"An experimental investigation of a roof-mounted horizontal-axis wind turbine in an idealized urban environment"

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Strategic PV expansion and its impact on regional electricity self-sufficiency: Case study of Switzerland

Alina Ursula Rosa Walch

Solar photovoltaics (PV) will play an important role in decarbonising the energy system. To date, most assessments of PV transition pathways focus on least-cost aspects, without neither considering the time needed to achieve a substantial PV deployment, no ...

ELSEVIER SCI LTD2023

Photovoltaics at multi-terawatt scale: Waiting is not an option

Sophia Haussener, Stefaan De Wolf

A major renewable-energy milestone occurred in 2022: Photovoltaics (PV) exceeded a global installed capacity of 1 TWdc. But despite considerable growth and cost reduction over time, PV is still a small part of global electricity generation (4 to 5% for 202 ...

American Association for the Advancement of Science2023

Power Production and Blade Fatigue of a Wind Turbine Array Subjected to Active Yaw Control

Fernando Porté Agel, Mou Lin

This study investigated the power production and blade fatigue of a three-turbine array subjected to active yaw control (AYC) in full-wake and partial-wake configurations. A framework of a two-way coupled large eddy simulation (LES) and an aeroelastic blad ...

MDPI2023

Alternative energy supply approach for industrial complexes and district heating networks based on biomass integrated gasification

François Maréchal, Daniel Alexander Florez Orrego, Meire Ellen Gorete Ribeiro Domingos

In this work, a systematic approach combining different energy solutions and the time-varying energy demands is used to identify the operating conditions and arrangements for industrial complexes. A kraft pulp mill integrated to an urban district heating n ...

Universidad de Las Palmas de Gran Canaria2023

An experimental investigation of a roof-mounted horizontal-axis wind turbine in an idealized urban environment

Fernando Porté Agel, Arslan Salim Dar, Guillem Armengol Barcos

Wind-tunnel experiments are performed to investigate the effect of minor modifications to the roof edge shape on the power performance and wake characteristics of a horizontal-axis wind turbine sited on a cube-shaped building. Three roof edge shapes are co ...

Pergamon-Elsevier Science Ltd2022

Greenberg's Force Prediction for Vertical-Axis Wind Turbine Blades

David Yefim Bensason, Karen Ann J Mulleners, Sébastien Le Fouest

AMER INST AERONAUTICS ASTRONAUTICS2022

The Role of Organic Promoters in the Electroreduction of Carbon Dioxide

Paul Joseph Dyson, Dmitry Vasilyev

The electrochemical reduction of carbon dioxide (CO2RR) currently attracts considerable attention as a way to make fuels and value-added products from CO2 using renewable energy. Much effort has been devoted to developing efficient electrode materials for ...

AMER CHEMICAL SOC2021

Electrochemical systems for hydrogen fuel cell and battery electric vehicle infrastructure

Yorick Ligen

Thermodynamics and heat engines are the core disciplines which enabled the development of the thermo-industrial society during the 20th century. Liquid hydrocarbon fuels are one of the easiest and most convenient solutions offered by the thermophysical con ...

EPFL2020

Time-adaptive wind turbine model for an LES framework

Michael Lehning, Marc Parlange, Varun Sharma, Marc Calaf Bracons

Most large-eddy simulation studies related to wind energy have been carried out either by using a fixed pressure gradient to ensure that mean wind direction is perpendicular to the wind turbine rotor disk or by forcing the flow with a geostrophic wind and ...

Wiley-Blackwell2015

Large Eddy Simulation study of a fully developed thermal wind-turbine array boundary layer

Marc Parlange, Marc Calaf Bracons

When wind turbines are arranged in large wind farms, their efficiency decreases significantly due to wake effects and to complex turbulence interactions with the atmospheric boundary layer (ABL) [1]. For large wind farms whose length exceeds the ABL height ...

2011