This paper presents a methodology for optimizing skylight design with the considerations of thermal comfort, daylight availability and energy performance by integrated daylight and thermal simulation. Dynamic thermal modelling programmed IES and daylight simulation engine Radiance are used as simulation tools to study energy performance of a shopping mall atrium with a skylight on the roof ...

Ovulation rate in gilts maintained under continuous light (daylight plus 118 to 130 lux of artificial light at night) for a complete oestrous cycle during the spring months was not significantly different from that in gilts maintained under normal daylight. Average ovulation rates were 13\m=.\4for controls and 13\m=.\1for treated gilts. A significant (P<0\m=.\01)difference in ovulation rate was...

nowadays, energy crisis is one of the most challenging issues regarding to contemporary architecture of developing countries such as iran. it is important to combine architecture and new technology to reduce energy consumption in educational and learning buildings those who are run in day-time period. therefore, the architecture of educational and learning building more than other types of offi...

Light plays an important role in the valuation of architectural elements, and it is a factor in designing spaces. Elements have no visual identity without light. This paper is intended to analyze the lighting in the vault of Shahrak-e-Gharb Jame Mosque with an emphasis on the role of daylight in order to find out how the designer has viewed the use of daylight in designing this mosque. The main...

Daylight is a dynamic source of illumination in architectural space, creating diverse and ephemeral configurations of light and shadow within the built environment. It can generate contrasting levels of brightness between distinct geometries or it can highlight smooth gradients of texture and color within the visual field. Although there are a growing number of studies that seek to define the r...

The differences included in the new version of the standard prEN15193-1 to calculate the LENI were analyzed, especially focusing on the approach to calculate the daylight supply factor (FD,S). The estimation of the daylight availability does not only rely on the calculation of the daylight factor but it also accounts for the climate, the orientation of openings, and the presence of mobile sun s...

Over half of the total electricity consumption is used in buildings. Air-conditioning and electric lighting are the two main resources of electricity consumption in high rise buildings. One way to reduce electricity consumption would be to limit heat gain into buildings, therefore reduce the demand for air-conditioning during hot summer months especially in hot regions. On the other hand natura...

Daylight in buildings is both aesthetically pleasing and a sustainable means of offsetting costs for space conditioning and electric lighting. However, poor use of daylight can cause glare that impedes worker productivity. Traditional means of predicting lighting levels for indoor spaces through simulation are timeconsuming, which inhibits exploration of daylighting potential in new buildings. ...