Lightscene 2017: Specifying LED luminaires: Things We All Know, Don't We?

ASD LIGHTING: DESIGNED, DEVELOPED & MANUFACTURED IN THE UK

Designed, Developed & Manufactured in the UK

Specifying LED LuminairesThings We All Know

Don’t We?Nathan FrenchStreet Lighting Sales ManagerOctober 5th, 2017



TOPICS OF DISCUSSION

Capital Replacement Programs - What Are

They About?

Its Just An LED - & They Are All The Same?

Absolute Photometry - What & Why?

Luminaire Specification Features - The Role

They Play?

Correlated Colour Temperature - A Personal

Take?

2



CAPITAL REPLACEMENT PROGRAMS

What Are They About - Any Suggestions?

REDUCING CARBON EMISSIONS

3




What Is Set Out In Law

• The Climate Change Act 2008

• Delivering Our Low Carbon Future 2011

4




What Are They All About - Any Suggestions?

Really

5



THE GOOD NEWS

• We Have Lighting Standards To Support Us

In Law

• Authorities Have A Legal Requirement To

Provide Street Lighting

• They Do Have A General Duty Of Care To

Road Users & The General Public To Ensure

Their Safety6

Family Fortunes X Wrong Answer Uh - Uh Buzzer_Sound Effect.mp3






LETS DO A BASIC SCHEME

A Typical Highways / Street Scheme Criteria

Hours Per Annum

Year Costing Period

Total Scheme Hours

Total Circuit Watts

Price Per kWh

4000

25

100,000

1

£0.10

7




1st Year

kWh

Energy Cost

4

£0.40

8




25 Years

kWh (4 p-a)

Energy Cost (£0.40 p-a)

100

£10.00

9




What About Inflation Over 25 Years

0% Inflation (On £10.00 base level)

3% Inflation Per Annum

10

£10.00

£20.00



IF ONLY LIFE WAS SO SIMPLE

But… Its Not Just 1 Luminaire

Approx. 8,000,000 Of Street Lights In The

UK

11



IF ONLY LIFE WAS SO SIMPLE

8,000,000 Luminaires Saving 1watt

0% Inflation (On £10.00 base level)


£80,000,000

£160,000,000

12



THAT’S STILL NOT THE WHOLE STORY

What Is An Average UK Installation

70w Son-T (*Estimated)

LED Saving On HID

Actual Saved Watts

50%

45

13

* Estimated Refers to Nathan French Completely Making Up The Data



OH WHERE IS MY CALCULATOR

8,000,000 Luminaires, Giving A 45w Saving

0% Inflation (1w = £80,000,000)


£3,600,000,000

£7,200,000,000

14



ITS JUST AN LED

Are They All The Same?

Simple Answer Is No

Do Manufacturers Treat Them The Same?

Simple Answer Is No

15



ITS JUST AN LED

Factors Than Have A Detrimental Effect On

Their Life

Ambient Temperatures

Thermal Temperatures

Environmental Conditions

Electrostatic Discharge

16



ITS JUST AN LED

Thermal Management

Fins

Ribs

Air Gaps

Heat Sink

PCB Material

Thermal Pads / Paste

17



ABSOLUTE PHOTOMETRY

What Is It?

Measures Precisely The Lumens Emitted By

A Specific Luminaire.

Every Combination Of:

LED Quantity

Optical Lens

Drive Current

18



ABSOLUTE PHOTOMETRY

Highway Diamond

HWD-#4LED4435-S0 5.49

HWD-#4LED4435-S1 5.55

HWD-#4LED4435-S2 5.74 >130 Lumens

Per LED

HWD-#4LED4435-S3 5.36 <122 Lumens

Per LED

HWD-#4LED4435-S4 5.54

HWD-#4LED4435-S5 5.62

HWD-#4LED4435-S6 5.46

HWD-#4LED4435-S7 5.4719


Designed, Developed & Manufactured in the UK20

ABSOLUTE PHOTOMETRY?

A N Other Manufacturer

Lens 1, @ 531 5.00

Lens 2, @ 531 5.00

Lens 3, @ 531 5.00

Lens 4, @ 531 5.00

Lens 5, @ 531 5.00

Lens 6, @ 531 5.00

Lens 7, @ 531 5.00




A N Other Manufacturer




A N Other Different Manufacturer



SYSTEM LUMENS PER WATT?

Which Product Would You Choose?

> 130 Lumens Per Watt

< 95 Lumens Per Watt

21



WARRANTIES

Do You Read Them?

21



LUMINAIRE SPECIFICATION

System Optical Losses – HID Versus LED

Over 20% Lamp Lumens Lost

Lamp Lumen Depreciation

Optical Reflector Losses

Diffuser Losses

22




System Optical Losses

Direct Source

LED Lumen Depreciation

Optical Lens Losses

Diffuser Losses (Glass / Polycarbonate)

23




LED – Life (Moisture, Heat, ESD)

Driver Enclosure / LED Compartment

Maintenance Procedures

Access To Compartments

24




What Should Be Considered & Does It Matter

Aesthetics

High / Low Specification

24




What Should Be Considered & Does It Matter

Who Makes It & Where

Company Net Worth

Continuity Of Supply

After Brexit

24



CORRELATED COLOUR TEMPERATURE

CCT– A Personal Take

Perception

What Do You Specify?

How Do You Know?

What Could You Ask For?

24

CCT Test.MOV

CCT Test.MOV



Thank You

Lightscene 2017: Specifying LED luminaires: Things We All Know, Don't We?

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Transcript of Lightscene 2017: Specifying LED luminaires: Things We All Know, Don't We?