Publications related to Decentralized production in urban systems, the vision of the Institute of Energy Sciences of EPFL

Two novel cogeneration charging stations for electric vehicles: Energy, exergy, economic, environment, and dynamic characterizations

Jan Van Herle, Hossein Pourrahmani, Chengzhang Xu

This paper suggests two novel designs for the electric vehicle charging stations using LiMn2O4 Lithium-ion battery and based on a Solid Oxide Fuel Cell (SOFC) and absorption refrigeration cycle (ARC) technologies to provide electricity and cooling, respect ...

PERGAMON-ELSEVIER SCIENCE LTD2022

Reinforcement Learning for proactive operation of residential energy systems by learning stochastic occupant behavior and fluctuating solar energy: Balancing comfort, hygiene and energy use

François Maréchal, Dolaana Khovalyg, Amirreza Heidari

When it comes to residential buildings, there are several stochastic parameters, such as renewable energy production, outdoor air conditions, and occupants’ behavior, that are hard to model and predict accurately, with some being unique in each specific bu ...

2022

Structural Measures as Guides to Ultrastable States in Overjammed Packings

Sangwoo Kim

Jammed, disordered packings of given sets of particles possess a multitude of equilibrium states with different mechanical properties. Identifying and constructing desired states, e.g., of superior stability, is a complex task. Here, we show that in two-di ...

2022

Outdoor PM2.5 air filtration: optimising indoor air quality and energy

Dusan Licina, Evangelos Belias

Human inhalation exposure to fine particulate matter (PM2.5), including the PM2.5 of outdoor origin, predominantly occurs indoors. To limit outdoor PM2.5 penetration into buildings, ventilation standards often require the filtration of outdoor air with a m ...

2022

Semi-global controllability of a geometric wave equation

Joachim Krieger, Shengquan Xiang

We prove the semi-global controllability and stabilization of the

(1+1)-

dimensional wave maps equation with spatial domain 𝕊1 and target

𝕊k

. First we show that damping stabilizes the system when the energy is strictly below the threshold

2π

, where ha ...

2022

Assessment of Energy & Mobility synergies for city-scale hub design

Precisely predicting the future is an almost impossible challenge. However, predicting possible trend-lines is a more common thing. Current greenhouses gases emissions and climate change are among the most worrying issues humanity will face in a near futur ...

2021

Techno-Economic Optimization of an Integrated Biomass Waste Gasifier–Solid Oxide Fuel Cell Plant

François Maréchal, Jan Van Herle, Jürg Alexander Schiffmann, Victoria Xu Hong He, Arata Nakajo, Maria del Mar Perez Fortes

With a growing energy demand in a carbon-constrained society, fuels cells powered by renewable fuels, and specifically solid waste, are seen as interesting contributors to the energy portfolio. The alternative energy industry needs to reduce costs, enhance ...

2021

The digitalization of energy systems: towards higher energy efficiency

Marina Dorokhova

The energy industry is going through challenging times of disruptive changes caused by decarbonization, decentralization, and digitalization. As the energy value chain is restructuring itself to accommodate the growing penetration of renewables, increasing ...

EPFL2021

A 4D printed active compliant hinge for potential space applications using shape memory alloys and polymers

Jamie Paik, Zhenishbek Zhakypov, Jian-Lin Huang, Ralph Spolenak

This paper presents the proof-of-concept for a 4D printed active compliant hinge with a selectively variable stiffness for the deployment and reorientation of satellite appendages. We use 4D printing to create an active compliant hinge capable of bending t ...

IOP PUBLISHING LTD2021

The Role of Occupants in Buildings’ Energy Performance Gap: Myth or Reality?

Dolaana Khovalyg, Matteo Favero, Verena Marie Barthelmes

Buildings’ expected (projected, simulated) energy use frequently does not match actual observations. This is commonly referred to as the energy performance gap. As such, many factors can contribute to the disagreement between expectations and observations ...

2021

Decentralized production in urban systems, the vision of the Institute of Energy Sciences of EPFL

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Two novel cogeneration charging stations for electric vehicles: Energy, exergy, economic, environment, and dynamic characterizations

Reinforcement Learning for proactive operation of residential energy systems by learning stochastic occupant behavior and fluctuating solar energy: Balancing comfort, hygiene and energy use

Structural Measures as Guides to Ultrastable States in Overjammed Packings

Outdoor PM2.5 air filtration: optimising indoor air quality and energy

Semi-global controllability of a geometric wave equation

Assessment of Energy & Mobility synergies for city-scale hub design

Techno-Economic Optimization of an Integrated Biomass Waste Gasifier–Solid Oxide Fuel Cell Plant

The digitalization of energy systems: towards higher energy efficiency

A 4D printed active compliant hinge for potential space applications using shape memory alloys and polymers

The Role of Occupants in Buildings’ Energy Performance Gap: Myth or Reality?

Two novel cogeneration charging stations for electric vehicles: Energy, exergy, economic, environment, and dynamic characterizations

Techno-Economic Optimization of an Integrated Biomass Waste Gasifier–Solid Oxide Fuel Cell Plant

Assessment of Energy & Mobility synergies for city-scale hub design

The digitalization of energy systems: towards higher energy efficiency

Structural Measures as Guides to Ultrastable States in Overjammed Packings

Reinforcement Learning for proactive operation of residential energy systems by learning stochastic occupant behavior and fluctuating solar energy: Balancing comfort, hygiene and energy use

A 4D printed active compliant hinge for potential space applications using shape memory alloys and polymers

Semi-global controllability of a geometric wave equation

Outdoor PM2.5 air filtration: optimising indoor air quality and energy

The Role of Occupants in Buildings’ Energy Performance Gap: Myth or Reality?