scholarly journals Solar energy conversion using first row d-block metal coordination compound sensitizers and redox mediators

2022 ◽  
Author(s):  
Catherine E. Housecroft ◽  
Edwin C Constable
Keyword(s):  
Renewable Energy ◽  
Solar Energy ◽  
Energy Conversion ◽  
Coordination Compound ◽  
Metal Coordination ◽  
Redox Mediators ◽  
Global Energy ◽  
Energy Demands ◽  
The Earth ◽  
Ultimate Source

Abstract: The use of renewable energy is essential for the future of the Earth, and solar photons are the ultimate source of energy to satisfy the ever-increasing global energy demands....

MOF-derived PtCo/Co3O4 nanocomposites in carbonaceous matrices as high-performance ORR electrocatalysts synthesized via Laser Ablation techniques

2021 ◽  
Author(s):  
Erick Leonar Ribeiro ◽  
Elijah M Davis ◽  
Mahshid Mokhtarnejad ◽  
Sheng Hu ◽  
Dibyendu Mukherjee ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Laser Ablation ◽  
Energy Conversion ◽  
High Performance ◽  
Sustainable Energy ◽  
Ablation Techniques ◽  
Global Energy ◽  
Cell Technology ◽  
Energy Demands ◽  
Rational Development

Rapidly expanding global energy demands due to fast-paced human-technology interfaces have propelled fuel cell technology as a sustainable energy-conversion alternative. Nonetheless, the rational development of such technology demands the engineering...

Space Charge Enhanced Ion Transport in Heterogeneous Polyelectrolyte/Alumina Nanochannel Membranes for High-Performance Osmotic Energy Conversion

2021 ◽  
Author(s):  
Chen-Wei Chang ◽  
Chien-Wei Chu ◽  
Yen-Shao Su ◽  
Li-Hsien Yeh
Keyword(s):  
Ion Transport ◽  
Space Charge ◽  
Energy Conversion ◽  
High Performance ◽  
Salinity Gradient ◽  
Clean Energy ◽  
Energy Resources ◽  
Global Energy ◽  
Energy Demands ◽  
Selective Membrane

Capturing osmotic energy from a salinity gradient through an ion-selective membrane is regarded as one of the renewable clean energy resources to solve the increasing global energy demands. However, suffering...

scholarly journals TECHNO-ECONOMIC ANALYSIS OF AN OFF-GRID HYBRID ENERGY SYSTEM WITH HOMER PRO

2021 ◽  
Vol 5 (3) ◽  
pp. 56-61
Author(s):  
Ahmet Erhan AKAN
Keyword(s):  
Renewable Energy ◽  
Solar Energy ◽  
Economic Analysis ◽  
Energy Conversion ◽  
Renewable Energy Sources ◽  
Lithium Ion ◽  
Energy Sources ◽  
Renewable Energy Resources ◽  
Energy Potential ◽  
Economic Point

The decrease in fossil-based energy sources and increasing environmental problems increase the tendency to renewable energy sources day by day. The potential of renewable energy sources differs according to the region where the energy will be produced. For this reason, it is crucial to conduct a good feasibility study that deals with the selected systems from a technical and economic point of view before making an investment decision on energy conversion systems based on renewable energy sources. In this study, the most suitable equipment and capacities were investigated by examining the techno-economic analysis of a hybrid system created with wind-solar renewable energies for a detached house, which is considered off-grid, in a rural area of Tekirdağ province (40o58.7ı N, 27o30.7ı E). Investigations were carried out using the HOMER Pro (Hybrid Optimization Model for Electric Renewable) program. The wind and solar energy potential of Tekirdağ province were obtained from the NASA renewable energy resources database added to the HOMER Pro program. The daily electricity requirement of the sample house was chosen as 11.27 kWh, and the current peak electrical load was chosen as 2.39 kW. A wind turbine is connected to the AC busbars, solar collectors and battery group connected to the DC busbars, and a converter that converts energy between AC and DC busbars in the energy conversion system. In order to determine the optimum capacities of the system elements, 27486 different simulations were performed by HOMER Pro. The selection of the most suitable system among these was determined according to the lowest net present cost (NPC) value. In addition, the energy production capacities that will occur in the case of different wind speeds were also investigated. Accordingly, the system to be installed with a solar panel with a capacity of 6.25 kW, PV-MPPT with a capacity of 1 kW, 2 wind turbines with a capacity of 1 kW, 8 Lithium-ion batteries with a capacity of 6V-167 Ah, and a converter with a capacity of 2.5 kW has been determined will generate electrical energy of 5433 kWh per year. In addition, it has been determined that 61.8% of this produced energy will be obtained from solar energy and 38.2% from wind energy, and the simple payback period of the investment will be 14 years. It is thought that this study will provide valuable information to researchers and investors.

