Results 41 to 50 of about 1,754 (165)

Optimizing multi-objective hybrid energy systems with pumped hydro storage for enhanced stability and efficiency in renewable energy integration

Engineering Science and Technology, an International Journal
Renewable energy sources include the intermittent nature, which is a vital challenge that causes considerable wind and solar energy losses. To address this challenge, this paper introduces a new approach for the optimal multi-objective distribution of a ...
Junxian Li, Jiaxin Yuan, Xuxin Yue
doaj   +1 more source

Electrolyzer Sizing and Techno‐Economic Assessment of Small‐Hydropower‐Based Green Hydrogen Using 3 Years of Hourly Generation Data

Energy Science &Engineering, EarlyView.
Three years (26,280 h) of measured Miryang Dam hydropower data were used to screen 300–1200 kW PEM electrolyzer capacities. A 600 kW unit provided the equal‐weight technical balance between hydropower capture (84.71%) and electrolyzer utilization (86.25%), whereas the planned 1 MW design captured 98.11% of available renewable energy but operated at a ...
Yonghae Jang, Yosoon Choi
wiley   +1 more source

Remote Sensing for Irrigation Water Management—The State of the Art and Prospects for Near‐Future Operations

Irrigation and Drainage, EarlyView.
ABSTRACT A recent UN report describes many regions as facing ‘water bankruptcy,’ a condition in which available water resources can no longer meet existing demands. In practice, this means irrigation will likely bear the greatest burden of future water‐use reductions, a complicated and fraught decision to make given its critical role in food security ...
Wim G. M. Bastiaanssen, Chris Perry, Royce Dalby, Yasir Mohamed, Xueliang Cai, Poolad Karimi, IJsbrand de Jong, Pasquale Steduto, Marat Beksultanov, Christopher C. M. Neale, David Molden, Waqas Awan, Laarousi Mohamed, Jippe Hoogeveen, Jeff Davids, Nutchanart Sriwongsitanon, P. S. Rao, Roula Bachour, Palitha Bandara, Sophea Chhim, Richard Evans, Tom Lahad, D. Nagesh Kumar, Zakaria Adawy, Devendra Singh Bundela, Kawa Hakzi, Isaya Kisekka, Nicolas Puelma, Alejandro A. Pannunzio, Benjamin Koetz, Mukhiddin Ibragimov   +30 more
wiley   +1 more source

Transforming Agricultural Water Management for Healthy People and Planet: Thinking Beyond Water

Irrigation and Drainage, EarlyView.
ABSTRACT This paper develops the concept of Thinking Beyond Water, a transdisciplinary paradigm that reframes agricultural water management (AWM) as a systems catalyst for planetary health, equity, justice and resilience. Moving beyond conventional irrigation‐centric models, we reimagine AWM through integrative frameworks such as the planetary ...
Tafadzwanashe Mabhaudhi, Cuthbert Taguta, Luxon Nhamo, Sylvester Mpandeli, Aidan Senzanje, Kaveh Madani, Tinashe Lindel Dirwai   +6 more
wiley   +1 more source

Cononsolvency‐Assisted Fabrication of Hydrogels and Microgels With Tunable Porosity, Diffusivity and Stiffness

Macromolecular Rapid Communications, EarlyView.
The cononsolvency of poly(dimethyl acrylamide‐co‐hydroxyethyl acrylamide) copolymers in water‐acetonitrile mixtures enables the synthesis of hydrogels with finely tuned porosity. Optimized for droplet‐based microfluidics, this approach facilitates the fabrication of porous microgels with tunable mechanical and diffusion properties, offering precise ...
Maria I. Pieper, Daniel D. Stöbener, Bernhard Häßel, Richard Hoogenboom, Andrij Pich   +4 more
wiley   +1 more source

An Elasto–Plastic Hydro–Mechanical Model for Analyzing the Swelling Behavior of Heterogeneous Clay–Sulfate Rocks

International Journal for Numerical and Analytical Methods in Geomechanics, EarlyView.
ABSTRACT Swelling of clay‐sulfate rocks is a concern in geotechnical engineering that can damage infrastructure. In the historic town of Staufen in southwest Germany, geothermal drilling into a swellable anhydrite‐bearing clay formation resulted in water inflow and subsequent swelling, triggering ground heave and damage to more than 250 houses.
Reza Mahmoudi Kouhi, Reza Taherdangkoo, Thomas Nagel, Faramarz Doulati Ardejani, Christoph Butscher   +4 more
wiley   +1 more source

The Path Towards Decarbonization: The Role of Hydropower in the Generation Mix

Energies
The evolution of the generation mix towards deep decarbonization poses pressing questions about the role of hydropower and its possible share in the future mix.
Fabio Massimo Gatta, Alberto Geri, Stefano Lauria, Marco Maccioni, Ludovico Nati   +4 more
doaj   +1 more source

Large-Scale Pumped Thermal Electricity Storages—Converting Energy Using Shallow Lined Rock Caverns, Carbon Dioxide and Underground Pumped-Hydro

Applied Sciences, 2019
A fast-paced energy transition needs a higher penetration of renewables, of heating and cooling in the worldwide energy mix. With three novelties 1-of using shallow high-pressure LRC (Lined Rock Cavern) excavated close to storage needs, 2-of using a slow-
Pascal Lalanne, Paul Byrne
doaj   +1 more source

Hydro‐Mechanical Modelling of Gas Migration in Bentonite: Formulation and Laboratory‐Scale Validation

International Journal for Numerical and Analytical Methods in Geomechanics, EarlyView.
ABSTRACT Gas generation and migration in bentonite buffer materials are critical processes affecting the performance of deep geological repositories for radioactive waste. This study presents a new hydro‐mechanical formulation for simulating gas migration in saturated, compacted bentonite, with particular emphasis on the role of non‐uniform stress ...
Desmond Talamwin Sunkpal, Mamadou Fall
wiley   +1 more source

Multiobjective Mid-Term Scheduling of the Hydro–Photovoltaic–Pumped Storage System Considering Uncertainties of Natural Water Inflow and Photovoltaic

International Transactions on Electrical Energy Systems
This paper proposes a multiobjective medium-term optimal scheduling model of the cascade hydro–photovoltaic (PV)–pumped storage system to increase the renewable energy accommodation capacity of the system. The uncertainties of natural water inflow and PV
Zhaoguo Liu, Chuan He, Jing Tan, Guicen Dong   +3 more
doaj   +1 more source