Publications associées à Tour solaire (thermique)

Beam radiation penetration in particle b e ds for heat transfer modeling of a centrifugal solar particle receiver

This article describes a study of beam radiation striking particle beds of randomly packed, spherical par-ticles. The current study is focused on concentrating solar power receivers which use solid particles as a heat transfer medium, but results are appli ...

PERGAMON-ELSEVIER SCIENCE LTD2023

Dissecting the photoacidity of spiropyran/merocyanine molecular switches in water

Cesare Berton

Photochemistry is a discipline that studies the interaction between light and matter with the scope to induce chemical transformations. The first conjugation between light and chemistry can be dated back to the lifespan of Giacomo Luigi Ciamician, who is c ...

EPFL2023

Parametric study of URBAN morphology on building solar energy potential in Singapore context

Jérôme Henri Kämpf

In 2014, the Singapore government announced plans to increase the adoption of solar power, including by integrating solar PV systems into the urban environment. Careful planning of a neighbourhood at early design stage, which determines the overall urban m ...

2020

Selective C-C Coupling in Carbon Dioxide Electroreduction via Efficient Spillover of Intermediates As Supported by Operando Raman Spectroscopy

Michael Graetzel, Shaik Mohammed Zakeeruddin, Jing Gao, Jingshan Luo, Hong Zhang, Dan Ren

Developing efficient systems for the conversion of carbon dioxide to valuable chemicals using solar power is critical for mitigating climate change and ascertaining the worlds future supply of clean fuels. Here, we introduce a mesoscopic cathode consisting ...

AMER CHEMICAL SOC2019

Field test and electrode optimization of electrodynamic cleaning systems for solar panels

Christophe Ballif, Aïcha Hessler-Wyser, Antonin Faes, Jacques Levrat, Nicolas Badel, Nicolas Würsch, Matthieu Despeisse

Soiling is the major cause of power loss of photovoltaics (PV) and concentrated solar power (CSP) in desert areas. Electrodynamic cleaning system (EDS) is an automatic and water-free integrated cleaning system for mirrors or solar panels, which uses pulsed ...

WILEY2019

Metal Coordination Complexes as Redox Mediators in Regenerative Dye-Sensitized Solar Cells

Michael Graetzel, Shaik Mohammed Zakeeruddin, Nikolaos Vlachopoulos, Ulf Anders Hagfeldt, Yasemin Saygili, Marko Stojanovic, Natalie Flores Diaz

Dye-sensitized solar cells (DSSCs) have attracted a substantial interest in the last 30 years for the conversion of solar power to electricity. An important component is the redox mediator effecting the transport of charge between the photoelectrode and th ...

2019

Modeling and design guidelines for direct steam generation solar receivers

Sophia Haussener, Meng Lin

Concentrated solar energy is an ideal energy source for hightemperature energy conversion processes such as concentrated solar power generation, solar thermochemical fuel production, and solar driven hightemperature electrolysis. Indirectly irradiated sola ...

2018

Solar-Driven High-Temperature Electrolysis Reactor for Fuel Processing : Modeling, Optimization, and Experimentation

Meng Lin

Solar-driven high-temperature electrolysis (HTE) and thermochemical cycles (TCC) are two promising pathways for fuel processing and energy storage, which are considered in this thesis. The goals of this thesis are: i) offering engineering guidelines at sys ...

EPFL2018

Comparison-Based Optical Assessment of Hyperboloid and Ellipsoid Reflectors in a Beam-Down Solar Tower System With Linear Fresnel Heliostats

Meng Lin

Beam-down concentrating solar tower (BCST) is known for its merits in easy installation and maintenance as well as lower convection heat loss of the central receiver (CR) when comparing to a traditional concentrated solar tower system. A point-line-couplin ...

ASME2017

High-flux optical systems for solar thermochemistry

Sophia Haussener, Gaël Jean Clément Levêque

High-flux optical systems (HFOSs) are optical concentrators used to increase the radiative flux of the natural terrestrial solar irradiation. High radiative flux concentration leads to high energy density in solar receivers which allow to obtain high tempe ...

2017

Conceptual design of the EU DEMO EC-system: main developments and R&D achievements

Stefano Alberti, Minh Quang Tran, Falk Hans Braunmüller, Ioannis Pagonakis, Emanuele Poli, Konstantinos Avramidis

For the development of a DEMOnstration Fusion Power Plant the design of auxiliary heating systems is a key activity in order to achieve controlled burning plasma. The present heating mix considers electron cyclotron resonance heating (ECRH), neutral beam i ...

