LED Streetlighting. I. How can light be controlled? II. Reflector or Lens? III. Engineered LED Streetlighting IV. Product Development V.

Transcription

1 LED Streetlighting I. How can light be controlled? II. Reflector or Lens? III. Engineered LED Streetlighting IV. Product Development V. References WE-EF

2 LED Streetlighting How can light be controlled? Commonly used lamps in streetlighting: Mercury Vapour (MV) High Pressure Sodium (HPS) Fluorescent (LL und TC) Metal Halide (HIT) Cosmopolis (CPO) Light Emitting Diodes (LED) WE-EF

3 LED Streetlighting How can light be controlled? Lumen/Watt Little development in the efficacy of Mercury Vapour lamps. Moderate increase in the efficacy of Metal Halide, High Pressure Sodium and Compact Flourescent Lamps Significant increase in the efficacy of LEDs within a short period of time. Lamps and their relative efficacy WE-EF

4 LED Streetlighting How can light be controlled? Conventional streetlighting luminaires have used aluminium reflectors to control the light. Regardless of how good the reflector is, there are efficiency losses due to; Reflection (indirect)... Abschirmung Shielding... ungerichteter Spill Direktanteil... Reflektion Reflection Spill (direct) These are of course influenced to some degree by the lamp, shape and material of the reflector. WE-EF

5 LED Streetlighting How can light be controlled? CAD constructed and optimised reflector, designed especially for ceramic metal halide lamps. High LOR (light output ratio), precise light control No light above 90 (from nadir) Controlled light pattern, in particular in the critical glare angles of (from nadir) WE-EF

6 LED Streetlighting How can light be controlled? Light loss via:... Transmission LED engineered luminaires have the advantage that the light can be controlled by a lens not a reflector. The light can therefore be directed more efficiently at the object or area in question. The optical lens is as a rule constructed of a clear glass PMMA (acrylic), which has an optical efficiency of around 98 %. If you compare reflector based optical systems with LED lens technology, an LED luminaire theoretically requires 25 % less lumens than conventional reflector engineered streetlighting. WE-EF

7 LED Streetlighting How can light be controlled? LEDs are a point source. Using a lens based system means simply better light control. Benefit; Less light trespass (Spill) Less light pollution (Dark Sky) Improved efficiency Energy and CO 2 savings WE-EF

8 LED Streetlighting Reflector or Lens? Important note: Broad comparisons centered on the theoretical advantages of LED luminaires versus conventional reflector engineered luminaires should be taken as general assumptions only Evaluating an LED solution and comparing this to a reflector based solution is best done project to project. WE-EF

9 LED Streetlighting Reflector or Lens? Multiple Spot There are two industry methods by which the optics of the LEDs can be utilized: The Multiple Spot option means aiming of the individual LEDs to realise the required distribution. As you can see in the diagram, luminaires using the multiple-spot technique experience failures in uniformity over time WE-EF

10 LED Streetlighting Reflector or Lens? Multiple Layer There are two industry methods by which the optics of the LEDs can be utilized: The Multiple Layer option has every LED distributing the light in exactly the same way; this secures the distribution of light for the life of the installation. WE-EF

11 LED Streetlighting Engineered LED Streetlighting Value added engineering: Long lifetime of LEDs. LEDs used frequently for effect and marker lighting LEDs now competing against conventional HID light sources. LEDs require a new kind of thinking. WE-EF

12 LED Streetlighting Engineered LED Streetlighting Mechanical and Electrical Considerations LEDs are very heat sensitive and can only operate at optimal effiency within a particular temperature range. Thermal management is critical. WE-EF are developing and engineering streetlighting luminaires specifically designed for LEDs. Lighting Performance Currently clusters of LEDs are used to match a single conventional light source. A single luminaire with a cluster of LED s may draw more power than a single HID luminaire. However, due to significantly wider spacings and less maintenance with the LED installation, power overall is reduced. The energy, cost and environmental assessment must be based on the entire project. WE-EF

13 LED Streetlighting Engineered LED Streetlighting Cathode Lead Housing Lens LED-Chip Thermal Heat Sink Bond Wire What LEDs are being used? Type? Manufacturer? Technical Data available? What is the Junction Temperature during stable operation and between 8 24 hours of continual operation? This is important for the lifetime of the LED and can influence the light output during operation. On what basis are these measurements taken i.e Ambient Temperature 15 or 25 C? WE-EF

