  
pp. 79-85
Author(s):  
E. Telegina
Keyword(s):  
Social Transformation ◽  
Continuous Process ◽  
Energy Resource ◽  
Energy Transition ◽  
Clean Energy ◽  
Green Energy ◽  
Digital Transformation ◽  
Transport Infrastructure ◽  
Electricity Production ◽  
Digital World

Received 13.01.2021. The coronavirus pandemic has accelerated global economic, technological and social transformation, including the energy sector, and has given the impetus to energy transition from organic fuels to clean energy sources. Though oil will remain an important energy resource in the global energy balance, in the long run renewables will become the leading energy. The European Union and China are the leaders in implementation of energy transition strategies from fossil to clean energy. The transformation in the energy market has affected dramatically the relations between producers and consumers, who now actively determine the consumption trends (for example, green energy, electric vehicles, etc.). Distributed generation and blockchain in power industry enable the consumers to play an active part in the electricity production and distribution chains. Digital transformation and climate agenda are changing the structure of energy business from vertically integrated companies to knowledge-intensive networks. Investors almost unanimously vote for renewable energy. The largest oil and gas companies change their long-term strategies and transform into energy holdings with the prevailing share of renewables in the business structure. Hydrogen attracts particular attention as a promising energy source. The EU plans to develop hydrogen transport infrastructure. For its part, Russia has the ability to supply hydrogen to the European market through the existing gas pipelines. Coronacrisis accelerated the development of online services, artificial intelligence, and distant work. Education and telemedicine received a powerful impetus for further development. Еducation becomes continuous process in the digital world. New educational ecosystems in which skills and competencies are worked out on an interdisciplinary basis are formed. Digital transformation meets the expectations of the generation Z, which in the coming decades will become economically active and will dominate in social and economic agenda. Digitalization, adaptive nature-like technologies, environmentally friendly energy resources, flexible horizontal network between market participants are already a post-COVID reality.

scholarly journals French Energy Sector in Search for Optimal Model

2019 ◽  
Vol 12 (5) ◽  
pp. 156-171
Author(s):  
A. V. Zimakov
Keyword(s):  
Power Generation ◽  
Nuclear Power ◽  
Nuclear Reactors ◽  
Current Model ◽  
Energy Transition ◽  
Clean Energy ◽  
Green Energy ◽  
Electricity Production ◽  
Low Carbon ◽  
The Eu

Clean energy transition is one of major transformation processes in the EU. There are different approaches among EU countries to decarbonization of their energy systems. The article deals with clean energy transition in France with the emphasis on power generation. While this transformation process is in line with similar developments in the EU, the Franch case has its distinct nature due to nuclear power domination in electricity production there. It represents a challenge for the current model as the transition is linked to a sharp drop of nuclear share in the power mix. It is important to understand the trajectory of further clean energy transition in France and its ultimate model. The article reviews the historical roots of the current model (which stems from Messmer plan of the 1970-es) and its development over years, as well as assesses its drawbacks and merits in order to outline possible future prospects. The conclusion is that the desired reduction of nuclear energy is linked not solely to greening process but has a complex of reasons, the ageing of nuclear reactors being one of them. Nuclear power remains an important low-carbon technology allowing France to achieve carbon neutrality by 2050. A desired future energy model in France can be understood based on the analysis of new legislation and government action plans. The targeted model is expected to balance of nuclear and green energy in the generation mix in 50% to 40% proportion by 2035, with the rest left to gas power generation. Being pragmatic, French government aims at partial nuclear reactors shut down provided that this will not lead to the rise of GHG emissions, energy market distortions, or electricity price hikes. The balanced French model is believed to be a softer and socially comfortable option of low-carbon model.

Imperceptible Energy Harvesting Device and Biomedical Sensor based on Ultraflexible Ferroelectric Transducers and Organic Diodes

2020 ◽  
Author(s):  
Andreas Petritz ◽  
Esther Karner-Petritz ◽  
T. Uemura ◽  
Philipp Schäffner ◽  
Teppei Araki ◽  
...  
Keyword(s):  
Energy Harvesting ◽  
Flexible Electronics ◽  
Mechanical Stability ◽  
Blood Pressure Monitoring ◽  
Fast Response ◽  
Essential Elements ◽  
Ferroelectric Polymer ◽  
Organic Diodes ◽  
Harvesting Systems ◽  
First Time

Abstract Energy autonomy and conformability are essential elements in the next generation of wearable and flexible electronics for healthcare, robotics and cyber-physical systems. This study presents ferroelectric polymer transducers and organic diodes for imperceptible sensing and energy harvesting systems, which, for the first time, are integrated on ultrathin (1-µm) substrates, thus imparting them with unprecedented flexibility. Simulations show that the sensitivity of ultraflexible ferroelectric polymer transducers (UFPTs) is enhanced dramatically using an ultrathin substrate, which allows the mounting on 3D-shaped objects and the stacking in multiple layers. Indeed, UFPTs have superior sensitivity to strain and pressure, fast response and excellent mechanical stability, thus forming imperceptible wireless e-health patches for precise pulse and blood pressure monitoring. For harvesting biomechanical energy, UFPTs are combined with rectifiers based on the world’s first ultraflexible organic diodes thus comprising an imperceptible, 2.5 µm thin, energy harvesting device with an excellent peak power density of 3 mW⋅cm− 3.

