Results 21 to 30 of about 1,192,898 (301)

Performance Analysis of a Zero-Energy Building Using Photovoltaics and Hydrogen Storage

Applied System Innovation, 2023
The exploitation of renewable energy sources in the building sector is a challenging aspect of achieving sustainability. The incorporation of a proper storage unit is a vital issue for managing properly renewable electricity production and so to avoid ...
Evangelos Bellos, Panagiotis Lykas, Christos Tzivanidis   +2 more
doaj   +1 more source

The Great Pretenders Among the ULX Class [PDF]

, 2017
The recent discoveries of pulsed X-ray emission from three ultraluminous X-ray (ULX) sources have finally enabled us to recognize a subclass within the ULX class: the great pretenders, neutron stars (NSs) that appear to emit X-ray radiation at isotropic ...
Cappallo, R., Christodoulou, D. M., Contopoulos, I., Kazanas, D., Laycock, S. G. T.   +4 more
core   +3 more sources

HYDROGEN DIPLOMACY AND GEOPOLITICS OF ENERGY TRANSFORMATION [PDF]

European Vector of Economic Development
The research is devoted to the issues of determining the EU’s long-term strategic choice in the context of energy transformation and studying the key elements of the EU’s hydrogen diplomacy.
Svitlana O. Fedulova, Kyrylo I. Reziapov
doaj   +1 more source

Climate action: Prospects of green hydrogen in Africa

Energy Reports, 2022
Africa is rich with an abundance of renewable energy sources that can help meeting the continent’s demand for electricity to promote economic growth and meet global targets for CO2 reduction.
Nour AbouSeada, Tarek M. Hatem
doaj   +1 more source

Feasibility Analysis of EV+X Storage to Support Power System Frequency [PDF]

E3S Web of Conferences, 2021
With the fast growth of renewable energy generation, the power system faces the challenge of low inertia. Lower system inertia makes it more challenging to keep the frequency stable, and the conventional frequency response mechanism is not capable of ...
Deng Zhe, Wang Zengping, Li Ran
doaj   +1 more source

Importance of graphitization catalyst deposition for the structure development of nanoscale hybrid amorphous/graphitic carbon

Carbon Trends
: Graphitic and mesoporous carbon materials combine two interesting features from an engineering point of view, allowing for fast heat and mass transport.
Pierre Cautaerts, Jan Gläsel, Felix Herold, Bastian J.M. Etzold   +3 more
doaj   +1 more source

Average Heating Rate of Hot Atmospheres in Distant Clusters by Radio AGN: Evidence for Continuous AGN Heating

, 2011
We examine atmospheric heating by radio active galactic nuclei (AGN) in distant X-ray clusters by cross correlating clusters selected from the 400 Square Degree (400SD) X-ray Cluster survey with radio sources in the NRAO VLA Sky Survey.
A. Vikhlinin, B. R. McNamara, Binney, Burenin, Bîrzan, Bîrzan, C.-J. Ma, Cavagnolo, Cavagnolo, Condon, Croft, Ebeling, Ebeling, Fanaroff, Forman, Forman, Fukazawa, Galametz, Gralla, Guo, Hart, Kaiser, Lal, Lin, Markevitch, Martini, Martini, Mathews, McCarthy, Mendygral, Narayan, Nulsen, Nulsen, Nulsen, P. E. J. Nulsen, R. Schaffer, Rafferty, Rafferty, Randall, Roychowdhury, Ruszkowski, Samuele, Sanderson, Saripalli, Sun, van Dokkum, Vikhlinin, Vikhlinin, Vikhlinin, Vikhlinin, Voit, Wise, Zakamska   +52 more
core   +1 more source

Logistic Decisions in the Installation of Offshore Wind Farms: A Conceptual Framework

Energies
Offshore wind energy has achieved significant reductions in its levelized cost of energy (LCoE) in the past decade, but still needs efficiency improvements.
Mario O. A. González, Gabriela Nascimento, Dylan Jones, Negar Akbari, Andressa Santiso, David Melo, Rafael Vasconcelos, Monalisa Godeiro, Luana Nogueira, Mariana Almeida, Pedro Oprime   +10 more
doaj   +1 more source

Power-to-Green Methanol via CO₂ Hydrogenation—A Concept Study including Oxyfuel Fluidized Bed Combustion of Biomass

Energies, 2021
A revolution of the global energy industry is without an alternative to solving the climate crisis. However, renewable energy sources typically show significant seasonal and daily fluctuations.
Simon Pratschner, Pavel Skopec, Jan Hrdlicka, Franz Winter   +3 more
doaj   +1 more source

Green Port Industry to Support the Offshore Wind Sector: A Proposal Framework

Energies
In recent years, offshore wind power has become increasingly relevant as a key alternative for contributing to the global economy’s decarbonization. Also, the accelerated technological development of the offshore wind turbine influences the increase in ...
Monalisa Godeiro, Mario González, Dylan Jones, Negar Akbari, Gabriela Nascimento, David Melo, Rafael Vasconcelos, Andressa Santiso, Luana Nogueira, Mariana Almeida, José Toledo   +10 more
doaj   +1 more source