Nanomaterial Catalysts for Organic Photoredox Catalysis-Mechanistic Perspective

Nanoscale ◽  
2021 ◽  
Author(s):  
Qiushi Hu ◽  
Xuemeng Yu ◽  
Shaokuan Gong ◽  
Xihan Chen
Keyword(s):  
Renewable Energy ◽  
Solar Energy ◽  
Energy Conversion ◽  
Solar Energy Conversion ◽  
Vital Role ◽  
Energy Industry ◽  
Photoredox Catalysis ◽  
Renewable Energy Industry

Solar energy conversion plays a vital role in the renewable energy industry. In recent years, photoredox organic transformation have been explored as an alternative way to use solar energy. The...

scholarly journals Solar Tracking using Arduino

2021 ◽  
Vol 9 (VI) ◽  
pp. 2038-2042
Author(s):  
Harshit Singh
Keyword(s):  
Solar Energy ◽  
Rural Areas ◽  
Carbon Emission ◽  
Renewable Energy Sources ◽  
Energy Sources ◽  
The Earth ◽  
Solar Tracking ◽  
The World ◽  
Ultimate Source ◽  
Arduino Microcontroller

Solar energy is one of the most popular renewable energy sources. In this era, every country is trying to push its boundaries for more efficient renewal energy source. Every nation is concerned to minimize their carbon emission especially the develop countries like USA, Europe, Japan etc. Energy is everyone’s need and clean source of energy is important for no pollution. Solar trackers has been gaining popularity all around the world because of its maximizing efficiency of solar energy. Solar trackers have simple mechanism and easy to operate. It is able to track the sun in the sky for maximum sunlight throughout day. Sun is an ultimate source of energy to the earth and also a green source of energy. It is important and can wisely use to solve our energy crisis. Solar trackers can be best alternative to this. The power generated by panels can be used for domestic works and the rest can be transferred to the grid for energy distribution. The hardware of this project can be implemented by using few components like LDR (Light Dependent Resistor),motor, Arduino microcontroller and battery. .There are so still many villages that do not get any electricity supply. This project help to provide electricity in rural areas.

scholarly journals Improving the Efficiency of Solar Photovoltaic Cell by Decreasing Surface Temperature

2019 ◽  
Vol 9 (2) ◽  
pp. 3235-3239
Keyword(s):  
Renewable Energy ◽  
Solar Energy ◽  
Energy Conversion ◽  
Electrical Energy ◽  
Photovoltaic Cell ◽  
Biomass Energy ◽  
Energy Resources ◽  
Air Cooling ◽  
Solar Photovoltaic ◽  
Renewable Energy Resources

Supply of energy is able to meet the increasing demand of today’s people, which is major causes faced by world. The shortage of power can be reduced by using renewable energy resources. There are many renewable energy resources like wind, tidal and biomass energy, solar energy. The mostsignificant form of renewable source is solar energy. It has undergone a research and development in the recent years and still it is developing. Solar photovoltaic cell is device used in solar energy conversion. It converts forthrightly electrical energy from the sunlight. The efficiency of PV cell is disturbed when rise in working temperature. Temperature on the panel is inversely proportional to the power generation. The main problem met by solar cell is temperature rise. Due to this temperature the energy conversion is low. By decreasing the temperature on the surface of PV panel to enhance the electric efficiency. So, in present-day different cooling methods have been projected and verified experimentally. Several techniques have been tried, mostly based on active water and air cooling, as these are simple techniques. The main objective of this system is to increase the solar panel efficiency using water cooling method of the panel gets cooled by exchange temperature.

scholarly journals Assessing the future prospects of solar energy conversion technologies in electronic applications

2018 ◽  
Vol 7 (4) ◽  
pp. 2149
Author(s):  
Dr Maha Abdul ameer Kadhim
Keyword(s):  
Renewable Energy ◽  
Solar Energy ◽  
Energy Conversion ◽  
Solar Energy Conversion ◽  
Electrical Energy ◽  
Future Prospects ◽  
The Future ◽  
Bulk Power ◽  
Conversion Technologies ◽  
Future Status

