Because well-being is becoming a major challenge in construction alongside energy efficiency, there an increasing need to be able quantify discomfort buildings. In the case of glare, kind glare provoking irritating or distracting effect, no current indices can properly explain high variability existing between individuals' perceptions. This due fact that some factors influencing perception are still unknown and mechanism behind process not well understood. Therefore, this article aims review...

In the field of lighting, luminance maps are often used to evaluate point-in-time lighting scenes from occupant's vantage point. High Dynamic Range (HDR) photography can be generate such maps. The aim this tutorial is present a comprehensive overview step-by-step procedure 180° map daylit scene sequence multiple exposures with semiprofessional equipment and Radiance suite programs. consists in capturing visual scene; selecting useful exposures; merging HDR image by using predefined camera...

Abstract The effective integration of daylighting considerations into the design process requires many issues to be considered simultaneously, such as daily and seasonal variations, illumination, thermal comfort. To address need for early process, a new approach called Lightsolve has been developed. Its key objectives are support using goal-oriented based on iterative improvement suggestions; provide climate-based annual metrics in visual synthesized format; relate quantitative qualitative...

Many conventional daylighting design tools are limited in that each simulation represents only one time of year and day (or a single, theoretical overcast sky condition). Since daylight is so variable – due to the movement sun, changing seasons, diverse weather conditions moment hardly representative overall quality design, which why climate-based, dynamic performance metrics like Daylight Autonomy (DA) Useful Illuminance (UDI) needed. Going step further, annual variation (condensed...

Nowadays, discomfort glare indices are frequently calculated by using evalglare. Due to the lack of knowledge on implications methods and parameters evalglare, default settings often used. But wrong parameter can lead inappropriate source detection therefore invalid calculations erroneous classifications. For that reason, this study aims assess influence several accuracy prediction for daylight. This analysis uses two datasets, representative types glare: saturation contrast glare. By...

The mechanism behind the discomfort glare phenomenon, kind of provoking an irritating or distracting effect, is not well understood. Since some factors influencing this phenomenon are still unknown, no current indices can properly explain high variability existing between individuals' perception. A list potential degree perceived in daylighting has been established from literature. In addition to physical quantities commonly used indices, other variables, whether psychological,...

High dynamic range (HDR) imaging techniques are increasingly used by lighting researchers in building applications to capture luminances the field of view. This paper deals with photometric calibration and more particularly vignetting effect correction, which is one steps necessary ensure reliable data. The effects four similar devices (two identical fisheye lenses successively mounted on two cameras) were first determined for several apertures. symmetry, noninfluence color target,...

Abstract Scale models are used frequently to evaluate the daylighting performance of buildings. In order get accurate results, there several rules respect when building these scale models. Some universal, while others depend on measurement and observation devices, type sky under which study is carried out, objectives study. This paper, based author's experience a literature review, presents mock-up for studies. These illustrated by project examples that were tested Belgian artificial skies...

Exposure to daylight has much offer and should be optimised maximise its potential. In order harvest benefits, any visual discomfort from anticipated minimised. Hence, there is the need predict glare. While more than 20 models for predicting glare have been developed, none accurately it. The inclusion of additional factors in may improve predictions. One such factor socio-environmental context observer. This study compares evaluations office buildings four contexts: Chile, Belgium, Japan...

The design of a new sky simulator and its construction are described in detail. simulator, comprising 91 tungsten halogen lamps placed hexagonal array, is based on the modelling one patch Tregenza hemisphere distribution. This concept allows illuminance measurements from geometric configuration to be used for every model. sun which also comprised described. Parallax error measurement validation studies show that presents low errors. paper includes review existing skies suns.

For the application of discomfort glare metrics, a categorisation is used, dividing metric scale into categories perception.These are separated by borderline values, or so-called cut-off values.Recent literature shows that these values lower when they derived from field study data than those laboratory data.To investigate this further, one and two studies was used to derive compare corresponding three borderlines.The results show were systematically ones, implying reported at stimulus...

natural y las inclemencias del clima, se han generado formas de medición basadas en la ubicación geográfica, los horarios estados tiempo.El uso métricas dinámicas, que consideren factores permanente cambio, permite evaluar tipologías representativas edificios oficinas construidos Santiago.In the search for control of lighting and weather inclemency, systems measurement have been generated based on geographical location, times, conditions.The use dynamic measurements that consider factors in...