Visual comfort evaluation of table-HUD

2021 ◽  
Author(s):  
Feiyan Zhou ◽  
Dewen Cheng ◽  
Wenrui Shen ◽  
Yongtian Wang
Keyword(s):  
Visual Comfort ◽  
Comfort Evaluation

A LABORATORY STUDY ON VISUAL AND EMOTIONAL COMFORT EVALUATION OF LED WIDE BEAM ANGLE LAMPS : TAKING 3000K/ 4000K / 5000 K LINEAR LAMPS AS RESEARCH OBJECT

2021 ◽  
Author(s):  
Kai Feng ◽  
Luoxi Hao ◽  
Shujian Dai
Keyword(s):  
Laboratory Experiment ◽  
Laboratory Study ◽  
Negative Evaluation ◽  
Light Pollution ◽  
Visual Comfort ◽  
Beam Angle ◽  
Wide Beam ◽  
Comfort Evaluation ◽  
Medium Speed ◽  
Negative Feelings

LED wide beam angle lamps have been widely used but might leading to glare or light pollution easily than traditional floodlighting lamps. Standards for wide beam angle products is not enough and a laboratory experiment was carried out in which visual and emotional comfort was used as evaluation items. 3 linear lamps (3000K/4000K/5000K) were used to evaluate emotional and visual comfort changes by performing different brightness or dynamic speed. Results showed that both brightness and dynamic speed could lead to negative feelings while emotional discomfort always occurs behind the eye’s discomfort. A higher brightness could leading to more negative evaluations, while some people think that medium brightness gives a more comfort feeling. A faster speed leads to more negative evaluation while some subjects prefer a medium speed (both in shading and erasure situations); In different lighting scenes, the significance of different indicators is different.

scholarly journals Daylighting, Space, and Architecture: A Literature Review

2015 ◽  
Vol 12 (1) ◽  
Author(s):  
Dalia Hafiz
Keyword(s):  
Visual Field ◽  
Literature Review ◽  
Simulation Software ◽  
Decision Makers ◽  
Design Element ◽  
Visual Comfort ◽  
Review Of The Literature ◽  
Lighting Conditions ◽  
Comfort Evaluation ◽  
Constant Change

Daylighting dynamism and constant change can characterize buildings and spaces with a living quality that cannot be achieved with any other design element. However, daylighting can create unwanted lighting conditions in the visual field causing discomfort and glare. This may affect the performance of building occupants such as workers or students. Consequently, designing for daylighting needs a good understanding of daylighting. Designers can rely on information from simulation software to re-imagine the space, especially to examine possible unexpected visual discomfort conditions.This paper aims to represent different visual comfort evaluation methods that can help decision-makers make better informed decisions. Different definitions and structures associated with daylight and glare are examined. It also presents a review of the literature of previous research conducted on daylighting, visual comfort analysis and glare studies.

scholarly journals Daylight in Buildings and Visual Comfort Evaluation: the Advantages and Limitations

2021 ◽  
Vol 8 (2) ◽  
pp. 181-203
Author(s):  
Amir Tabadkani ◽  
◽  
Astrid Roetzel ◽  
Hong Xian Li ◽  
Aris Tsangrassoulis ◽  
...  
Keyword(s):  
Green Building ◽  
Well Being ◽  
Indoor Environments ◽  
Visual Comfort ◽  
Specific Criterion ◽  
Future Studies ◽  
Quantitative Indices ◽  
Comfort Evaluation ◽  
Overall Performance ◽  
Performance Adaptation

Exposure to daylight significantly affects the psychological well-being of occupants by diminishing headaches, eye tensions, or stress. Daylight penetration is a matter of collaboration between building façade and perimeter zones that can be controlled through façade design features. This study reviews available daylighting systems to block or redirect natural light inside the space and their overall performance. Adaptation found to be the main key feature of daylighting systems to improve their effectiveness in indoor environments. As the main implication of such systems on the visual comfort performance of occupants, a list of quantitative indices is studied based on their mathematical equation to outline their advantages and limitations. Findings revealed a lack of agreement on acceptable indoor illuminance thresholds for most of the indices and the absence of a reliable glare index in presence of sun within the view field of the occupant. Similarly, many green building certifications propose a specific criterion to assess view out but remained a challenge for future studies.

scholarly journals Post-Occupancy Evaluation of Indoor Environmental Quality in a nZEB sport hall in a Mediterranean climate.

2019 ◽  
Vol 111 ◽  
pp. 02048
Author(s):  
Joana Ortiz ◽  
Maria L. Gonzalez Matterson ◽  
Paolo Taddeo ◽  
Jaume Salom
Keyword(s):  
Air Quality ◽  
Thermal Comfort ◽  
Mediterranean Climate ◽  
Indoor Environmental Quality ◽  
Visual Comfort ◽  
Monitoring Campaign ◽  
Post Occupancy Evaluation ◽  
Comfort Evaluation ◽  
Two Phases ◽  
Comfort Parameters

The aim of the present work is to evaluate the environmental comfort of the users of a new nZEB sport hall located in Tarragona, Spain, through a Post Occupancy Evaluation. The study is composed by two phases of measurements where the visual comfort, the thermal comfort and the air quality are evaluated. The first monitoring campaign is focused on a detailed visual comfort evaluation under daylight conditions, done on July 28th, 2017. The second monitoring campaign is focused on the thermal comfort and the air quality and was performed during the Mediterranean Olympic Games from June 19th to July 1st of 2018. Moreover, around 140 of surveys are done to the audience to compare the calculated comfort parameters with the perception of the users. The results of the Post Occupancy Evaluation are satisfactory, obtaining good comfort indexes and demonstrating a good perception by the users.

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