14 LED Streetlighting Engineered LED Streetlighting How is the Failure Rate and the Lumen Depreciation (Degradation) defined? WE-EF test and report in line with TM21 LM80-08 (see WE-EF Technical Information LED ) With what current are the LED s powered e.g. 350 ma, 700 ma or 1000 ma? This is important because a linear calculation comparing for example 700 ma with 350 ma is not possible. A change in current alters all the parameters. A complete new assessment must be made. WE-EF

15 LED Streetlighting Engineered LED Streetlighting Why is the assessment of this concept so confusing? Because of the assumption that we can compare HID lamps with LEDs directly, using the same criteria. The rules are different! What is the result? One can only compare projects with similar parameters. WE-EF

16 LED Streetlighting Engineered LED Streetlighting Possible today to implement LED Streetlighting and fullfill the various norms such as DIN EN for main and minor roads LED lens systems posses high optical efficency Visual comfort crtical. WE-EF

17 LED Streetlighting Product Development (Summary) Series Siz es RFL530-SE / VFL530-SE / VFL530 RFL540-SE / VFL540-SE VFL540 PFL240 Number of LEDs Forwa rd Current ma Wa t t s Lumens WE-EF

18 LED Streetlighting Product Development (Summary) Features RFL500 LED Series VFL500 LED PFL200 LED OLC Technology Yes Yes Yes [S60] Lens Yes Yes Yes [S65] Lens Yes Yes Yes [S70] Lens Yes Yes Yes [A60] Lens Yes Yes Yes [R65] Lens Yes Yes Yes RFC Technology No (Non-reflecting safety glass lens) Yes Yes Eco Step Dim (Motion, Basic, Advanced Yes Yes Yes and Dynamic) Thermal Management Yes Yes Yes Thermal Management + Yes (Optional Extra) Yes (Optional Extra) Yes (Optional Extra) LED (Standard) Cree XP-G 3000 K and (4000 K) Cree XP-G 3000 K and (4000 K) Cree XP-G and XM-L 3000 K and (4000 K) Lifetime > hrs Lifetime > hrs Lifetime > hrs Ta 25 C (TM21 LM-80-08) Ta 25 C (TM21 LM-80-08) Ta 25 C (TM21 LM-80-08) Forward Current (Standard) 350mA 700 ma 350mA 700mA 700mA 1000mA Control Gear Lifetime > hrs Ta 25 C Lifetime > hrs Ta 25 C Lifetime > hrs Ta 25 C Application Higher wattage e.g. Main Streets, Carparks Lower wattage e.g Pedestrian Areas Higher wattage e.g. Main Streets, Carparks WE-EF

19 LED Streetlighting Product Development (OLC Technology) Multiple Spot Multiple Layer (WE-EF) All the lenses produce identical light distributions, which are placed one on top of the other in layers. The sum of all layers gives a uniform illumination which remains constant even when individual LEDs are switched off. The One LED Concept Technology is future proof. Due to standardised module/parts, new modules/parts with less LEDs and less energy, but more light can be retrofitted. WE-EF

20 LED Streetlighting Product Development (OLC Technology) The unique butterfly lens lies at the heart of OLC Technology Five lenses available [S60] [S65] [S70] [A60] [R65] This could be adapted WE-EF

21 LED Streetlighting Product Development (OLC Technology) WE-EF

22 LED Streetlighting Product Development (OLC Technology) WE-EF

23 LED Streetlighting Product Development (RFC Technology) The unique outer lens minimises the amount of light that is reflected back into the luminaire Approx. 20% improvement in the transmission of light at 60 Approx. 30% improvement in the transmission of light at 70 Approx. 5% increase in the LOR WE-EF

24 LED Streetlighting Product Development (Thermal Standard) LED Board Built in reverse voltage protection Bypass device. If one LED fails, it is removed from the circuit guaranteeing the remaining LEDs continue to function WE-EF

