"Ostrava" . "Sokansk\u00FD, Karel" . . . . "[7BF19A39D07E]" . . "RIV/61989100:27240/13:86086710" . . . "Kouty nad Desnou" . "978-80-248-2988-3" . . . "27240" . . "Proceedings of the 14th International Scientific Conference Electric Power Engineering 2013" . "RIV/61989100:27240/13:86086710!RIV14-MSM-27240___" . "Software calculation tool for light savings in the buildings compared with real measured data"@en . . "Software calculation tool for light savings in the buildings compared with real measured data"@en . . "This paper describes modeling of possible savings in lighting systems of artificial lighting, working in combination with daylight. The proposed model works with overcast sky daylight (CIE). Based on knowledge of geographical position, day and time, the calculations are done in the conditions of unshadowed outdoor illuminance levels. From this figure (when daylight factor is known) illuminance caused by daylight can be gain in the different parts of the room. By controlling the artificial lighting (dimming) to constant cumulative value (daylight plus artificial light) in the areas of visual tasks, then it is possible to determine potential of savings in areas with controlled lighting system and without it. According to this model (calculation), we can consider a suitability of the dimmable lighting systems in the specific work areas and make recommendations to reduce energy requirements of buildings in energy audits. The sample model was compared with measurement of illuminance in the model room. The dimmed lighting systems was controlled by the KNX system via the light sensor."@en . "Software calculation tool for light savings in the buildings compared with real measured data" . "2013-05-28+02:00"^^ . "Carbol, Zbyn\u011Bk" . . "Software calculation tool for light savings in the buildings compared with real measured data" . "4"^^ . . . "This paper describes modeling of possible savings in lighting systems of artificial lighting, working in combination with daylight. The proposed model works with overcast sky daylight (CIE). Based on knowledge of geographical position, day and time, the calculations are done in the conditions of unshadowed outdoor illuminance levels. From this figure (when daylight factor is known) illuminance caused by daylight can be gain in the different parts of the room. By controlling the artificial lighting (dimming) to constant cumulative value (daylight plus artificial light) in the areas of visual tasks, then it is possible to determine potential of savings in areas with controlled lighting system and without it. According to this model (calculation), we can consider a suitability of the dimmable lighting systems in the specific work areas and make recommendations to reduce energy requirements of buildings in energy audits. The sample model was compared with measurement of illuminance in the model room. The dimmed lighting systems was controlled by the KNX system via the light sensor." . . "4"^^ . "106041" . "Dimming; Indoor lighting; overcast sky; Daylight; Savings"@en . "Nov\u00E1k, Tom\u00E1\u0161" . "S" . . "000321920400133" . . . "Vysok\u00E1 \u0161kola b\u00E1\u0148sk\u00E1 - Technick\u00E1 univerzita Ostrava" . . "\u0160umpich, Jan" . . "4"^^ . .