Reliable, fast and intuitive daylight simulation for 3D architectural and urban models directly integrated within SketchUp graphic modeler

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Jodie Carpenter
6 years ago
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is an essential part of architecture and urban planning.

energetic and scientific, poetic, sensitive, qualitative.

project in their quest for energy savings, comfort and pleasantness.

well-being in the spaces, and also to productivity within the work spaces.

countries and its evaluation is now necessary for certifications.

of the intake and distribution of natural light in architectural and urban

It uses the latest research results in daylighting and simulation techniques.

answer to sustainable certifications requirements, to verify the

2 Reliable, fast and intuitive daylight simulation for 3D architectural and urban models directly integrated within SketchUp graphic modeler Natural light is an essential part of architecture and urban planning. The luminous ambience in natural light influences various points of view like energetic and scientific, poetic, sensitive, qualitative. The evaluation of daylight for spaces in design helps the participants in the project in their quest for energy savings, comfort and pleasantness. For future users of the project, daylight ambience contributes to health and well-being in the spaces, and also to productivity within the work spaces. Natural light is part of the sustainability assessment methods in most countries and its evaluation is now necessary for certifications. DL-Light is the software suite developed by De Luminæ to help the evaluation of the intake and distribution of natural light in architectural and urban spaces. It uses the latest research results in daylighting and simulation techniques. It combines the validated algorithms of Radiance with a very intuitive interface. DL-Light allows: to understand the qualities of the luminous ambience, to answer to sustainable certifications requirements, to verify the correspondence to architectural intentions, to convince of the qualities of the project. Designed to take into account all types of situations and climates, DL-Light is used all over the world in Australia, Belgium, Canada, France, Germany, Holland, Hong-Kong, Mexico, Norway, Spain, Sweden, United-Kingdom, USA, etc. 1/6

LUMINOUS AUTONOMY Requirements in International Certifications DL-Light calculates luminous autonomy in

This indicator has been created to quantify the performance of natural light using an illuminance threshold

Hence it helps to quantify the consumption of energy due to artificial lighting to maintain that minimum

Light blue areas are autonomous less than 10% of the time.

The analysis of luminous autonomy considers that, when natural light is sufficient, artificial lighting is

Light green areas are autonomous between 45% and 55% of the time.

3 LUMINOUS AUTONOMY Requirements in International Certifications DL-Light calculates luminous autonomy in Daylighting to evaluate how many hours per year artificial lighting is unnecessary. This indicator has been created to quantify the performance of natural light using an illuminance threshold to maintain. Hence it helps to quantify the consumption of energy due to artificial lighting to maintain that minimum illuminance level. Luminous Autonomy in SketchUp 3D Beige areas are autonomous more than 80% of the time. Light blue areas are autonomous less than 10% of the time. The module allows to calculate directly Breeam requirements or custom criteria. The analysis of luminous autonomy considers that, when natural light is sufficient, artificial lighting is not used. Orange areas are autonomous between 65% and 75% of the time. Light green areas are autonomous between 45% and 55% of the time. The calculation is performed versus a threshold illuminance level, often at 300 or 500 lux, and during occupied hours of the building. The ray-tracing simulations of illuminance are performed hour per hour and compared to the defined threshold. It uses the 3D model, the characteristics of materials defined for the project, the environment geometry and climatic data. Threshold 300 lux Threshold 500 lux 2/6

https://deluminaelab.com/en/download-dl-light DAYLIGHT FACTOR Requirements in International Certifications DL-Light calculates the Daylight Factor.

This indicator evaluates the performance in Daylighting in unfavourable conditions, the overcast sky.

Daylight Factor inside the SketchUp 3D model This module directly calculates the daylight factor, but also the Breeam requirements for average DF, minimum DF and

Daylight Factor on a whole floor in the SketchUp model The analysis of the Daylight Factor shows how the light from the sky illuminates interior spaces.

4 DAYLIGHT FACTOR Requirements in International Certifications DL-Light calculates the Daylight Factor. Following the same logic as autonomy, you can easily visualize the DF of your interior spaces inside the Sketchup model. This indicator evaluates the performance in Daylighting in unfavourable conditions, the overcast sky. It allows to understand how the light from the sky is distributed in the interior spaces. Daylight Factor inside the SketchUp 3D model This module directly calculates the daylight factor, but also the Breeam requirements for average DF, minimum DF and uniformity. Daylight Factor on a whole floor in the SketchUp model The analysis of the Daylight Factor shows how the light from the sky illuminates interior spaces. DF does not take into account direct light from the sun. Turquoise areas Dark blue areas have DF between 3,2 and 4,8. have DF between 0 and 1,6. It is independent from the real climatic conditions of the site and from building orientation. Like all our modules, it uses ray-tracing simulations via Radiance calculation engine in order to calculate illuminance with precision. De Luminæ contact@deluminaelab.com Analysis report for all surfaces 3/6

DIRECT SUN MAPS Shadow maps DL-Light calculates the number of hours when direct sunrays hit the faces of a SketchUp model. This allows to make precise solar studies.

It calculates for a whole period, a season, a whole year or a unique moment.

It allows: - The identification of glazed surfaces with risks of glare or overheating and that require protection. Exposure to direct sunrays in summer.

