Results 41 to 50 of about 198,339 (326)
Low-cost solar tracking system [PDF]
, 1975 Smaller heat-collector is moved to stay in focus with the sun, instead of moving reflector. Tracking can be controlled by storing data of predicted solar positions or by applying conventional sun-sensing devices to follow solar ...
Miller, C. G., Stephens, J. B.
core +1 more source
Advanced Functional Materials, EarlyView.Covalent organic frameworks (COFs) with metals have been recognized as versatile platforms for photocatalytic CO2 reduction (CO2PRR). Herein, an overview of metal integration strategies for COFs is systematically summarized. Regulatory mechanisms and structure–activity relationships between metal integration and COF‐based CO2PRR are emphasized.
Jie He +5 more
wiley +1 more source
Development of a closed and open loop solar tracker technology
Acta Scientiarum: Technology, 2017 Solar energy is among the renewable energy sources that received greater addition in installed capacity. However, it accounts for a small fraction of the energy matrix of most countries. Electric energy generation by solar systems can be improved through
Aurélio Gouvêa Melo +4 more
doaj +1 more source
Non-tracking solar energy collector system [PDF]
, 1978 A solar energy collector system characterized by an improved concentrator for directing incident rays of solar energy on parallel vacuum-jacketed receivers or absorbers is described.
Selcuk, M. K.
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Advanced Functional Materials, EarlyView.Liquid‐phase transmission electron microscopy enables direct observation of nucleation and growth processes in solution. This review is dedicated to the remembrance of Helmut Cölfen and highlights recent studies on complex materials—oxides, biominerals, organic–inorganic crystals—which were central to his research activity. It summarizes key milestones,
Charles Sidhoum +5 more
wiley +1 more source
Beyond the Edge: Charge‐Transfer Excitons in Organic Donor‐Acceptor Cocrystals
Advanced Functional Materials, EarlyView.Complex excitonic landscapes in acene–perfluoroacene cocrystals are unveiled by polarization‐resolved optical spectroscopy and many‐body theory. This systematic study of a prototypical model system for weakly interacting donor–acceptor compounds challenges common views of charge‐transfer excitons, providing a refined conceptual framework for ...
Sebastian Anhäuser +6 more
wiley +1 more source
International Journal for Research in Applied Science and Engineering TechnologyAbstract: The usage of solar panels to convert solar energy into electrical energy has gr own in recent years. The solar panel can be utilized as a huge solar system that is connected to the electrical grids or as a standalone system. The daily energy consumption of our planet is approximately 12 Terawatts, whereas the earth receives 84 Terawatts of ...
openaire +2 more sources
Dual axis Solar tracking PV system [PDF]
Politehnika, 2018 Photovoltaic cells are semiconductor diodes that consist of a pn-junction and convert Solar energy to electricity using the photovoltaic effect. There are several types of PV systems, such as fixed systems, single axis Solar tracking system and dual axis
Mateo Borčić, Igor Bonefačić
doaj
Al-Khawarizmi Engineering Journal, 2018 The present work presents design and implementation of an automated two-axis solar tracking system using local materials with minimum cost, light weight and reliable structure. The tracking system consists of two parts, mechanical units (fixed and moving
Saad Tami Hamidi +2 more
doaj +1 more source
Advanced Functional Materials, EarlyView.A reactive in situ solution complexation strategy reconstructs the surface of 2.0 eV ultra‐wide‐bandgap perovskites via proton transfer. This chemical modulation eliminates metallic defects and induces a degenerate‐like n‐type surface, establishing an Ohmic tunneling contact.
Saemon Yoon +11 more
wiley +1 more source