Journal ArticleDOI
Validation of dynamic RADIANCE-based daylight simulations for a test office with external blinds
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TLDR
The study encompasses the validation of the dynamic, RADIANCE-based daylight simulation method DAYSIM, which uses the concept of daylight coefficients and the Perez sky model to predict the short-time-step development of indoor illuminances, and it has been found that the treatment of direct sunlight strongly influences the accuracy of the daylight coefficient method.About:
This article is published in Energy and Buildings.The article was published on 2001-09-01. It has received 579 citations till now. The article focuses on the topics: Daylight & Daylight factor.read more
Citations
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Journal ArticleDOI
Lightswitch-2002: a model for manual and automated control of electric lighting and blinds
TL;DR: A simulation algorithm is proposed that predicts the lighting energy performance of manually and automatically controlled electric lighting and blind systems in private and two-person offices and features four different user types to mimic variation in control behavior between different occupants.
Journal ArticleDOI
The impact of shading design and control on building cooling and lighting demand
TL;DR: In this paper, the simultaneous impact of glazing area, shading device properties and shading control on building cooling and lighting demand was calculated using a coupled lighting and thermal simulation module, and the simulation results indicated that, if an integrated approach for automatic control of motorized shading is used in conjunction with controllable electric lighting systems, substantial reduction of energy demand for cooling in perimeter spaces, depending on climatic conditions and orientation.
Journal ArticleDOI
A review of modelling approaches and tools for the simulation of district-scale energy systems
Jonas Allegrini,Jonas Allegrini,Kristina Orehounig,Kristina Orehounig,Georgios Mavromatidis,Georgios Mavromatidis,Florian Ruesch,Viktor Dorer,Ralph Evins,Ralph Evins +9 more
TL;DR: A comprehensive review of modelling approaches and associated software tools that address district-level energy systems is presented in this paper, which complements previous studies by focussing on models and software tools for addressing districtlevel interactions in energy systems.
Journal ArticleDOI
Monitoring manual control of electric lighting and blinds
Christoph Reinhart,K Voss +1 more
TL;DR: In this article, the authors validate and extend present knowledge of the degree and kind of manual control strategies of blinds and electric lighting systems that are used in private and two-person offices.
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Daylight metrics and energy savings
TL;DR: In this paper, the authors review the historical basis of current compliance methods for achieving daylit buildings, propose a technical basis for development of better metrics, and provide two case study examples to stimulate dialogue on how metrics can be applied in a practical, real-world context.
References
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Journal ArticleDOI
Modeling daylight availability and irradiance components from direct and global irradiance
TL;DR: In this paper, the authors present the latest versions of several models developed by the authors to predict short time-step solar energy and daylight availability quantities needed by energy system modelers or building designers.
Journal ArticleDOI
All-weather model for sky luminance distribution—Preliminary configuration and validation
TL;DR: In this article, the mean instantaneous sky luminance angular distribution pattern for all sky conditions from overcast to clear, through partly cloudy, skies is described. But the model is not suitable for the case of clouds.
Book
Rendering with radiance: the art and science of lighting visualization
Greg Ward Larson,Rob Shakespeare +1 more
TL;DR: This is the definitive reference on the radiance lighting simulation and rendering system.
Journal ArticleDOI
The simulation of annual daylight illuminance distributions — a state-of-the-art comparison of six RADIANCE-based methods
TL;DR: In this article, the authors discuss simulation results of annual indoor illuminance distributions for two office geometries situated in Freiburg, Germany, calculated with six different RADIANCE-based daylight simulation methods.
Journal ArticleDOI
Validation of a lighting simulation program under real sky conditions
TL;DR: In this article, the authors compared the illuminance predictions from the lighting simulation program RADIANCE with measurements taken in full-scale experimental rooms under real sky conditions for both overcast and clear skies.