Technologies of lighting design to achieve low carbon living v1 0 (18 10 2012)

"Latest Technologies of Lighting Design to Achieve Low Carbon Living"

By: Megaman (HK) Electrical & Lighting Ltd Kelon, Kam Kong YAN Manager, Lighting Engineer Lighting Division

Introduction

From: EPD, Website

Global GHG Emission 2008

GHG Emission in Hong Kong

by Sector in 2008

From: EMSD, Energy Land

All Energy End-uses

From: Hong Kong Energy End-use Data 2012, EMSD

Electricity End-uses

From: Hong Kong Energy End-use Data 2012, EMSD

Therefore, I think “A good lighting design and installation can greatly improve energy efficiency and can lead to a lower carbon lifestyle for our community.�

Interactive Daylighting System

Daylighting Examples in Hong Kong

New Town Plaza @ Sha Tin

Citywalk @ Tsuen Wan

Daylighting Examples in Hong Kong

Elements @ West Kowloon Pacific Place I @ Admiralty

Daylighting Examples in Hong Kong

Festival Walk@ Kowloon Tong

Daylighting System - Naturally • Daylight is dynamic. • Quantity of daylight is defined by the Daylight Factor (D-Factor).

D = illuminance outside illuminance inside

Daylighting Importance • Only daylight shows the natural colour spectrum, • Daylight provides information about: - time of the day, - season, - wheather & climate, • Daylight relieves Seasonal Affected Disorder (SAD), regulation of circadian rhythms and psychological mood.

Is there any interactive daylighting system to improve the daylight efficiency?

Interactive Daylighting System This interactive daylight systems use the advantages of daylight and compensate for the disadvantages: A) They create a comfortable interior climate: By limiting heat increase in summer By limiting glare without darkening the interior By improving the light distribution

B) Energy can be saved: By reducing the switch on time for artificial light By reducing the need for ventilation and air conditioning

1. Static prism system

University library, Magdeburg, Germany

2. Moveable prism system – Glazed Roof

2. Moveable prism system – Glazed Roof

Plenary Building, Bonn, Germany

3. CombiSol sun & glare protection louvre Glazed roofs

Inclined glazing

4. Micro sun shielding louvre Transmission Range Cut off Range

North

4. Micro sun shielding louvre Fully tempered glass Plastic frame Molecular sieve Aluminium spacer Perimeter sealant Laminated glass

4. Micro sun shielding louvre g = total energy transmission value

ϕe = incoming radiation τe = transmitted radiation ρe = reflected radiation qi = secondary radiation to the inside qa = secondary radiation to the outside

g-value of different glass products: micro sunshielding louvre double glazing solar glass

14% 60 – 75 % 9 – 41 %

Zhaga Utilize the members of LED’s modules

Development of LEDs

Current Market High Power LEDs Downlighters

Current Market Common High Power LEDs Luminaires

Zhaga – Possible Reconizable Standard to LED Modules

Example of Zhaga Modules

Light Emitting Plasma (LEP) Electroless Compact Metal Halide

What is LEP? • Species of Solid State Lighting (SSL) belonging to the same category of products of “LED”.

• Electrodeless lamp bulb and is filled with metal halide gas in extremely compact size.

LEP Operating Principle

LEP is better than that of LED because‌ 1. High Intensity Package - How can you double the lumen intensity of a LED luminaire?

2. Full Spectrum of Light - ionization gives a full-spectrum of white light 3. Better Efficiency - LEP point source mapped effectively with optics

LEP’s Conclusion‌ 1. Better efficiency and better lighting quality solution for high level illumination, 2. Higher intensity spotting and larger area flooding applications which LEDs cannot match with.

Diffusing materials Luminaire’s efficiency dominator

Light Output Ratio • Efficiency of a luminaire is quantified by its light output ratio, • Ratio of the total light output of a luminaire to the total light output of light sources used in the luminaire when operating outside the luminaire.

According to: The SLL Lighting Handbook

LOR Of Luminaire’s Optics

High Grade Reflector

PMMA Opal Diffuser

LOR Of Luminaire’s Optics

T5 Modular w/Eldacon

LED Modular w/Eldacon

PMMA vs ELDACON速 Luminance Performance

Sandblasted PMMA plate

ELDACON速

LEDs Intensity Redistributed by Makrolon Lumen XT

Diffuse Light Made by Barrisol

Lighting simulation software Realization of lighting design

Lighting Simulation Software

http://www.dial.de/

http://www.relux.biz/

http://www.agi32.com/

http://www.oxytech.it/

Lighting Simulation Software Functions • Create a 3D virtual spaces with all necessary design materials and parameters, • Rendering of lighting effect with all special design requirements through scientific calculation, • Realistic the designs by providing numerical and scientific reports essentially daylighiting.

Demonstration Pro

Net

ReluxCAD

EnergyCH

CAD

ReluxSensor

ReluxPro

ReluxVivaldi

ReluxTunnel ReluxEnergy ReluxOffer

Tunnel

ReluxVivaldi

ReluxVivaldi

ReluxVivaldi

ReluxVivaldi

ReluxVivaldi

ReluxVivaldi

ReluxVivaldi

ReluxVivaldi

ReluxVivaldi

ReluxVivaldi

Conclusion

1. Improvement of the reliability and efficiency of daylighting by introducing reflective system and tracking control system, 2. Emergence of high power solid state modules with "Zhaga" consortium; as a result, SSL luminaires can have more extensive applications, 3. Life time and efficiency of the traditional discharge lamp can be enhanced by making use of electromagnetic induction with frequency amplifier, 4. Introduction of higher transmission ratio diffusing materials to increase light output ratio of luminaire with less energy loss,

5. Design of lighting is facilitated by sophisticated lighting simulation software to be more accurate and realistic; daylighting and dimming can be easily integrated in the design stage.

All of the above can work independently on specific lighting application to improve the operation efficiency.

Or they can “Cross-Over� to maximize energy efficiency!

Continual development of lighting industry provides one of the effective ways to achieve low carbon sustainable living for our community.

Thank you!