Publications related to Daylight

Impact of Brightness on Glare Perception when Using Shading Fabrics

Marilyne Andersen, Jan Wienold, Caroline Karmann

Access to daylight and views out are usually recognized as beneficial to occupant comfort at the workplace. Simultaneously, discomfort glare due to direct sunlight is a known source of occupant dissatisfaction. Shading fabrics with low openness factor have ...

PLEA2022

Density currents driven by differential cooling in lakes: occurrence, dynamics and implications for littoral-pelagic exchange

Tomy Doda

Cross-shore flows exchange water laterally in lakes, with ecological implications for the ecosystem. One example is the convective circulation induced by differential cooling, also known as the thermal siphon. This lateral flow forms when the sloping sides ...

EPFL2022

A conceptual simulation workflow to guide design decisions regarding the effects of daylight on occupants' alertness

Marilyne Andersen, Clotilde Marie A Pierson, Victoria Eugenia Soto Magán

Recent developments in the lighting research field have demonstrated the importance of a proper exposure to light to mediate several of our behavioral and physiological responses. However, we spend nowadays around 90% of our time indoors with an often quit ...

IOP PUBLISHING LTD2021

Alertness in work environments : on the role of indoor daylight exposure

Victoria Eugenia Soto Magán

Light enables to see the world around us, while playing a key role in our biological functioning. During the last decades, light has become an important research topic for chronobiologists and neuroscientists, and their findings are increasingly interwoven ...

EPFL2021

Effect of Indoor Temperature and Glazing with Saturated Color on Visual Perception of Daylight

Marilyne Andersen, Jan Wienold, Giorgia Chinazzo

This paper presents the combined effect of indoor temperature (19 degrees C, 22 degrees C, and 26 degrees C) and colored glazing (blue, orange, and neutral) on visual perception of daylight. Experiments were performed in an office-like test room, in which ...

TAYLOR & FRANCIS INC2021

Cognitive performance evaluation under controlled daylight levels at different indoor temperatures

Marilyne Andersen, Jan Wienold, Giorgia Chinazzo

This paper details the results of an experimental study investigating the influence of daylight illuminance levels and indoor temperatures on objective and subjective performance evaluations, investigated through paper-based tasks and questionnaires, respe ...

2019

Influence of indoor temperature and daylight illuminance on visual perception

Marilyne Andersen, Jan Wienold, Giorgia Chinazzo

This paper details the results of an experimental study investigating the combined effect of indoor temperature (19 ℃, 23 ℃ and 27 ℃) and horizontal illuminances (∼140 lx, ∼610 lx and ∼1440 lx) on visual perception, with daylight as the only source of ligh ...

2019

Daylight affects human thermal perception

Marilyne Andersen, Jan Wienold, Giorgia Chinazzo

Understanding the factors that affect human thermal responses is necessary to properly design and operate low-energy buildings. It has been suggested that factors not related to the thermal environment can affect thermal responses of occupants, but these f ...

Nature Research2019

Daylight and temperature in buildings: interaction effects on human responses

Giorgia Chinazzo

Over the past years, increasing efforts have been devoted to understand how people perceive the indoor environment with the goal to improve building design and operation. Studies have separately addressed the effects of the four main aspects that influence ...

EPFL2019

A Critical Literature Review of Spatio-temporal Simulation Methods for Daylight Glare Assessment

Marilyne Andersen, Jan Wienold, Stephen William Wasilewski, Lars Oliver Grobe

A well daylighted space can provide a highly satisfying visual environment. However, if that environment causes us visual discomfort, it can become such a nuisance that we, sometimes literally, turn our backs on this powerful connection to the outside worl ...

2019

Indoor environment as a multi-sensory experience: visual and thermal factor interactions

Marilyne Andersen, Jan Wienold, Giorgia Chinazzo

In our daily lives we are exposed simultaneously to multiple sensory stimuli, such as visual, thermal, acoustic and olfactory. Experienced together, they shape our perception of the environment and determine our comfort. In indoor environments, stimuli are ...

2018

Façade design and our experience of space: the joint impact of architecture and daylight on human perception and physiological responses

Marilyne Andersen, Jan Wienold, Kynthia Chamilothori

Daylight has an undeniable value in various aspects of architectural design, ranging from energy efficiency and user comfort to our experience of space. Even though there is substantial evidence of the positive effects of daylight access on occupants, we h ...

2018

Daylight Discomfort Glare Evaluation with Evalglare: Influence of Parameters and Methods on the Accuracy of Discomfort Glare Prediction

Jan Wienold, Clotilde Marie A Pierson, Magali Bodart

Nowadays, discomfort glare indices are frequently calculated by using evalglare. Due to the lack of knowledge on the implications of the methods and parameters of evalglare, the default settings are often used. But wrong parameter settings can lead to inap ...

2018

Suitability of neighborhood-scale massing models for daylight performance evaluation

Marilyne Andersen, Luisa Pastore, Minu Agarwal

Access to daylight in buildings is the combined effect of a building’s own physical attributes along with its surrounding physical context. There is thus growing interest among researchers to extend the use of building performance simulation (BPS) tools fo ...

2017

Perceptual Dynamics of Daylight in Architecture

Siobhan Francois Rockcastle

In our experience of daylit architecture, our visual perception is greatly impacted by the ephemeral and inherently dynamic conditions of the surrounding environment. Driven by changes in sky type, time-of-day, and time-of-year, these variable conditions c ...

EPFL2017

A Simulation-Based Workflow to Assess Human-Centric Daylight Performance

Marilyne Andersen, María Lovísa Ámundadóttir, Siobhan Francois Rockcastle

This paper will present an annual simulation-based workflow for assessing human perceptual and non-visual responses to daylight across a series of view positions in an architectural case study. Through the integration of mathematical models used to predict ...

2017

Potential advantages of a multifunctional complex fenestration system with embedded micro-mirrors in daylighting

Andreas Schueler, André Gabriel Kostro, Ali Motamed, Jing Gong

Proper daylighting designs in interior spaces may reduce the energy costs of electric lighting and improve the productivity of occupants. This paper reports the potential advantages of a multifunctional complex fenestration system with embedded micro-mirro ...

Pergamon-Elsevier Science Ltd2016

Annual Performance Assessment of Complex Fenestration Systems in Sunny Climates Using Advanced Computer Simulations

Jean-Louis Scartezzini, Jérôme Henri Kämpf, Chantal Basurto Dávila

Complex Fenestration Systems (CFS) are advanced daylighting systems that are placed on the upper part of a window to improve the indoor daylight distribution within rooms. Due to their double function of daylight redirection and solar protection, they are ...

2015

On advanced daylighting simulations and integrated performance assessment of complex fenestration systems for sunny climates

Chantal Basurto Dávila

The inclusion of daylight in buildings represents several benefits: its use not only signifies a reduction in the building energy consumption through the compensation of electric lighting, it also has positive effects in the execution of human activities. ...

EPFL2014

Concept, Design and Performance of a Shape Variable Mashrabiya as a Shading and Daylighting System for Arid Climates

Marilyne Andersen, Boris Clément Karamata

The design of a solar protection system that can minimize solar gains while maximizing daylight and view to the outside is particularly challenging in arid climates, such as in the Middle-East, where sand, wind and corrosion impose specific constraints. We ...

CEPT University Ahmedabad2014