Straight Talk About LED Luminaires. Terry Clark Founder & CEO Finelite, Inc.

Transcription

1 Straight Talk About LED Luminaires Terry Clark Founder & CEO Finelite, Inc.

2 Straight talk about LED luminaires Who is this guy and why is he qualified? Why are LED luminaires hard to get right? Five steps we can take right now. Page 2

3 Terry Clark Has 20 years in high tech and 25 years in lighting Focuses on Schools and Offices (Indoor only) Knows T8, T5, T5HO lamps and white LEDs Knows task lights and suspended, recessed, wall-mounted, surface-mounted luminaires with and without sensors and control Works with CEC & NYSERDA in data-driven research Is open to any of your questions Page 3

4 Why are LED luminaires hard to get right? Hype is a problem Many new technologies must work together We are missing critical standards It can be very costly to fix field problems Page 4

5 Hype is a problem LED lighting systems can cut lighting energy costs as much as 80% and drastically reduce maintenance costs A major U.S. corporation LEDs are a simple way to transform lighting and improve the well being of our environment. A major international corporation Our LED fixtures for commercial buildings use 25% - 50% less energy than fluorescents and last 5 times longer. A VC-financed LED luminaire manufacturer Page 5

6 Here is important data for you part lumens in one package Heat sinking and connections included 85 CRI great color consistency 2700K, 3000K, 3500K, 4100K B50 42,000 hours to L92 (Yes, 92%) Dimmable 10 day lead time Page 6

7 Here is important data for you part lumens in one package Heat sinking and connections included 85 CRI great color consistency 2700K, 3000K, 3500K, 4100K B50 42,000 hours to L92 (Yes, 92%) Dimmable 10 day lead time $1.80 each ($.0005 / lumen) Page 7

8 Here is important data for you part 3 Page lumens in one package Heat sinking and connections included 85 CRI great color consistency 2700K, 3000K, 3500K, 4100K B50 42,000 hours to L92 (Yes, 92%) Dimmable 10 day lead time $1.80 each ($.0005 / lumen) The DOE is targeting $.005 / lumen for the LED in 2015.

9 Here is important data for you part 4 4-foot Super T8 lamps (3,100 lumens) Available from GE, OSRAM, Philips 1.2 BF T8 ballasts 90K hrs at $10.00 each Dimming ballasts at $35 - $65 each Luminaires achieve 87.5% - 94% efficiency and deliver 85 to 92 lumens / watt Finelite will ship them to you in 10 days. Page 9

10 Page 10 Here is important data for you part 4A

11 Hype is a problem We are trying to cut 10 years off of the normal introduction cycle No one has time for qualifiers VCs are changing the dynamics Early adopters are being burned The noise is drowning out the fact that good work is being done to address key issues and that LEDs are ready today for SOME important applications Page 11

12 Hype is a problem Here is the potential result We are trying to cut 10 years off of the normal introduction cycle No one has time for qualifiers VCs are changing the dynamics Early adopters are being burned The noise is drowning out the fact that good work is being done to address key issues and that LEDs are ready today for SOME important applications On 4/16/10 the Edison Report says: Air Force Bans LEDs Page 12

13 Many new technologies must work together Total system or luminaire reliability is the product of all the individual reliability considerations as follows: R Luminaire = R LEDs * R optical * R PCB * R Finish * R mechanical * R Thermal * R Housing * R Gaskets * R Sealants * R Electrical * R Driver * R manufacturing SOURCE: Phillips Hadco Page 13

14 We are missing critical standards What we have: LM79 luminaire measurement standards LM80 LED test data collection & format set Energy Star and Lighting Facts Label What we are missing: How to relate LM80 to lumen depreciation for an LED How to relate LED lumen maintenance to luminaire lumen maintenance How to measure color quality (CQMS is in process) How to measure color shift over time How to enforce damages for outrageous claims Page 14

15 Page 15 Actual LM80 data up to 3,000 hours

16 Page 16 Actual LM80 data up to 6,000 hours (Energy Star Requirement)

17 Page 17 We are missing critical standards

18 Page 18 Actual LM80 data up to 10,000 hours

19 Page 19 We are missing critical standards

20 It can be very costly to fix problems: 3 examples Page 20 Issue #1: We are all familiar that current 4 fluorescent lamps turn off to let us know they are at the end of life. LEDs will not do this. This raises the very real question of how will the end user know it is time for a replacement?

21 Page 21 It can be very costly to fix problems: 3 examples

22 It can be very costly to fix problems: 3 examples Page 22 Issue #2: Whose responsibility is it to disclose the maintenance costs?

