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ASSESSING DAYLIGHT IN DIFFICULT TO ILLUMINATE SPACES
Abstract
Building is constantly heading for the development of new technologies, better materials and reduction of energy consumption, however daylighting remains an essential factor that considerably affects the interior of buildings and it cannot be technologically improved or replaced. The total quality of the indoor environment is crucial to humans. Daylight is important not only from a psychological and health point of view, but also from the point of health standards. People who are forced to work in workplaces without daylight must not work longer than four straight hours. The quality of daylight indoor lighting depends on the daylight access possibilities as well as on the location where the building is located. It can be really very complicated to supply enough daylight into some interior spaces of buildings such as corridors or rooms in the middle of buildings. This article focuses on the possibilities of illuminating such difficult-to-illuminate spaces. The main attention is paid to the assessment of daylight illumination of indoor spaces where daylight is provided by tubular daylight guidance system. Showing a specific example of an atypical room with tubular daylight guidance system, daylight illumination is calculated using three calculating methods. The first method is the calculation of the daily illumination factor on the horizontal working surface using the method of doc. Ka?ka. The second method is the calculation of the illumination factor on the horizontal working surface presented by software HOLIGILM. The third method involves the simulated calculation of the daylight illuminance factor at the checkpoints based on WDLS software. The results of the calculations are then compared and the advantages and disadvantages of individual solutions are assessed.
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