IOP Publishing Ltd2017

Optical and structural analysis of sol-gel derived Cu-Co-Mn-Si oxides for black selective solar nanocomposite multilayered coatings

Andreas Schueler, Aïcha Hessler-Wyser, Marina Aymara González Lazo, Olivia Valérie Charlotte Bouvard, Pierre Loesch, Martin Joly, Martin Python, Thomas Gascou, Yannik Antonetti

In this paper, we report the preparation of the precursor solutions for the deposition of Cu-Co-Mn-Si oxides by a sot-gel method in order to produce black selective coatings for CSP receiver tubes. Their optical properties were investigated by means of spe ...

Elsevier2015

Full System for Translational Studies of Personalized Medicine with Free-Moving Mice (invited)

Giovanni De Micheli, Sandro Carrara, Catherine Dehollain, Francesca Stradolini, Cristina Boero, Camilla Baj-Rossi, Seyedeh Sara Ghoreishizadeh, Enver Gürhan Kilinç, Grégoire Casimir Joseph Surrel, Stefano Riario

A full remotely powered system for metabolism monitoring of free-moving mice is presented here. The fully implantable sensing platform hosts two ASICs, one off-the-shelf micro-controller, four biosensors, two other sensors, a coil to receive power, and an ...

2015

Robust production of purified H-2 in a stable, self-regulating, and continuously operating solar fuel generator

Sophia Haussener, Miguel Antonio Modestino

The development of practical solar-driven electrochemical fuel generators requires the integration of light absorbing and electrochemical components into an architecture that must also provide easy separation of the product fuels. Unfortunately, many of th ...

Royal Society of Chemistry2014

Selective solar absorber coatings on receiver tubes for CSP - energy-efficient production process by sol-gel dip-coating and subsequent induction heating

Jean-Louis Scartezzini, Andreas Schueler, Aïcha Hessler-Wyser, Marina Aymara González Lazo, Martin Python, Martin Joly, Yannik Antonetti, Thomas Gascou

The energy efficiency of production processes for components of solar energy systems is an important issue. Other factors, which are important for the production of black selective solar coatings include production speed, cycle time and homogeneity of the ...

Elsevier Science Bv2014

Modelling of the receiver transient flux distribution due to cloud passages on a solar tower thermal power plant

Daniel Favrat, Germain Augsburger

As more and more solar tower thermal power plants are being operated, built or planned, effort is put both on the development and research to bring costs down and increase the plant efficiency. In those plants, the central receiver is one of the key compon ...

Pergamon-Elsevier Science Ltd2013

Thermo-economic optimisation of large solar tower power plants

Germain Augsburger

Given the growing number of solar tower power plants in operation, under construction and under planning, the assessment and the optimisation of their performance are required both at the energy level and the economic level. In other words, the same way as ...

EPFL2013

Self-tracking planar concentrator using a solar actuated phase-change mechanism

Christophe Moser, Volker Günter Zagolla, Damien Claude-Marie Loterie

In this paper we discuss optical considerations and present design simulation results for a self-tracking (passive) solar concentrator. The self-tracking mechanism uses a reversible in-plane paraffin thermal actuator to couple short-wavelength light into a ...

Spie-Int Soc Optical Engineering2013

Novel black selective coating for tubular solar absorbers based on a sol-gel method

Jean-Louis Scartezzini, Andreas Schueler, Martin Python, Marina Aymara González Lazo, Martin Joly, Thomas Gascou, Yannik Antonetti, Marina Garcia Gonzalez

Multi layered chrome-free black selective surfaces for solar thermal energy conversion were produced by a low-cost sol gel dip-coating method. The optical properties of the Cu-Co-Mn-Si-O based nanocrystalline thin films have been characterized by spectroph ...

Elsevier2013

Multi-Scale Modelling of a Solar Reactor for the High-Temperature Step of a Sulphur-Iodine-Based Water Splitting Cycle

Sophia Haussener, Aldo Steinfeld

The 3-step sulphur-iodine-based thermochemical cycle for splitting water is considered. The high-temperature step consists of the evaporation, decomposition, and reduction of H2SO4 to SO2 using concentrated solar process heat. This step is followed by the ...

ASME2012