23 It can be very costly to fix problems: 3 examples Page 23 Issue #3: Color can shift over time with LEDs. If that happens, one segment failure means replacing the entire system

24 Five steps can we take right now 1. Focus on applications not technology 2. Learn best practices for your application 3. Know the language of LEDs 4. Get answers to these questions 5. Select your supply chain carefully Page 24

25 Page Focus on applications not technology

26 2. Best practice check list For each application, get the data on: Lighting performance (levels & quality) Energy use Costs (initial and maintenance) User preference Identify demonstrations Validate performance Keep it up-to-date Page 26

27 Breakthrough in General Lighting An Overview Page 27

28 Finding # 1 Light the task first Make LIGHTING THE TASK properly your FIRST priority! Use task lighting as the PRIMARY layer of light New, LED task luminaires provide the right amount of light exactly where you need it Old, fluorescent task luminaires simply do not work - Too much light - Too much glare - Too much energy Page 28 #1

29 Finding # 2 Light the vertical surfaces Page 29 #2

30 Finding # 3 Ambient light needs only 0.4 w/ft 2 When, Task lighting is correct, Vertical surfaces are lighted Then, Ambient lighting needs only 0.4 w/ft 2 Page 30 #3

31 Finding # 3 High-efficiency T8 luminaires Use high-efficiency pendant T8 luminaires with only 1-lamp in cross section 1-lamp T8 cross section Over 90 lumens/watt 12 to 16 ft on center 0.4 w/ft 2 works! 0.4 w/ft 2 $2.33/ft 2 installed cost Page 31 #3

32 Finding # 3 High-performance recessed luminaires High-performance recessed luminaires can also be used to provide ambient light at w/ft 2 2-lamp T BF - Over 80 lumens/watt - 8 x 10 on center spacing w/ft w/ft 2 works! 1-lamp T BF - Over 85 lumens/watt - 8 x 10 on center spacing w/ft 2 Page 32 Advantages of 1-lamp approach: - 50% fewer lamps - 20% energy savings over 2-lamp #3

33 Key results summary Three layers of light satisfy users at under 0.5 w/ft 2 When task lighting is not done properly, all carry part of the load User satisfaction is achieved with half of the energy used before Less material is used Fewer lighting controls are needed Installation costs are optimized Air conditioning loads are reduced Operating costs are slashed Page 33

34 Verify the quality: Task Task (fc) Luminance (cd/m 2 ) Page 34 Meets targets Luminance Uniformity Ratios Around Seating Area = 11:1 Across Broad Viewing Areas = 26:1

35 Verify the quality: Vertical Vertical (fc) Luminance (cd/m 2 ) Page 35 Meets targets Luminance Uniformity Ratios Around Seating Area = 33:1 Across Broad Viewing Areas = 1.3:1

36 Adding the layers and verify the quality: Task + Vertical Task + Vertical (fc) Luminance (cd/m 2 ) Page 36 Meets targets Luminance Uniformity Ratios Around Seating Area = 6:1 Across Broad Viewing Areas = 2.2:1

37 Verify the quality: Ambient Ambient (fc) Luminance (cd/m 2 ) Page 37 Meets targets Luminance Uniformity Ratios Around Seating Area = 5:1 Across Broad Viewing Areas = 0.5:1

38 Adding all the layers and verify the quality Task + Vertical + Ambient (fc) Luminance (cd/m 2 ) Page 38 Meets targets Luminance Uniformity Ratios Around Seating Area = 2.6:1 Across Broad Viewing Areas = 1.5:1

39 Key results energy savings Documented 56% TOTAL ENERGY SAVINGS Design Calculations and Installed Cost Estimates: Standard Practice: 1.1w/ft 2, 3-lamp T8 parabolic, 8 x 10 on center spacing, T8 Undercabinet task lights Breakthrough: 0.48w/ft 2, 1-lamp T8 indirect/direct pendant, 12 on center spacing, 6W LED Undercabinet task lights Page 39

40 Remember, know the costs for best practices Lower Installed Cost Design calculations and installed cost estimates Standard Practice: 1.1w/ft 2, 3-lamp T8 parabolic, 8 x10 on center spacing, T8 Undercabinet task lights Breakthrough: 0.48w/ft 2, 1-lamp T8 indirect/direct pendant, 12 on center spacing, 6W LED Undercabinet task lights Page 40

41 Remember, we ve been reviewing just ONE application Page 41

42 2. Best practice check list summary Document current best practice Compare LED-luminaires to best practices Set the criteria in advance Have the data to say go or slow Do this for every major application Share your data-based results Page 42

43 3. Know the language of LED systems Here are important sources: 1. DOE CALiPER Program 3. IES PNNL Finelite - Page 43

44 4. Get answers to these questions about choosing an LED luminaire 1. Can I rely on the manufacturer s quality? 2. Is there IES LM testing for verification of electrical and photometric performance? Are.ies data files available? 3. What are the delivered lumens and LPW of the luminaire? 4. Is there an IES LM test report for verification of LED testing for at least 6,000 hours? 5. What is the operating temperature range specification and what is the maximum junction temperature (Tj) of the LED lamps over that operating range? 6. What is the expected L70 lifetime for the luminaire and how was it calculated? 7. Is the chromaticity of the luminaire in the ANSI C78.377A color space and is it stable over time? How is this verified? 8. Does the color of the light output vary from fixture to fixture or in different spatial locations for a single fixture? 9. What is the power factor of the power supply? How much power does it consume in the off state? 10. Is the luminaire lead-free and mercury-free? 11. What is the warranty and does the manufacturer have the resources to stand behind the product? 12. Has the manufacturer applied for the DOE Energy Star Page 44 Download Choosing an LED Luminaire

45 5. Select your supply chain carefully Know your local agent Know the luminaire manufacturer Know the LED device manufacturer Know the specifier Know the installing contractor Page 45

46 Thank you for your attention Thank you for your attention I am happy to take questions or send them to me at tclark@finelite.com I am happy to take questions or send them to me at tclark@finelite.com Page 46