Eliza Szczepańska-Rosiak
Czasopismo Techniczne, Budownictwo Zeszyt 3-B (8) 2014, 2014, s. 195 - 203
https://doi.org/10.4467/2353737XCT.14.237.3325The paper presents the effect of using additional daylight illumination of building interiors using tubular skylight systems. Interior illuminance distribution was analysed using a combination of two daylight sources – window and skylight pipes. The results were obtained for cloudy weather conditions. Final remarks concern the effectiveness of supplementary daylighting of interiors using different configurations of light pipes.
Eliza Szczepańska-Rosiak
Czasopismo Techniczne, Budownictwo Zeszyt 2-B (12) 2015, 2015, s. 331 - 342
https://doi.org/10.4467/2353737XCT.15.141.4178This paper presents a numerical analysis of the daylighting of exemplary office interiors. Simulation results were obtained using a radiance model. The following indexes: UDI, DF, DA, DSP were calculated and analysed for different solutions of building façade. The construction differs in the total thickness of the wall. Two cases were considered: 25 cm and 50 cm opaque sections. Additionally, window magnitude changes from 0.36 m2 to 1.44 m2, with different shapes and locations relative to the centre of the wall. The idea of the work was to find out the architectural solution of the transparent element (geometry and magnitude) taking into account two criteria: decreasing solar heat gains; increasing the daylight utilisation factor. The results are presented in the form of a diagram of daylight distribution as well as average values of visual comfort indexes. The highest values of each indicator (DF, DA and DSP) were obtained for a centrally placed window 1.44 m2. However, the results of useful daylight index UDI depend on the assumed range and it is not easy to identify a relationship between window size and daylight efficiency.