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Jan Wienold

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Publications associées (71)

A Critical Comparison of Annual Glare Simulation Methods

Marilyne Andersen, Jan Wienold

Recently, there have been multiple proposals for faster methods to calculate glare metrics, daylight glare proba- bility (DGP) in particular. This is driven simultaneously by the lengthy times required to simulate DGP with a con- ventional image-based appr ...

2022

Window Size Effects on Subjective Impressions of Daylit Spaces: Indoor Studies at High Latitudes Using Virtual Reality

Marilyne Andersen, Kynthia Chamilothori, Jan Wienold

Daylight provision to the indoor space is affected by different building elements that cannot be fully controlled by the users, such as the window size of a space. The dimensions of the fenestration not only affect the lighting levels, but they also affect ...

2021

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

Marilyne Andersen, Giorgia Chinazzo, Jan Wienold

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

Raytraverse: Navigating the Lightfield to Enhance Climate-Based Daylight Modeling

Marilyne Andersen, Jan Wienold, Stephen William Wasilewski

We propose a new method for climate-based daylight modeling (CBDM) based on simulating and evaluating only the most important features. By adaptively sampling the temporal lightfield that describes daylight in buildings, our method escapes the curse of dim ...

2021

Environmental preferences of occupants: A multi-domain approach in the Swiss open office case study

Marilyne Andersen, Jan Wienold, Dusan Licina, Dolaana Khovalyg, Arnab Chatterjee, Caroline Karmann, Verena Marie Barthelmes

Defining indoor environmental conditions that meet the needs and preferences of occupants in open space offices can be challenging since the same space might be occupied by people with different individual needs and preferences regarding what constitutes a ...

IOP Science2021

On Sensitivity to Glare and Its Relationship with Macular Pigment

Marilyne Andersen, Jan Wienold, Sneha Jain

Current trends in discomfort glare research have suggested the influence of physiological parameters on individual glare perception. To this end, we hypothesize that a specific ocular physiology characteristic, namely the macular pigment (MP) in the retina ...

2021

Global Environmental Stimuli and Human-Building Interaction in Open Space Offices: A Swiss Case Study

Marilyne Andersen, Jan Wienold, Dusan Licina, Dolaana Khovalyg, Arnab Chatterjee, Maria Viviana Gonzalez Serrano, Caroline Karmann, Verena Marie Barthelmes

Office employees are exposed to a variety of environmental and contextual stimuli that might drive them to perform control actions, such as operating windows or window blinds. These actions have a significant impact on building energy use and increase unce ...

AMER SOC HEATING, REFRIGERATING AND AIR-CONDITIONING ENGS2021

User Evaluations of Contrast-Dominant Discomfort Glare Dim Daylit Scenarios: Preliminary Findings

Marilyne Andersen, Jan Wienold, Geraldine Cai Ting Quek

Discomfort glare metrics typically consider at least one of the two effects of discomfort glare-saturation and contrast-in their equation. The former occurs when there is an excessively bright glare source in the field of view, while the latter occurs when ...

2021

Glare assessment in a daylit workplace from a physiological perspective

Marilyne Andersen, Jan Wienold, Sneha Jain

Designing the buildings that facilitate optimum utilization of daylight is desirable for its many benefits [1], [2] yet challenging due to other intrinsic properties of daylight responsible for over-heating and discomfort glare [3]. Discomfort glare has be ...

2021

Subjective assessment of visual comfort in a daylit workplace with an electrochromic glazed facade

Jan Wienold, Sneha Jain, Caroline Karmann

Electrochromic (EC) glazing is increasingly employed in building facades to achieve better visual comfort for the occupants. EC glazing can modulate the light entering through the facade by varying the solar transmittance of the glass and therefore can wor ...

IOP PUBLISHING LTD2021

Comparing performance of discomfort glare metrics in high and low adaptation levels

Marilyne Andersen, Mandana Sarey Khanie, Jan Wienold, Geraldine Cai Ting Quek

Current discomfort glare prediction metrics usually account for at least one of the two categories of effects that induce discomfort glare – the saturation and contrast effects. Saturation-driven metrics (overall illuminance on the eye) are suited for brig ...

2021

Modeling specular transmission of complex fenestration systems with data-driven BSDFs

Jan Wienold

A Bidirectional Scattering Distribution Function (BSDF) describes how light from each incident direction is scattered (reflected and transmitted) by a simple or composite surface, such as a window shade. Compact, tabular BSDFs may be derived via interpolat ...

2021

Spatial evaluation of potential saturation and contrast effects of discomfort glare in an open-plan office

Marilyne Andersen, Jan Wienold, Geraldine Cai Ting Quek, Stephen William Wasilewski

This paper analyzes the relative distribution of annual saturation and contrast effects of discomfort glare in a deep open-plan office. A previous comparative study has shown that while hybrid glare metrics were found to predict glare well in most scenario ...

2021

Temperature–Color Interaction: Subjective Indoor Environmental Perception and Physiological Responses in Virtual Reality

Marilyne Andersen, Kynthia Chamilothori, Giorgia Chinazzo, Jan Wienold

Objective Temperature–color interaction effects on subjective perception and physiological responses are investigated using a novel hybrid experimental method combining thermal and visual stimuli from real and virtual reality (VR) environments, respectivel ...

2021

Triggers behind human-building interactions from a user perspective: results and effectiveness of capturing motivations in real-time

Marilyne Andersen, Jan Wienold, Dusan Licina, Dolaana Khovalyg, Caroline Karmann, Verena Marie Barthelmes

2020

Correspondence: Discussion of 'The cross validation and robustness of daylight glare metrics'

Jan Wienold

2020

Energy performance and occupancy-based analysis of visual and thermal comfort for transmittance level and layout variations of semi-transparent photovoltaics

Marilyne Andersen, Giuseppe Peronato, Giorgia Chinazzo, Jan Wienold

This paper investigates the impact of transmittance level and layout variations of semi-transparent photovoltaics (STPV) on both energy performance and occupancy-based visual and thermal comfort, simulating a reference office with a fully south-oriented gl ...

IBPSA2019

Daylight affects human thermal perception

Marilyne Andersen, Giorgia Chinazzo, Jan Wienold

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

Subjective and physiological responses to façade and sunlight pattern geometry in virtual reality

Marilyne Andersen, Kynthia Chamilothori, Giorgia Chinazzo, Jan Wienold, João Pedro de Matos Rodrigues

This study investigates the joint impact of façade geometry and associated sunlight patterns on occupant subjective perception and physiological responses through a novel experimental method coupling physically-based simulations shown in virtual reality wi ...

2019

Cross-validation and robustness of daylight glare metrics

Marilyne Andersen, Mandana Sarey Khanie, Jan Wienold, Clotilde Marie A Pierson

This cross-validation study evaluates the performance and robustness of twenty-two established and newly proposed glare prediction metrics. Experimental datasets of daylight-dominated workplaces in office-like test rooms were collected from studies by seve ...

2019

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