Development of streets lighting in Kaunas City A.Vakys, R. Balsys, A. Mikulionis, V. Pak—nas, Kaunas University of Technology Department of Electrical

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Development of streets lighting in Kaunas City A.Vakys, R. Balsys, A. Mikulionis, V. Paknas, Kaunas University of Technology Department of Electrical and Lighting Engineering KTU Slide 2 Brocken luminaires of stairs lighting KTU Slide 3 Slide 4 It was more for trees lighting KTU Slide 5 Slide 6 Number of traffic accidents in Kaunas during which people have suffered KTU Slide 7 Slide 8 Electric energy saving: Installing efficient lamps, Usage of light dimming systems, Using efficient luminaires. KTU Slide 9 Incandescent Lamp Light output 15-20 lm/W Service time about 1000 h KTU Slide 10 Mercury Lamps Light output 20-60 lm/W Service time about 15 000 h KTU Slide 11 Metal Halide Lamps Light output 60 -90 lm/W Service time about 10 000 h KTU Slide 12 Sodium Lamps Light output 80 130 lm/W Service time about 24 000 h KTU Slide 13 Slide 14 THE RESULTS OF FIRST STREET LIGHTING RENOVATION No. Description Units Results Before renovation After renovation 1. Number of luminaires p.c.s 16000 16000 2. Installed power of lamps kW 4880 1920 3. Electric energy consumption kWh 10 075 783 3 970 924 4. Electric energy saving kWh 6 104 859 60 KTU Slide 15 Slide 16 Slide 17 Slide 18 Slide 19 Lighting regulation diagram KTU Slide 20 Prospects of Kaunas City lighting KTU Lighting installations Number Installed power, kW Investment (LTL thousand) Light dimming and control 28932614 700 Parks and squares161701 800 Architectural units362013 700 Conflict zones200501 500 Yards and pedestrian ways ????? Slide 21 Slide 22 Slide 23 THANK YOU A.Vakys, R. Balsys, B.A. Mikulionis, V. Paknas, KTU Department of Electrical and Lighting Engineering KTU