Solar energy has become one of the most important sources of renewable energy. This is evident in the fact that many organizations and individuals have resorted to renewable energy, without fear of depletion, without fear of the monthly costs of using fuel-based electricity.The study examined the mechanism of using solar energy and the mechanism of solar cells in converting sunlight into electricity in general, and thus allocating research in solar energy conversion technologies to electrical energy, and some systems of assessing of these technologies, in order to know the future status of the technology of converting solar energy, as well as to know the costs that these technologies must reach in order to be a candidate for bulk power.  

scholarly journals Oxygenic photosynthesis: translation to solar fuel technologies

2014 ◽  
Vol 83 (4) ◽  
pp. 423-440 ◽  
Author(s):  
Julian David Janna Olmos ◽  
Joanna Kargul
Keyword(s):  
Climate Change ◽  
Renewable Energy ◽  
Solar Energy ◽  
Energy Conversion ◽  
Solar Energy Conversion ◽  
High Energy ◽  
Solar Fuels ◽  
High Energy Density ◽  
Energy Crisis ◽  
Oxygenic Photosynthesis

Mitigation of man-made climate change, rapid depletion of readily available fossil fuel reserves and facing the growing energy demand that faces mankind in the near future drive the rapid development of economically viable, renewable energy production technologies. It is very likely that greenhouse gas emissions will lead to the significant climate change over the next fifty years. World energy consumption has doubled over the last twenty-five years, and is expected to double again in the next quarter of the 21st century. Our biosphere is at the verge of a severe energy crisis that can no longer be overlooked. Solar radiation represents the most abundant source of clean, renewable energy that is readily available for conversion to solar fuels. Developing clean technologies that utilize practically inexhaustible solar energy that reaches our planet and convert it into the high energy density solar fuels provides an attractive solution to resolving the global energy crisis that mankind faces in the not too distant future. Nature’s oxygenic photosynthesis is the most fundamental process that has sustained life on Earth for more than 3.5 billion years through conversion of solar energy into energy of chemical bonds captured in biomass, food and fossil fuels. It is this process that has led to evolution of various forms of life as we know them today. Recent advances in imitating the natural process of photosynthesis by developing biohybrid and synthetic “artificial leaves” capable of solar energy conversion into clean fuels and other high value products, as well as advances in the mechanistic and structural aspects of the natural solar energy converters, photosystem I and photosystem II, allow to address the main challenges: how to maximize solar-to-fuel conversion efficiency, and most importantly: how to store the energy efficiently and use it without significant losses. Last but not least, the question of how to make the process of solar energy conversion into fuel not only efficient but also cost effective, therefore attractive to the consumer, should be properly addressed.

scholarly journals Tribological design constraints of marine renewable energy systems

2010 ◽  
Vol 368 (1929) ◽  
pp. 4807-4827 ◽  
Author(s):  
Robert J. K. Wood ◽  
AbuBakr S. Bahaj ◽  
Stephen R. Turnock ◽  
Ling Wang ◽  
Martin Evans
Keyword(s):  
Renewable Energy ◽  
Energy Conversion ◽  
Energy Systems ◽  
Offshore Wind ◽  
Marine Renewable Energy ◽  
Energy Demands ◽  
Marine Energy ◽  
Energy Conversion Systems ◽  
Tidal Streams ◽  
Conversion Technologies

Against the backdrop of increasing energy demands, the threat of climate change and dwindling fuel reserves, finding reliable, diverse, sustainable/renewable, affordable energy resources has become a priority for many countries. Marine energy conversion systems are at the forefront of providing such a resource. Most marine renewable energy conversion systems require tribological components to convert wind or tidal streams to rotational motion for generating electricity while wave machines typically use oscillating hinge or piston within cylinder geometries to promote reciprocating linear motion. This paper looks at the tribology of three green marine energy systems, offshore wind, tidal and wave machines. Areas covered include lubrication and contamination, bearing and gearbox issues, biofouling, cavitation erosion, tribocorrosion, condition monitoring as well as design trends and loading conditions associated with tribological components. Current research thrusts are highlighted along with areas needing research as well as addressing present-day issues related to the tribology of offshore energy conversion technologies.

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