25 LED Streetlighting Product Development (Thermal Standard) LED Board LEDs undergo an ageing process similar to conventional lamps, i.e. the initially available nominal luminous flux decreases the longer the LED is in operation. The lower the LED's thermal load, the lower the reduction in luminous flux. The diagram above illustrates the dependency of an LED's luminous flux on the operating duration and the average (outside) ambient temperature 25 C at an operating current of 700 ma. This diagram can be used to calculate the luminous flux that can be expected after a certain operating period. Lifetime > hrs Ta 25 C Typical (Tj 84 C to 87 C) Measurement and calculation according to: - TM21 LM80-08 Based on XP-G and WE-EF [S] and [A] Luminaires measured to over hrs See WE-EF Technical Information LED WE-EF

26 LED Streetlighting Product Development (Thermal Standard) Control Gear Ta [ C] Lifetime* [1000h] 25 >50 30 >50 35 > * Measurement and calculation according to; DIN EN , DIN EN Integral thermal switch protects against over temperature operation e.g. excessive ambient temperature Defined as the predicted point when 10% failures will occur. This life rating is specific to the RFL500 luminaire and is based on the module operating in the luminaire and in the stated temperatures'. > 40,000 hours (Ta 40 C) > 50,000 hours (Ta 25 C) WE-EF

27 LED Streetlighting Product Development (Thermal +) Optional Extra NTC (Negative Temperature Coefficient) thermocouple monitoring of LEDs to a preprogrammed and safe level; in the event of overheating (say operating during daytime) the lumen output will be reduced by 50%. WE-EF

28 LED Streetlighting Product Development (Eco Step Dim ) Eco Step Dim Basic A factory programmed Electronic Controller is fitted in the luminaire to reduce luminous flux and power to a preset value. Control phases such as those that are, for example, used in networks using luminaires with two conventional lamps is required to activate the switch. One step dimming only is available. As standard, lumen output is reduced to 50 per cent. Intermediate values (e.g., 25 per cent) may also be optionally realised by agreement. WE-EF

29 LED Streetlighting Product Development (Eco Step Dim ) Eco Step Dim Motion A movement sensor is attached to the pole for controlling individual or groups of LED luminaires. Starting with a basic luminous flux (factory setting 55 per cent light output and 50% power), the luminous flux temporarily increases to 100 per cent when needed (factory setting: 5 minutes). It is always used in conjunction with luminaires from the modified Eco Step Dim Basic range. Sensitivity and switching times (minimum 1 minute maximum 15 minutes) may be easily adapted on site. (available from 4th Quarter 2013) WE-EF

30 LED Streetlighting Product Development (Eco Step Dim ) Eco Step Dim Advanced A factory programmed Electronic Controller is fitted in the luminaire to reduce the luminous flux and power. The luminaires are operated in stand-alone mode, so no special supply and/or control cables are required. Up to five different dimming levels (D1-D5) may be individually and optionally specified for a maximum of five time periods (T1-T5). Set and programmed at the factory by agreement. Reprogramming on site is also possible. WE-EF

31 LED Streetlighting Product Development (Eco Step Dim ) Eco Step Dim Dynamic A complete lighting management system. Programming is done via a control system, which includes dimmable Electronic Control gear, LON Power Line interface and Data Controller (Optional). Remote centralised management. System permits bi-directional communication. Optional components are available for the installation of the system and are available on request. WE-EF

32 LED Streetlighting Product Development (RFL500 LED Serie) RFL530-SE 12 W or 24 W (350 ma) Each LED 1 W, generates 135 lm (4000 K) [S60] [S65] [S70] [A60] [R65] Lens with OLC Eco Step Dim Integrated Heat Sinks Spigot 42mm OD IK 08 (Resistance against impacts with an energy up to 5,00 J) WE-EF

33 LED Streetlighting Product Development (RFL500 LED Serie) RFL530-SE 24 W or 48 W (700 ma) Each LED 2 W, generates 252 lm (4000 K) [S60] [S65] [S70] [A60] [R65] Lens with OLC Eco Step Dim Integrated Heat Sinks Spigot 60mm OD IK 08 (Resistance against impacts with an energy up to 5,00 J) WE-EF

34 LED Streetlighting Product Development (RFL500 LED Serie) RFL540-SE 36 W or 48 W (350 ma) Each LED 1 W, generates 135 lm (4000 K) [S60] [S65] [S70] [A60] [R65] Lens with OLC Eco Step Dim Integrated Heat Sinks Spigot 60mm OD IK 08 (Resistance against impacts with an energy up to 5,00 J) WE-EF

