Direct solar irradiance may cause thermal discomfort, even in winter when the ambient temperature is low and especially for high-altitude locations with a high intensity of solar radiation. Thus winter solar shading might be required and, if used, must achieve a balance between the prevention of the transmittance of solar irradiance, the utilization of passive solar heat and the supply of adequ...

This paper presents a study on the use of optical fiber and a solar concentrator for a building daylighting system. Daylighting is essential for improving indoor environments and reducing electric lighting power consumption in office buildings. Traditionally, optical fiber daylighting systems were implemented only on a small scale. More complicated technologies are required for more amounts of ...

In this paper, we present a design and optical simulation of a daylighting system using a novel design of linear Fresnel lens, which is constructed based on the conservation of optical path length and edge ray theorem. The linear Fresnel lens can achieve a high uniformity by using a new idea of design in which each groove of the lens distributes sunlight uniformly over the receiver so that the ...

An essential impact which can improve the indoor environment and save on power consumption for artificial lighting is utilization of daylight. Optical fiber daylighting technology offers a way to use direct daylight for remote spaces in a building. However, the existing paradigm based on the precise orientation of sunlight concentrator toward the Sun is very costly and difficult to install on t...

From a practical point of view, daylighting in architecture uses the visible spectrum of solar energy directly and efficiently. It offers potential to decrease the energy consumption of a building and enhance the aesthetics of indoor spaces. Optimisation of daylighting can be roughly divided into two approaches, or a combination of the two in one project: First, the shape of the building can be...

From a practical point of view, daylighting in architecture uses the visible spectrum of solar energy directly and efficiently. It offers potential to decrease the energy consumption of a building and enhance the aesthetics of indoor spaces. Optimisation of daylighting can be roughly divided into two approaches, or a combination of the two in one project: First, the shape of the building can be...

This paper presents our research and development of system interfaces between Building Information Modeling (BIM) and Building Energy Modeling (BEM), for supporting integrated architectural design and energy simulation. Our methods utilize the BIM authoring tools’ Application Programming Interface (API) to translate BIM into Object-Oriented Physical Models (in Modelica) for building thermal sim...

Accurately simulating the effects of daylighting has numerous benefits. It allows building planners to take into account how bright a room will naturally be and estimate how warm the room will get due to the daylight. A system has been created by another research group which can simulate daylighting in a digitally-designed room. The system is known as LightSolve Viewer (LSV). This paper will pr...