scholarly journals Scalable thermoelectric fibers for multifunctional textile-electronics

2020 ◽  
Vol 11 (1) ◽  
Author(s):  
Tianpeng Ding ◽  
Kwok Hoe Chan ◽  
Yi Zhou ◽  
Xiao-Qiao Wang ◽  
Yin Cheng ◽  
...  
Keyword(s):  
Energy Harvesting ◽  
Green Energy ◽  
Process Efficiency ◽  
Robotic Arm ◽  
Practical Applications ◽  
Flexible Devices ◽  
Fiber Fabrication ◽  
Mechanical Compliance ◽  
Limited Scale ◽  
High Scalability

AbstractTextile electronics are poised to revolutionize future wearable applications due to their wearing comfort and programmable nature. Many promising thermoelectric wearables have been extensively investigated for green energy harvesting and pervasive sensors connectivity. However, the practical applications of the TE textile are still hindered by the current laborious p/n junctions assembly of limited scale and mechanical compliance. Here we develop a gelation extrusion strategy that demonstrates the viability of digitalized manufacturing of continuous p/n TE fibers at high scalability and process efficiency. With such alternating p/n-type TE fibers, multifunctional textiles are successfully woven to realize energy harvesting on curved surface, multi-pixel touch panel for writing and communication. Moreover, modularized TE garments are worn on a robotic arm to fulfill diverse active and localized tasks. Such scalable TE fiber fabrication not only brings new inspiration for flexible devices, but also sets the stage for a wide implementation of multifunctional textile-electronics.

scholarly journals Study on an Energy-Harvesting Magnetorheological Damper System in Parallel Configuration for Lightweight Battery-Operated Automobiles

Vibration ◽  
2020 ◽  
Vol 3 (3) ◽  
pp. 162-173
Author(s):  
Urvesh Kabariya ◽  
Sagil James
Keyword(s):  
Energy Harvesting ◽  
Vibrational Energy ◽  
Clean Energy ◽  
Suspension System ◽  
Comfort Level ◽  
Magnetorheological Damper ◽  
Damping Force ◽  
Secondary Systems ◽  
Parallel Configuration ◽  
Energy Dissipated

Suspension dampers are extremely critical for modern automobiles for absorbing vibrational energy while in operation. For years now, the viscous passive damper has been dominant. However, there is a constant need to improve and revolutionize the damping technology to adapt to modern road conditions and for better performance. Controlled shock absorbers capable of adapting to uneven road profiles are required to meet this challenge and enhance the passenger comfort level. Among the many types of modern damping solutions, magnetorheological (MR) dampers have gained prominence, considering their damping force control capability, fast adjustable response, and low energy consumption. Advancements in energy-harvesting technologies allow for the regeneration of a portion of energy dissipated in automotive dampers. While the amount of regenerated energy is often insufficient for regular automobiles, it could prove to be vital to support lightweight battery-operated vehicles. In battery-operated vehicles, this regenerated energy can be used for powering several secondary systems, including lighting, heating, air conditioning, and so on. This research focuses on developing a hybrid smart suspension system that combines the MR damping technology along with an electromagnetic induction (EMI)-based energy-harvesting system for applications in lightweight battery-operated vehicles. The research involves the extensive designing, numerical simulation, fabrication, and testing of the proposed smart suspension system. The development of the proposed damping system would help advance the harvesting of clean energy and enhance the performance and affordability of future battery-operated vehicles.

scholarly journals Compact Wearable Meta Materials Antennas for Energy Harvesting Systems, Medical and IOT Systems

Electronics ◽  
2019 ◽  
Vol 8 (11) ◽  
pp. 1340 ◽  
Author(s):  
Albert Sabban
Keyword(s):  
Energy Harvesting ◽  
High Efficiency ◽  
Dynamic Range ◽  
Green Energy ◽  
Ring Resonators ◽  
Green Technologies ◽  
Continuous Growth ◽  
Harvesting Systems ◽  
Low Efficiency ◽  
Line Design

Demand for green technologies and green energy is in continuous growth in the last decade. Compact efficient radiators are very important for energy harvesting portable systems. Small antennas have low efficiency. The efficiency of communication and energy harvesting systems may increase by using efficient passive and active antennas. The system dynamic range may be improved by connecting amplifiers to the printed antenna feed line. Design, design considerations, computed and measured results of wearable meta-materials antennas with high efficiency for energy harvesting applications are presented in this paper. The antennas electrical parameters on human body were analyzed by using commercial full-wave software. The wearable antennas are compact and flexible and are 1.6 mm thick. The directivity and gain of the antennas with Split-ring resonators (SRR), is higher by 2 dB to 3 dB than the antennas without SRR. The resonant frequency of the antennas without SRR is higher by 5% to 10% than the antennas with SRR.

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