35 LED Streetlighting Product Development (RFL500 LED Serie) RFL540-SE 72 W or 96 W (700 ma) Each LED 2 W, generates 252 lm (4000 K) [S60] [S65] [S70] [A60] [R65] Lens with OLC Eco Step Dim Integrated Heat Sinks Spigot 60mm OD IK 08 (Resistance against impacts with an energy up to 5,00 J) WE-EF

36 LED Streetlighting Product Development (RFL500 LED Series) WE-EF

37 LED Streetlighting Product Development (RFL500 LED Series) WE-EF

38 LED Streetlighting Product Development (RFL500 LED Series) WE-EF

39 LED Streetlighting Product Development (RFL500 LED Series) Future Proof Integrated Heat Sinks No No-Tool Latch Device LED board is directly fixed to the housing and can be individually replaced from below Integrated heat sinks means increased volume for heat sinking (excellent heat management and thermal properties) Ease of entry to gear and lamp chamber WE-EF

40 LED Streetlighting Product Development (RFL500 LED Series) Features Four piece high pressure die cast aluminium construction with integrated heat sink Marine grade ALSi12/LM6/CP401 aluminium alloy CCG controlled compression gasket PCS (polymer coated system) stainless steel fasteners Frame is hinged with No Tool latch device for opening. IP66 protection rating for complete luminaire High ambient temperature rating 25 C Optical grade PMMA Lenses Benefits Body and frame are HPDC; precision, strength, repeatability, low tolerance. Optimal thermal management for LED and control gear Excellent corrosion protection One piece extruded silicone gasket operates with controlled compression for longer life and maintained through life IP rating. 15% Teflon for friction reduced action and reduced risk of binding. Reduced friction between male and female thread causes tighter fit between connected parts. Prevents galvanic corrosion that otherwise occurs, when metals of dissimilar electronegatives are in contact Ease of entry to gear and lamp chamber Dust tight and high pressure water jet tight; long life, suitable for commercial and industrial applications, improved seal quality means less internal pollution and higher maintenance factors High reliability, extended component life High Optical Efficiency of over 98%. Greater spacing. Option [S60] [S65] [S70] [A60] and [R65] Lens Removable LED boards High efficiency, High quality, High output LED s. Built in thermal management system eg. Thermocouple monitoring to a pre-programmed and safe level (optional) Option 3000 K, 4000 K Choice and flexibility in the design process. Suitable for a wide range of street and area lighting situations i.e. optimised for luminance (S60/S65) or optimised for illuminance (S70). Future proof. New boards with less LEDs and less energy but higher light output can be retrofitted On average 70% Lumen maintenance > hrs. Lifetime not affected by on/off switching Controls temperature variations, to protect LEDs from overheating 4000 K, (4000 K Standard) Ability to match other light sources in the design process and balance efficency and ambience 36 W to 96 W LED arrays Flexibility in lighting design. WE-EF

41 LED Streetlighting Product Development (VFL500 LED Series) VFL W or 24 W (350mA) Each LED 1 W, generates 135 lm (4000 K) [S60] [S65] [S70] [A60] [R65] Lens with OLC and RFC Eco Step Dim Integrated Heat Sinks Spigot 76mm OD (Standard) or 60mm OD. To be specified at order placement IK 08 (Resistance against impacts with an energy up to 5,00 J) WE-EF

42 LED Streetlighting Product Development (VFL500 LED Series) VFL W or 48 W (700 ma) Each LED 2 W, generates 252 lm (4000 K) [S60] [S65] [S70] [A60] [R65] Lens with OLC and RFC Eco Step Dim Integrated Heat Sinks Spigot 76mm OD (Standard) or 60mm OD. To be specified at order placement IK 08 (Resistance against impacts with an energy up to 5,00 J) WE-EF

43 LED Streetlighting Product Development (VFL500 LED Series) VFL W, 36 W or 42 W (350mA) Each LED 1 W, generates 135 lm (4000 K) [S60] [S65] [S70] [A60] [R65] Lens with OLC and RFC Eco Step Dim Integrated Heat Sinks Spigot 76mm OD (Standard) or 60mm OD. To be specified at order placement IK 08 (Resistance against impacts with an energy up to 5,00 J) WE-EF

