Results 1 to 10 of about 25,017 (50)

Wind tunnel experimental study on the aerodynamic characteristics of straight-bladed vertical axis wind turbine

open access: yesInternational Journal of Sustainable Energy
To investigate the effect of structural parameters on the aerodynamic characteristics of a Straight-Bladed Vertical Axis Wind Turbine (SB-VAWT), a 4-bladed SB-VAWT without an intermediate support shaft was designed to allow flexibility in changing ...
Huawu Zhang, Yihuai Hu, Wei Wang
doaj   +1 more source

Advancing sustainable energy: a systematic review of geothermal-powered district heating and cooling networks

open access: yesInternational Journal of Sustainable Energy
District heating and cooling networks distribute centrally generated heat through insulated pipes to multiple buildings, offering efficiency and reduced emissions, especially when using renewable heat sources.
Mukhtar A. Kassem, Andrea Moscariello
doaj   +1 more source

Influence of soil plasticity models on offshore wind turbine response

open access: yesWind Energy
While recent numerical modelling advances have enabled robust simulation of foundation hysteresis behaviour, uptake of these models has been limited in the offshore wind industry. This is partially due to modelling complexity and the unknown influence of
Gerard V. Ryan   +2 more
doaj   +1 more source

Supercritical CO2 Extraction of Fish Roe

open access: yesEnvironmental and Climate Technologies
Seafood is rich in omega-3 polyunsaturated fatty acids, and the good emulsifying properties of phospholipids make them suitable for use in the food, pharmaceutical and cosmetic industries.
Luksta Ilze, Mika Taras, Spalvins Kriss
doaj   +1 more source

MSW Management in Two Italian Mountainous Areas

open access: yesEnvironmental and Climate Technologies
Two case studies are reported in the present work. They regard municipal solid waste (MSW) management trends in the last decades in two Italian provinces selected to analyse some issues of waste management in mountainous areas.
Ragazzi Marco   +7 more
doaj   +1 more source

Numerical Evaluation of Harmful Consequences after Accidental Explosion at a Hydrogen Filling Station

open access: yesEnvironmental and Climate Technologies
This study aims to present computational technology that can be used to evaluate numerically the harmful environmental consequences caused by an accidental hydrogen release from failed high-pressure dispensing cylinders and its explosion at a vehicle ...
Skob Yurii   +4 more
doaj   +1 more source

Modelling of Undular Jump Characteristics

open access: yesEnvironmental and Climate Technologies
The article provides concise details about a hydraulic phenomenon known as the undular jump, that occurs under different conditions within different hydraulic constructions and can negatively influence on their operation and conditions.
Riabenko Oleksandr   +3 more
doaj   +1 more source

Use of Absorption Heat Pumps to Raise District Cooling Waste Heat Temperature for District Heating Supply in Tallinn: Technical and Economic Analysis

open access: yesEnvironmental and Climate Technologies
Decarbonisation of District Heating (DH) networks is essential to achieving the European Union’s climate goals. In this context, there is growing interest among DH stakeholders in the recovery and reuse of underutilised heat sources.
Kirs Tanel   +3 more
doaj   +1 more source

Mechanical Vapor Compression Desalination Process: Approaches to Optimize Compressor’s Consumption for Brine Valorization

open access: yesEnvironmental and Climate Technologies
Valorization of residual brines is one of the proposed solutions for minimizing the environmental effects of desalination plants, reducing the volume of wastewater generated at the time it increases both the freshwater production and the final ...
Calleja Cayón Pablo   +2 more
doaj   +1 more source

Brief communication: Real-time estimation of the optimal tip-speed ratio for controlling wind turbines with degraded blades [PDF]

open access: yesWind Energy Science
Rotor performance is adversely affected by the wear and tear of blade surfaces caused, for example, by rain, snow, icing, dirt, bugs and aging. Blade surface degradation changes the aerodynamic properties of the rotor, which in turn changes the optimal ...
D. Kumar   +4 more
doaj   +1 more source

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