Current Use of Lighting Simulation Tools in Sweden

The Implementation of Visual Comfort Evaluation in the Evidence-Based Design Process Using Lighting Simulation

Applied Sciences ◽

10.3390/app11114982 ◽

2021 ◽

Vol 11 (11) ◽

pp. 4982

Author(s):

Anahita Davoodi ◽

Peter Johansson ◽

Myriam Aries

Keyword(s):

Performance Metrics ◽

Analysis Data ◽

Evidence Based ◽

Visual Comfort ◽

Simulation Tools ◽

Post Occupancy Evaluation ◽

Lighting Simulation ◽

Insight Into

Validation of the EBD-SIM (evidence-based design-simulation) framework, a conceptual framework developed to integrate the use of lighting simulation in the EBD process, suggested that EBD’s post-occupancy evaluation (POE) should be conducted more frequently. A follow-up field study was designed for subjective–objective results implementation in the EBD process using lighting simulation tools. In this real-time case study, the visual comfort of the occupants was evaluated. The visual comfort analysis data were collected via simulations and questionnaires for subjective visual comfort perceptions. The follow-up study, conducted in June, confirmed the results of the original study, conducted in October, but additionally found correlations with annual performance metrics. This study shows that, at least for the variables related to daylight, a POE needs to be conducted at different times of the year to obtain a more comprehensive insight into the users’ perception of the lit environment.

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Review of spectral lighting simulation tools for non-image- forming effects of light

Journal of Physics Conference Series ◽

10.1088/1742-6596/2042/1/012122 ◽

2021 ◽

Vol 2042 (1) ◽

pp. 012122

Author(s):

M Gkaintatzi-Masouti ◽

J van Duijnhoven ◽

M P J Aarts

Keyword(s):

Building Design ◽

Lighting Design ◽

Light Sources ◽

Visual Comfort ◽

Review Of Literature ◽

Simulation Tools ◽

Current State ◽

Health Related ◽

Lighting Simulation ◽

User Friendly

Abstract Light via our eyes influences visual performance, visual comfort and visual experience, but also affects several health related, non-image-forming (NIF) responses. New metrics have been developed to quantify the NIF effects of light. In order to incorporate these in lighting design practice, simulation tools are required that are able to process information about the spectral distribution of light sources and materials. However, most of the tools currently used for daylight and electric light simulations simplify the spectrum into RGB (Red, Green, Blue) colour values. This paper presents an overview of the currently used programs for simulating the NIF effects of light in building design and discusses the possibility of using existing spectral rendering software as an alternative. A review of literature shows that mostly Radiance or Radiance-based programs have been used so far, but new user-friendly tools could employ existing spectral rendering tools. As the NIF effects of light gain greater importance in lighting design, new simulation workflows are needed. This paper aims to support the development of future workflows by presenting the current state-of-the-art.

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Advanced Lighting Simulation Tools for Daylighting Purpose: Powerful Features and Related Issues

Trends in Applied Sciences Research ◽

10.3923/tasr.2011.345.363 ◽

2011 ◽

Vol 6 (4) ◽

pp. 345-363 ◽

Cited By ~ 6

Author(s):

R.G. Bhavani ◽

M.A. Khan

Keyword(s):

Simulation Tools ◽

Lighting Simulation

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A Study of Different Building Energy Lighting Simulation Tools in Practice

Advances in Energy and Power ◽

10.13189/aep.2015.030401 ◽

2015 ◽

Vol 3 (4) ◽

pp. 91-95 ◽

Cited By ~ 2

Author(s):

Syed Rizwan Ali ◽

Laime Mahjdoubi ◽

Azmat Khan

Keyword(s):

Building Energy ◽

Simulation Tools ◽

Lighting Simulation

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Possibilities of using lighting simulation tools to predict the level of illumination on the workplace from electric lights

MATEC Web of Conferences ◽

10.1051/matecconf/201821002032 ◽

2018 ◽

Vol 210 ◽

pp. 02032

Author(s):

Pavel Drabek ◽

Julius Olufemi Ogunleye

Keyword(s):

Control Algorithms ◽

Design Criteria ◽

Environment Design ◽

Significant Percentage ◽

Colour Temperature ◽

Simulation Tools ◽

Lighting Control ◽

Lighting Energy ◽

Lighting Simulation ◽

Comparison Of The Results

Lighting is significant built environment design criteria, and architects or designers always keen to expend efforts to deliver optimal lighting solution. Moreover, the lighting energy consumption represents a significant percentage in a building’s energy balance. For these reasons, a suitable way to control the lighting in this field is crucial. The design of control algorithms can be done in various ways, however, in recent years, very useful tools for performing complex lighting assessments are simulation tools. This article deals with a comparison of the results of simulation tools and real measurements and further discusses the possibilities of using these tools to design lighting control algorithms. For the purpose of this paper was used specialized light laboratory where the lighting control is realized via the KNX system. This solution allows the adjustment of luminous intensity and colour temperature for each light separately. Subsequently, the comparison was made for the various configurations of the luminaire settings.

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The Implications of Assumed Boundary Conditions for the Reliability of Indoor Illuminance Predictions: A Case Study

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.861.501 ◽

2016 ◽

Vol 861 ◽

pp. 501-508

Author(s):

Ghazal Etminan ◽

Ehsan Vazifeh ◽

Ardeshir Mahdavi

Keyword(s):

Boundary Conditions ◽

Multiple Model ◽

Model Errors ◽

Distribution Models ◽

Simulation Tools ◽

Measurement Results ◽

Scene Description ◽

The Face ◽

Lighting Simulation ◽

The Impact

In order to model daylight availability and distribution in architectural spaces, simulation tools require reliable representations of boundary conditions – typically in terms of sky luminance distribution models. However, the impact of sky model errors on simulation-based indoor illuminance predictions is not well documented. There are different tools and methods to simulate indoor illuminance conditions and related daylight indicators. In the present study, we selected Radiance lighting simulation program. In order to generate sky scene description, Radiance contains two routines, namely, Gendaylit and Gensky. These routines require, as input, information on both direct and diffuse components of solar radiation. To explore the implications of the sky model selection on the fidelity of simulation results, we used Radiance to compute the indoor illuminance in an existing test space on the rooftop of a university building. Thereby, the aforementioned two sky models were considered. A third option (SC) was a sky model generated based on measured values obtained from a sky scanner. Simultaneously, the actual illuminance levels in this room were monitored under different outdoor conditions (clear, intermediate, overcast). The comparison of the measurement results with multiple model prediction results facilitates an empirically based evaluation of the reliability of indoor illuminance predictions in the face of different assumptions pertaining to the prevailing boundary conditions.

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