44 LED Streetlighting Product Development (VFL500 LED Series) VFL W, 72 W or 84 W (700 ma) Each LED 2 W, generates 252 lm (4000 K) [S60] [S65] [S70] [A60] [R65] Lens with OLC and RFC Eco Step Dim Integrated Heat Sinks Spigot 76mm OD (Standard) or 60mm OD. To be specified at order placement IK 08 (Resistance against impacts with an energy up to 5,00 J) WE-EF

45 LED Streetlighting Product Development (VFL500 LED Series) WE-EF

46 LED Streetlighting Product Development (VFL500 LED Series) VFL530-SE 12 W or 24 W (350mA) Each LED 1 W, generates 135 lm (4000 K) [S60] [S65] [S70] [A60] [R65] Lens with OLC and RFC Eco Step Dim Integrated Heat Sinks Spigot 42 x 100 mm IK 08 (Resistance against impacts with an energy up to 5,00 J) WE-EF

47 LED Streetlighting Product Development (VFL500 LED Series) VFL530-SE 24 W or 48 W (700 ma) Each LED 2 W, generates 252 lm (4000 K) [S60] [S65] [S70] [A60] [R65] Lens with OLC and RFC Eco Step Dim Integrated Heat Sinks Spigot 42 x 100 mm IK 08 (Resistance against impacts with an energy up to 5,00 J) WE-EF

48 LED Streetlighting Product Development (VFL500 LED Series) VFL540-SE 24 W, 36 W or 42 W (350mA) Each LED 1 W, generates 135 lm (4000 K) [S60] [S65] [S70] [A60] [R65] Lens with OLC and RFC Eco Step Dim Integrated Heat Sinks Spigot 60 x 100 mm IK 08 (Resistance against impacts with an energy up to 5,00 J) WE-EF

49 LED Streetlighting Product Development (VFL500 LED Series) VFL540-SE 48 W, 72 W or 84 W (700 ma) Each LED 2 W, generates 252 lm (4000 K) [S60] [S65] [S70] [A60] [R65] Lens with OLC and RFC Eco Step Dim Integrated Heat Sinks Spigot 60 x 100 mm IK 08 (Resistance against impacts with an energy up to 5,00 J) WE-EF

50 LED Streetlighting Product Development (VFL500 LED Series) WE-EF

51 LED Streetlighting Product Development (VFL500 LED Series) WE-EF

52 LED Streetlighting Product Development (VFL500 LED Series) WE-EF

53 LED Streetlighting Product Development (VFL500 LED Series) Future Proof Integrated Heat Sinks IP68 Quick Connection LED board is directly fixed to the housing and can be individually replaced from below Integrated heat sinks means increased volume for heat sinking (excellent heat management and thermal properties) Easy and safe installation. Luminaire is prewired and does not need to be opened for installation. WE-EF

54 LED Streetlighting Product Development (VFL500 LED Series) Features Two piece high pressure die cast aluminium construction with integrated heat sink Marine grade ALSi12/LM6/CP401 aluminium alloy CCG controlled compression gasket PCS (polymer coated system) stainless steel fasteners NB. External security fasteners IP68 quick connector IP66 protection rating for complete luminaire High ambient temperature rating 25 C Optical grade PMMA Lenses Benefits Body and frame are HPDC; precision, strength, repeatability, low tolerance. Optimal thermal management for LED s (entire body acts as a heat sink) Excellent corrosion protection One piece extruded silicone gasket operates with controlled compression for longer life and maintained through life IP rating. 15% Teflon for friction reduced action and reduced risk of binding. Reduced friction between male and female thread causes tighter fit between connected parts. Prevents galvanic corrosion that otherwise occurs, when metals of dissimilar electronegatives are in contact Easy and safe installation. Luminaire is prewired and does not need to be opened for installation. Dust tight and high pressure water jet tight; long life, suitable for commercial and industrial applications, improved seal quality means less internal pollution and higher maintenance factors High reliability, extended component life High Optical Efficiency of over 98%. Greater spacing. Option [S60] [S65] [S70] [A60] and [R65] Lens RFC Reflection Free Contour technique for S60, S65, S70, A60 and R65 lenses: UV stabilised acrylic panel with a contoured surface replaces the flat front glass panel. High efficiency, High quality, High output LED s. Built in thermal management system eg. Thermocouple monitoring to a pre-programmed and safe level (optional) Option 3000 K, 4000 K Choice and flexibility in the design process. Suitable for a wide range of street and area lighting situations i.e. optimised for luminance (S60/S65) or optimised for illuminance (S70). Inter-reflection is reduced resulting in significant performance improvements (+20% at 60 for the [S60],[S65] lens and +30% at 70 for the [S70] lens. Estimated LOR of +5%. Between 20-30% greater spacings verses flat glass. On average 70% Lumen maintenance > hrs. Lifetime not affected by on/off switching Controls temperature variations, to protect LEDs from overheating 4000 K (Standard) Ability to match other light sources in the design process and balance effiency and ambience 13 W to 96 W LED arrays Flexibility in lighting design. WE-EF