5 DIRECT SUN MAPS Shadow maps DL-Light calculates the number of hours when direct sunrays hit the faces of a SketchUp model. This allows to make precise solar studies. It takes into account the meteorological data of the site, the clear skies, he overcast ones, etc. It is much more than a simple shadow visualizer. It calculates for a whole period, a season, a whole year or a unique moment. As soon as the sketch phase, DL-Light shows the surfaces to protect, to insulate, the faces that may be favorable to passive solar, faces that risk overheating, glare, etc. It allows: - The identification of glazed surfaces with risks of glare or overheating and that require protection. Exposure to direct sunrays in summer. Outside and inside surfaces within the SketchUp 3D model Green areas receive direct sunrays 3h20min per day. Blue areas receive direct sunrays less than 1/2 hour per day. Red areas receive direct sunrays more than 5 hours per day. - The evaluation of glazing protection efficiency and the comparison of alternatives. - The identification of faces favorable to passive solar benefits or to place active solar panels. - To help the precise positioning of glazed surfaces according to solar rays and site climate. Micro-urban level, influence of the passageway of façade insulation During the winter season, Green areas receive direct sunrays 24 minsper day. Red areas receive direct sunrays more than 2.5 hours per day. 4/6

SKY VIEW FACTOR DL-Light computes the Sky View Factor.

$quantification on the color palette. The Sky View Factor is the fraction of visible sky from the various surfaces of the model.$ The value of the sky view factor may be represented as percentage or solid angle.

The value of the sky view factor may be represented as percentage or solid angle.

Light blue areas see 100% of the sky. Sky View Factor extension is designed for early design phases of the project, when the level of details is low.

6 SKY VIEW FACTOR DL-Light computes the Sky View Factor. The view of the sky in architectural and urban projects is an important aspect of the well-being inside spaces. The SVF module allows to easily understand sky visibility for all the chosen spaces thanks to a visualization with False Color patches along with a quantification on the color palette. The Sky View Factor is the fraction of visible sky from the various surfaces of the model. The value of the sky view factor may be represented as percentage or solid angle. Sky View Factor on an urban area for a housing project General and detailed view in SketchUp Dark blue areas see 2% to 4% of the sky. Light blue areas see 100% of the sky. Sky View Factor extension is designed for early design phases of the project, when the level of details is low. Only a minimum of information about the environment, the position and project geometry is necessary. Information of the Sky View Factor for various surfaces of the project influence decisions on heating, cooling and lighting strategies at early stages. Sky view factor in SketchUp Open Space Dark blue areas see 2% to 4% of the sky. Light blue areas see 11% to 13% of the sky. 5/6

Contact us Email : contact@deluminaelab.

com De Luminæ is a technical and research office in natural and artificial lighting, its impacts on energy consumption and the improvement of comfort and pleasantness for sustainable buildings and

De Luminæ has developed expertise in software Radiance, internationally renowned for the scientific quality of its results and that allows to simulate the most complex situations.

De Luminæ was founded by Ljubica Mudri and Jean-Dominique Lénard. Ljubica Mudri is Architect, PhD in Energetics from the Ecole Nationale Supérieure des Mines de Paris, specialist in Daylighting.

Jean-Dominique Lénard, PhD in Applied Maths from University Paris-Dauphine, MSc Applied Mathematics from the London School of Economics (LSE), specialized in simulation techniques.

De Luminæ has developed a strong expertise in Daylighting in order to contribute to the most varied questions: highly complex architecture, specific interior and exterior spaces, luminous discomfort,

7 Contact us contact@deluminaelab.com Web : De Luminæ is a technical and research office in natural and artificial lighting, its impacts on energy consumption and the improvement of comfort and pleasantness for sustainable buildings and cities. De Luminæ produces and distributes the software DL-Light, based on Radiance, for the design and evaluation of architectural and urban ambiances in Daylighting. De Luminæ has developed expertise in software Radiance, internationally renowned for the scientific quality of its results and that allows to simulate the most complex situations. As it comes from the research field, De Luminæ keeps a strong R&D activity in order to maintain a high level of expertise and a constant innovative strategy. De Luminæ was founded by Ljubica Mudri and Jean-Dominique Lénard. Ljubica Mudri is Architect, PhD in Energetics from the Ecole Nationale Supérieure des Mines de Paris, specialist in Daylighting. She has been teaching Daylighting in various universities in France. Jean-Dominique Lénard, PhD in Applied Maths from University Paris-Dauphine, MSc Applied Mathematics from the London School of Economics (LSE), specialized in simulation techniques. They have published the results of their researches in many international journals and congresses. De Luminæ has developed a strong expertise in Daylighting in order to contribute to the most varied questions: highly complex architecture, specific interior and exterior spaces, luminous discomfort, subjective questions, etc. De Luminæ accompanies architects, consultants, building buyers and users to answer 3 main questions, essential to energetics and comfort: Quantity of light, is there enough natural light in the spaces for the intended activities? Comfort/discomfort, how is natural light distributed in the spaces or why do users complain? Pleasantness, does natural light contribute to create a pleasant space that corresponds to the intentions? Examples of intervention National French Bank : French Television : Toulouse Hospital : Office Towers : Orléans Private Hospital: Luminous discomfort in natural/artificial lighting and improvement project. Conformity to French environmental certification for visual comfort. Luminous discomfort in Post-anesthesia recovery rooms. Impact of flooring on energy consumption, environmental certification. Study of color profile in interior spaces & conformity to environmental certification. 6/6

Parametric Daylight Envelope: shading for maximum performance

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