manage daylight

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manage daylight with window systems


AIA Program Number DLTSHD 1.0 Learning Unit
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manage daylight with window systems
This program is registered with the 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 may be addressed at the conclusion of
this presentation.
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manage daylight with window systems

• Program Summary

Daylight is not a uniform or consistent light
source however, this natural light is good for
people and free to use. Incorporating daylight
into a commercial space can be beneficial or
disruptive. Explore the unique characteristics of
the natural light available on your project and
the impact of that daylight on a commercial
space. Learn how to transform the type of natural
light available into the type of natural light
that will meet your design goals, and address the
differences in available window systems to ensure
that you are specifying a system that can meet
the requirements of the space.
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manage daylight with window systems

• Learning Objectives

• Identify the type of daylight available on your
  project site and the potential positive/negative
  impact that daylight can have in a commercial
  space.
• Transform the type of daylight available into the
  type of daylight that will meet your design
  goals.
• Address the differences in available window
  systems and learn to specify roller shade fabric
  that will meet your design goals.

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manage daylight with window systems

• Agenda

• What are the different types of daylight?
• Which factors determine the type of daylight
  available at a project site?
• What are the different roles that daylight can
  play in an office space?
• What is Daylight Management?
• What are the differences between mini-blind and
  roller shade window systems?
• How do solar performance metrics describe the way
  a shade fabric manages daylight?

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manage daylight with window systems

• The Office Space

• 60 of the commercial floor space in the U.S. is
  within 25 feet of an exterior wall or window.

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manage daylight with window systems

• Light Environment in the Office Space

• The light environment is a combination of
  daylight and electric light.

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manage daylight with window systems

• Available Electric Light

• Electric light levels are controllable through
  dimming and switching.
• Electric light types are determined by fixture
  types.
• In office spaces fluorescent lighting is typical.

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manage daylight with window systems

• Available Daylight Factors season and weather
  conditions

• The type and availability of sunlight changes
  every day with season and weather conditions.

• Seasonal Sunshine(sunrise to sunset) New York
  CityJanuary - 9 hoursAugust - 14 hours

• Weather ConditionsFull daylight, clear
  skiesdirect sunlight, 1,000 fcOvercastdiffuse
  d sunlight, 100 fc

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manage daylight with window systems

• Types of Daylight

• The word daylight can refer to direct sunlight,
  reflected sunlight, and/or diffused sunlight.

diffused sunlight
direct sunlight
reflected sunlight
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manage daylight with window systems

• Available Daylight Factors

• Beyond the seasonal and weather considerations,
  there are building characteristics that impact
  the type and intensity of the daylight available.
• building latitude and orientation
• siting
• window size and composition

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manage daylight with window systems

• Available Daylight Factors building
  latitude and orientation

• In the Northern Hemisphere, north-facing facades
  are good sources of diffused daylight.
  South-facing facades can experience exposure to
  intense direct sunlight that causes glare.

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manage daylight with window systems

• Available Daylight Factors siting

• Neighboring structures can provide shade or
  create glare, depending upon whether they block
  or reflect direct sunlight onto a buildings
  façade.

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manage daylight with window systems

• Available Daylight Factors window size and
  composition

• Daylight will typically penetrate a space up to
  1.5 times the height of the window.

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manage daylight with window systems

• Daylight in the Office Space

• Direct and intense reflected sunlight can create
  strong contrast ratios and glare, disrupting
  productivity and causing discomfort.

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manage daylight with window systems

• Design Daylight in the Office Space

• What is the daylight design goal for the project?
• Should daylight be present in a space and, if so,
  in what capacity?
• Is it purely to provide ambience?
• Should daylight provide a portion of the
  functional task light?
• Is daylight desired deeper in the building?

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manage daylight with window systems

• Daylight Design Goal remove all daylight

• In some applications, the daylight design goal is
  to remove all daylight from the space--especially
  for developing photography or AV presentations.

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manage daylight with window systems

• Daylight Design Goal incorporate daylight

• Daylight exposure has been linked to many
  positive effects on employee mood, motivation,
  satisfaction, productivity, health and retention.

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manage daylight with window systems

• Daylight Design Goal use daylight for ambience

• Daylight and outdoor views can be included for
  aesthetic impact and to soothe building occupants.

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manage daylight with window systems

• Daylight Design Goal use daylight
  for task lighting

• Daylight can be included to provide task lighting
  in an office space. This strategy reduces the
  amount of electric light needed by employees
  between sunrise and sunset.

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manage daylight with window systems

• Daylight Design Goal meet LEED Daylight and
  Views credit

• EQ Credit 8.1In all cases, provide daylight
  redirection and/or glare control devices to avoid
  high-contrast situations that could impede
  visual tasks. --LEED for NC Version 2.2
  October 2005

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manage daylight with window systems

• Daylight Management

• Turn the daylight available into daylight that
  meets design goals through daylight management

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manage daylight with window systems

• Daylight Management

• Daylight management can be accomplished by
  specifying window systemslike roller shades or
  mini-blindsinto a project.

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manage daylight with window systems

• Benefits of Daylight Management

• Eliminate glare
• Reduce solar heat gain
• Reduce UV exposure
• Preserve outdoor views
• Create consistent façade appearance

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manage daylight with window systems

• Mini-Blinds

• When tilted or closed, mini-blinds deflect glare-
  causing light and provide privacy, but almost
  completely compromise the connection with the
  outdoors.

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manage daylight with window systems

• Roller Shades

• Roller shades diffuse glare-causing light,
  eliminating glare, without obstructing the views
  to the outdoors.