55 LED Streetlighting Product Development (PFL200 LED Series) PFL W, 72 W or 96 W (700 ma) Each LED 2 W, generates 235 lm (4000 K) [S60] [S65] [S70] [A60] [R65] Lens with OLC and RFC Eco Step Dim Integrated Heat Sink Spigot 76 x 80 mm IK 08 (Resistance against impacts with an energy up to 5,00 J) WE-EF

56 LED Streetlighting Product Development (PFL200 LED Series) PFL W, 108 W or 144 W (1000 ma) Each LED 3 W, generates 346 lm (4000 K) [S60] [S65] [S70] [A60] [R65] Lens with OLC and RFC Eco Step Dim Integrated Heat Sink Spigot 60 x 100 mm IK 08 (Resistance against impacts with an energy up to 5,00 J) WE-EF

57 LED Streetlighting Product Development (PFL200 LED Series) WE-EF

58 LED Streetlighting Product Development (PFL200 LED Series) Features Two piece high pressure die cast aluminium construction with integrated heat sink Marine grade ALSi12/LM6/CP401 aluminium alloy CCG controlled compression gasket PCS (polymer coated system) stainless steel fasteners NB. External security fasteners IP68 quick connector IP66 protection rating for complete luminaire High ambient temperature rating 25 C Optical grade PMMA Lenses Benefits Body and frame are HPDC; precision, strength, repeatability, low tolerance. Optimal thermal management for LED s (entire body acts as a heat sink) Excellent corrosion protection One piece extruded silicone gasket operates with controlled compression for longer life and maintained through life IP rating. 15% Teflon for friction reduced action and reduced risk of binding. Reduced friction between male and female thread causes tighter fit between connected parts. Prevents galvanic corrosion that otherwise occurs, when metals of dissimilar electronegatives are in contact Easy and safe installation. Luminaire is prewired and does not need to be opened for installation. Dust tight and high pressure water jet tight; long life, suitable for commercial and industrial applications, improved seal quality means less internal pollution and higher maintenance factors High reliability, extended component life High Optical Efficiency of over 98%. Greater spacing. Option [S60] [S65] [S70] [A60] and [R65] Lens RFC Reflection Free Contour technology for S60, S65, S70, A60 and R65 lenses: UV stabilised acrylic panel with a contoured surface replaces the flat front glass panel. High efficiency, High quality, High output LED s. Built in thermal management system eg. Thermocouple monitoring to a pre-programmed and safe level (optional) Option 3000 K, 4000 K Choice and flexibility in the design process. Suitable for a wide range of street and area lighting situations i.e. optimised for luminance (S60/S65) or optimised for illuminance (S70). Inter-reflection is reduced resulting in significant performance improvements (+20% at 60 for the S60/S65 lens and +30% at 70 for the S70 lens. Estimated LOR of +5%. Between 20-30% greater spacings verses flat glass. On average 70% Lumen maintenance > hrs. Lifetime not affected by on/off switching Controls temperature variations, to protect LEDs from overheating 4000 K (Standard) Ability to match other light sources in the design process and balance effiency and ambience 48 W to 144 W LED arrays Flexibility in lighting design. WE-EF

59 LED Streetlighting Project References WE-EF