Residential Application for LED Lighting

Residential Applications
for LED Lighting:
How LED lighting is creating
opportunities for creating dynamic
lighting layering in residential
spaces
Joseph A. Rey-Barreau, AIA, IES
Architect/Lighting Designer
Associate Professor
College of Design/University of Kentucky
Co-Founder/Education Director
LED University
www.bdcuniversity.com/ledu
hedjrb@uky.edu

Credit(s) earned on completion of this course will be reported to AIA CES
for AIA members. Certificates of Completion for both AIA members and
non-AIA members are available upon request.
This course is registered with AIA CES for continuing professional
education. As such, it does not include content that may be deemed or
construed to be an approval or endorsement by the AIA of any material of
construction or any method or manner of
handling, using, distributing, or dealing in any material or product.
___________________________________________
Questions related to specific materials, methods, and services will be
addressed at the conclusion of this presentation.

Sponsors
It is predicted that by 2016 LED lighting will be approximately 50% of
the residential lighting marketplace. This rapid adoption means that
LEDs will soon become the primary lighting source in single-family
and multi-family construction. This course will focus on the LED and
Solid State Lighting technologies and design concepts that are
leading the way in the re-shaping of residential lighting design. The
efficiency, small scale and ubiquity of these new technologies are
providing designers with opportunities to integrate LED lighting into
innovative residential lighting design concepts using multiple LED
lighting layers. The course also will cover updates on the latest and
most innovative LED product introductions for residential
applications.

Sponsors
1. To better understand the key benefits of using LED lighting in
residential applications.
2. To better understand how LED technology is positively impacting
lighting design objectives when using lighting layers.
3. To better understand the specific benefits of LED lighting in
kitchen and baths.
4. To better understand the primary specification issues that
designers and architects must define when selecting and
applying LED decorative and architectural lighting in residential
applications.
5. To analyze specific case studies of successful LED lighting
applications.

The Incandescent Light Bulb
1879 Thomas Edison develops the
first incandescent light bulb
2016

Incandescent and halogen
market share
Source: McKinsey Global Lighting Market Model

CFL market share
Source: McKinsey Global Lighting Market Model

1910 Sears and Roebuck catalog

Legacy fixtures and
LED replacement lamps

Sorce: McKinsey and Company
“….focus will shift from light source replacement to new
fixture installation……..”

Fixtures with multiple light source options
Medium
Base
A19
GU24 GU24
GU24 Retrofit
GU24 Medium
Base
LED
Light
Engine

“LED fixture product generations will soon be measured in
months, rather than years or decades.”
LED
Technology
2016
Sorce: McKinsey and Company

Yet SSL technology is actually in its infancy.
Credit: Yukio Narukawa, et al.

“The Nobel Prize in Physics 2014 was awarded jointly
to Isamu Akasaki, Hiroshi Amano and Shuji
Nakamura "for the invention of efficient blue light-
emitting diodes which has enabled bright and energy-
saving white light sources".

Light Experiences and
Human-Centric Lighting

Lighting to fit your
mood
or your need
Tunable lighting

Lighting to fit your mood
or your need
Lighting to fit your
mood
or your need
Tunable lighting

Tunable lighting
Tunable lighting

Custom compositions
Tunable lighting
Tunable lighting

Custom compositions
Tunable lighting
Tunable lighting
Custom compositions

On the occasion of the 450th anniversary of the death of
Michelangelo LEDs are now used to illuminate the
Michelangelo frescoes in the Sistine Chapel.

“The new lighting is intended to
minimize ultraviolet and infrared
rays and to bring out what are
believed to be the original hues in
the painting that have faded over
time. “
LA Times

Lumen
The most common measure of light output (or luminous flux)
is the lumen.
Light Source Lumens
60 Watt Incandescent 820
15 Watt CFL 950
8 Watt LED 810

Incandescent and LED comparison

Efficacy
Light Source Lumens Lm/W
60 Watt
Incandescent 820 14
15 Watt CFL 950 63
8 Watt LED 810 101
The light output emitted by a light source divided by the nominal
light source wattage and expressed in lumens per watt (lm/W).

LED
200+ lpw
Est. 2020
Efficacy

Correlated Color Temperature
(CCT)
A measure of the color appearance
of a white light source.
CCT is measured on the Kelvin
absolute temperature scale.

2700K, 3000K, 3500K, 4000K
Color temperature tuning
Dimming (2700K to 1800K)
Correlated Color Temperature
(CCT)

The color rendering index (CRI) scale is used to compare the effect of
a light source on the color appearance of its surroundings.
A scale of 0 to 100 defines the CRI.
A higher CRI means better color rendering, or less color shift.
Color Rendering Index
(CRI)
· 97 Lumens per Watt
· CRI 90+
· 2700K, 3000K, 3500K, 4000K

LEDs fall within the category of
Solid State Lighting
Solid-state lighting (SSL) includes devices
that use diodes to create lighting, including:
Light Emitting Diodes (LED)
Organic Light Emitting Diodes (OLED)
The terms SSL and LED are often used
interchangeably.
LED Facts

LED ArraySingle LED
A group of LEDs
is called an
Array of LEDs
LED is an acronym for
Light Emitting Diode
LED Facts

Creating the substrate wafers
Substrate wafer
LED Facts

What is a diode?
• A diode is a very simple
type of semiconductor.
• A semiconductor is a
solid material with a
varying ability to
conduct electrical
current.
Source: Lighting Research Center/RPI
LED Facts

The semiconductor die consists of a chip of semiconducting
material treated to create a structure called a
p-n (positive-negative) junction.
Semiconductor die
Source: U.S. Dept. of Energy
LED Facts

When a voltage is applied across the electrodes the current flows
from the anode (P side) to the cathode (N side).
LED Facts

• When an electron meets a hole at the P-N junction it falls in to a
lower energy state.
• The excess energy of the electron is emitted as a Photon
(Photons)
(Photons)
LED Facts

• LEDs emit heat mostly in
the form of conduction.
• To dissipate this heat, LEDs
are mounted on heat-
conducting material called a
heat sink.
Emitted light
Heat
LED Facts

Heat loss (%)
LED Facts

LED lighting trends in residential applications

14’ x 18’
64 linear feet
18 linear
feet

T
14’
36’
36’
22’
v
1
144
1
18
Total: 72 linear feet
4752 lumens
720 total watts
5w xenon 33 lumens 2000 hrs.
1000w 24v.
transformer

14’
22’
Total: 72 linear feet
10944 lumens
187 total watts
High output LED tape

Lamping: 6 x 60W G9 Halogen
Lumens: 800 lumens
Total Lumens: 4800 lumens
CCT: 3000K
Life 2000 hrs.
Lamping: 6 x 4W G9 LED
Lumens: 280 lumens
Total Lumens: 1680 lumens
CCT: 3500K
Life 20000 hrs.
Legacy fixtures and
LED replacement lamps

• 3 watts
• 360 lumens
• 3000K
Integrated LED fixtures

• 10 watts
• 1265 lumens
• 3000K

• 3500K
• 80+ CRI
• 40000 hrs.

• 100 watt LED
• 7000 lumens
• 3000K
• 80+ CRI
• 40000 hrs.

Source: McKinsey and Company
“….focus will shift from light source replacement to new
fixture installation……..”

“LED fixture product generations will soon be measured in
months, rather than years or decades.”
LED
Technology
2015
Source: McKinsey and Company

Tunable lighting
Custom compositions

This concludes The American Institute of Architects
Continuing Education Systems Course

Residential Application for LED Lighting

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