Caroline Karmann

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In-situ evaluation of high-performance glazing based on illuminance and glare

Marilyne Andersen, Jean-Louis Scartezzini, Andreas Schueler, Jan Wienold, André Gabriel Kostro, Caroline Karmann, Pietro Florio

High-technology glazing panes are designed to meet the need for natural light, while optimizing key functions such as reducing solar heat gain in spaces and/or redirecting daylight to the rear of the spaces. However, the actual performance in terms of both ...

2022

Behind electrochromic glazing: Assessing user's perception of glare from the sun in a controlled environment

Jan Wienold, Caroline Karmann, Sneha Jain

The adaptable transmittance of electrochromic glazing allows to control the solar radiation entering buildings, yet the level of transmittance needed to protect from glare is still an unanswered question. To bridge this gap, this study evaluates the level ...

2022

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

Field evaluation of thermal and acoustical comfort in eight North-American buildings using embedded radiant systems

Caroline Karmann

We performed a post-occupancy assessment based on 500 occupant surveys in eight buildings using embedded radiant heating and cooling systems. This study follows-up on a quantitative assessment of 60 office buildings that found radiant and all-air buildings ...

2021

Virtual reality to assess visual attraction and perceived interest to daylit scene variations

Marilyne Andersen, Caroline Karmann, Kynthia Chamilothori, Bahar Aydemir

Façades and light pattern composition have been shown to influence the spatial experience and physiological responses of humans [1,2]. The present study examines the effect of sunlight penetration and window size on fixations to the floor of the scene, and ...

2021

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

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

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

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

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

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

Comparing temperature and acoustic satisfaction in 60 radiant and all-air buildings (vol 126, pg 431, 2017)

Caroline Karmann

PERGAMON-ELSEVIER SCIENCE LTD2021

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

Jan Wienold, Caroline Karmann, Sneha Jain

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

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

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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