ARP 035: UPDATE AND GENERATING COST COMPARISONS

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1 ARP 035: UPDATE AND GENERATING COST COMPARISONS AMEU AFFILIATES/GOOD HOPE BRANCH S 189 TH GENERAL MEETING PINE LAKE MARINA RESORT, SEDGEFIELD 14 NOVEMBER 2014 Prepared by M. Cronjé, Pr Tech Eng, FIESSA Manager: Applications and Training

2 AGENDA 1. The new ARP What is sustainable lighting? 3. The ARP 035 cost comparisons 4. Benefits of TCO approach 5. Conclusion

3 Guidelines for the installation and maintenance of street lighting Scope This recommended practice discusses the need for, and the advantages of, installing public street lighting. Street lighting promotes better traffic flow, improves the appearance of city centres and residential areas and is a major deterrent to crime and vandalism.

4 Design parameters Electric light sources and control gear Luminaires Lighting columns Reticulation Maintenance Vehicles, plant and safety procedures applicable to the maintenance of street lighting Training Personnel and safety requirements Bibliography

5 Adjudicating tenders based upon the performance of luminaires from various manufacturers, utilizing the same lamp source A design criteria, design results and price schedule form, per type of luminaire and lamp type, should be used. Each tenderer should then be requested to complete this form, based upon the design results achieved with their relevant luminaire. The design results will indicate pole spacing, which should then be converted into a scheme price per kilometre, where a given price per installed pole forms part of the scheme price. Tenderers should be requested to submit their electronic data files, including the original source data, in hard copy format, issued by an accredited test facility, together with the actual designs, in electronic format.

6 Considerations for light distribution and glare restrictions For class B roads (residential roads) there are no recommendations given in SANS for glare restrictions. - strive to ensure that street lighting luminaires (excluding post top luminaires) used for class B roads should comply with the following maximum luminous intensities measured in cd/klm: a) maximum peak intensity shall not exceed 75º from the downward vertical; b) 200 cd/klm shall be at a vertical angle of 80º; and c) 50 cd/klm shall be at a vertical angle of 90º. In all cases, the specified vertical angles should apply in all horizontal angles around the centre of the luminaire and the luminous intensities at a vertical angle of 95º and higher should be zero.

7 Lamps Light emitting diodes (LEDs) a) efficacy (initial) : 90 lm/w to 150 lm/w b) economic life : Up to h c) colour-rendering index : 65 to 95 d) correlated colour temperature : 2700 K to K Substantial energy savings can be achieved with LED streetlights when compared to conventional streetlights mostly due to the small form factor of the LED. With various optical lenses the light can be controlled very precisely and projected on the area of application (high utilization of light). Almost all lighting requirements can be achieved in a much more efficient way than with conventional light sources. And with continuous future efficacy improvements the LED streetlights will be the most energy efficient solution.

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9 Luminaires Particular construction requirements of LED luminaires The luminaire should be robustly constructed from marine grade (LM6) die-cast aluminium The luminaire should be designed to enable ease of maintenance and replacement on site of the LED photometric engine without having to remove the whole luminaire, to allow integration of future technological development of LEDs and power supply. The LED optical unit should be completely sealed with a smooth, clear tempered glass protector, or impact resistant, non-degrading, material, to IP 66 tightness to maintain its photometric performance over its rated life. Attachment of the luminaire base casting to its bracket arm should be by means of at least two stainless steel M8 grub screws into stainless steel sockets or any other methods to prevent cathodic corrosion between stainless steel and aluminum

10 Luminaires Particular construction requirements of LED luminaires The luminaire should incorporate a surge protection device mounted inside the gear compartment to withstand surges of up to 10 kv/10 ka and should be easily replaceable. Thermal management The cooling fins should be designed in such a manner to prevent the accumulation of dirt, Heat from the LED source should take the shortest path to the exterior by direct conduction or any other reliable form of cooling that will not compromise the useful life of the LEDs. The printed circuit board (PCBs) should be fitted with temperature sensor that reduces the current to prevent any accidental overheating of the LEDs at higher than rated ambient temperatures.

11 Luminaires Particular photometric requirements for LED luminaires The luminaire should incorporate high power LEDs with a colour temperature of between K and K, at a colour rendering index Ra 70. The total system efficiency should be at least 70 lm/w at the specified performance temperature (tq). The luminaire should maintain at least 70 % of its initial luminous flux (L70) after 60,000 h of

12 WHAT IS SUSTAINABLE LIGHTING AND LOW CARBON FOOTPRINT?

13 Whichever lighting solution is chosen, it should be a sustainable one

14 What is a sustainable lighting solution? 1) It is one that is driven by carbon foot print 2) It is one that uses the least amount of energy 3) It is one that poses no harmful substances to the environment 4) It is one that is long lasting with low maintenance costs 5) It is one with easily recyclable materials 6 trees are needed to offset 1 ton of CO2 after 10 years

15 4000 hrs./year 25 years 2739 kg A total of 2.7 tons CO 2

16 Low Carbon Lighting Summary To reduce the carbon footprint, reduce the usage! When considering technology options we need to consider the lighting first Low power consumption does not always mean good lighting Low power now might not mean lowest power in future!

17 PRICE COMPARISONS IN ARP 035: COST OF OWNERSHIP

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20 ARP SPREADSHEET

21 BENEFITS OF TCO APPROACH

22 CONTENTS TCO: total cost of ownership HID-LED comparison 22

23 TCO: TOTAL COST OF OWNERSHIP Cost Total cost Investment Running costs & maintenance (+ inflation & energy index) Installation lifetime

24 TCO: TOTAL COST OF OWNERSHIP Cost Total cost #1 Total cost #2 ROI (return on investment) Installation lifetime

25 IN WHICH SITUATIONS? Renewing of a lighting installation: - Calculate time of ROI - Compare several alternatives (dimming, luminaires ) New installation: - Determine the solution with the lowest overall cost - Consider higher investments to lower energy consumption

26 NECESSARY INFORMATION? Type of calculation Per kilometre (road) or per configuration (other) General Country of installation Cost of kwh Inflation rate, energy index, actualization rate Duration of calculation Project Number of luminaires, spacing, power Costs (luminaires, maintenance, installation ) Utilization Night profile, or per hour Dimming, CLO,

27 TCO CALCULATION Total Cost MC12 FALCO TECEO AMPERA ULYSSE

28 CONCLUSION

29 ADVANTAGE OF REPLACING CONVENTIONAL WITH LED: 1. Reduced maintenance costs LED lasts 25 years 2. By using white light instead of yellow light, will create the impression of an installation that would be better lit even if lighting levels are of the same level under low lighting levels eye sensitivity shifts towards blue end of visible spectrum making it better performing under lighting with more blue in the spectrum 3. Better colour rendering LED CRI = >70 4. Reduced power consumption LED up to 78% less than HID 5. Environment friendly installation, LED contains no mercury and no UV and no IR 6. Easily dimmable and can easily be integrated with lighting control management systems 7. By using cost comparisons, end user can see that although capital cost of LED solutions is much higher in some cases, the total cost can be much lower

30 Thank you for your attention!