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manage daylight with window systems

• Manual Control

• Manual control allows each shade or blind to be
  positioned to match personal preference. Devices
  can be ineffective if positioned incorrectly and
  manual control can create an inconsistent feeling
  from the outside looking in.

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manage daylight with window systems

• Electronic Control

• Three popular technologies to motorize a roller
  shade
• AC-powered tubular motor
• Battery-powered motor
• Low-voltage electronic drive(shown at right)

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manage daylight with window systems

• Electronic Control

• If a technology is obtrusive, difficult to reach,
  or hard to understand, it will not be used.

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manage daylight with window systems

• Fabric Performance

• Fabric performance determines the amount and type
  of solar energy that is transmitted into the
  interior building, absorbed by the shade, or
  reflected back outside.
• Fabric performance is defined by solar
  performance metrics.

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manage daylight with window systems

• Solar Performance Metrics

• Solar Transmittance (Ts) percentage of solar
  radiation that passes through the fabric.
• Solar Absorptance (As) percentage of solar
  radiation absorbed by the fabric.
• Solar Reflectance (Rs)percentage of solar
  radiation reflected outside by the fabric

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manage daylight with window systems

• Openness Factors

• The openness factor of a fabric describes the
  ratio of open space to fabric material.
• Popular openness factors10, 5, 1, blackout
• Openness factors impact
• Visibility through shade
• Amount of light filtered before entering the space

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manage daylight with window systems

• Openness Factors

• Different facades of the same building receive
  different amounts and types of daylight exposure.
• Specify different openness factors on the same
  building to meet the unique requirements of each
  space.

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manage daylight with window systems

• Color

• Whether a fabric is light or dark
  impacts
• Visibility through the shade
• Ability to combat solar heat gain

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manage daylight with window systems

• Dual-Sided Fabrics

• Provide a clear view outdoors, while reflecting
  more solar heat than it absorbs.
• Dual-sided fabrics are designed with a dark color
  to face the interior of the building and a light
  color to face the exterior.

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manage daylight with window systems

• Fabric Composition

• Popular options include
• fiberglass
• polyester
• fiberglass/polyester blend
• acrylic
• natural fibers

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manage daylight with window systems

• PVC-Coated Fabrics

• Many fabrics are coated with poly-vinyl chloride
  (PVC) to improve durability and protect the
  fabric from UV damage.
• PVC also enhances the fabrics flexibility,
  helping the material move smoothly as it opens
  and closes.

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manage daylight with window systems

• PVC-Free Halogen-Free Fabrics

• PVC-free and halogen-free fabrics support
  sustainable design guidelines promoting healthy
  indoor environments by reducing potential
  off-gassing toxins.

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manage daylight with window systems

• How are you designing office spaces to manage
  daylight?

• Specify a window system to include daylight in
  the office space and
• Provide an unobstructed outdoor view.
• Eliminate glare.
• Protect furnishings against harsh UV radiation.
• Minimize solar heat gain and thermal losses.
• Position the device for effective daylight
  management.
• Provide clean and consistent look for curb appeal.

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manage daylight with window systems

• Further Reading

• Daylighting by the U.S. Department of Energy
• excerpt from the Building Technologies Program
  October 4, 2005
• The Deliberation On Daylighting by Leah Garris
• published in Buildings April 2004

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manage daylight with window systems
AIA Program Number DLTSHD 1.0 Learning Unit
42
Lutron Light Control Solutions for Managing
Daylight with Window Systems
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the daylight management environment

• Importance of effective daylight management
  Proper daylight management improves

• Glare reduction
• Energy efficiency
• UV protection of furnishings and finishes
• Aesthetics of design by maximizing presence of
  useful comforting daylight
• Privacy when desired
• Consistent façade appearance

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the daylight management environment

• Lutron solutions

• Manual shades
• AC motorized shades
• Sivoia QED shades

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the daylight management environment

• Sivoia QED Shades

• Convenient and precise control of one or multiple
  shades
• Quiet, smooth movement provides elegant
  transitions
• Balanced light control adaptable to dynamic
  lighting conditions and needs
• Simple technology that is easily installed and
  reconfigured to changing space layout
• Control options that optimize the usefulness and
  enjoyment of the space

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the daylight management environment

• Sivoia QED quiet electronic drive roller shade
  systems

• Multiple shades stay in alignment within 1/8
  while moving or stopped at preset positions
• Roller shades from 18.5 wide to more than 15
  wide
• Symmetrical light gaps (3/4 typical)
• Regular or reverse rolls

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the daylight management environment

• Intelligent Hembar Alignment (IHA)

• Roller shades of different tube diameters stay
  aligned as they move
• Rotation speed is regulated to keep shades aligned

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the daylight management environment

• Sivoia QED roller 64

• Installs inside jambs, outside jambs, or in 3.5
  x 3.5 pocket
• As narrow as 18.5
• Up to 64 square feet of fabric

• Roller 64

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the daylight management environment

• Sivoia QED roller 100

• Installs inside jambs, outside jambs, or in 4.75
  x 5 pocket
• As narrow as 24
• Up to 100 square feet of fabric

• Roller 100

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the daylight management environment

• Sivoia QED roller 225

• Installs in 7 x 7 pocket for jamb mounted
  applications only
• Up to 225 square feet of fabric

• Roller 225

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the daylight management environment

• Sivoia QED roller shades

• Side channel used with fascia or pocket
  eliminates light leakage for blackout
  installations
• Dual-mount systems available for sheer and
  blackout fabrics on the same window

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the daylight management environment

• Sivoia QEDTM roman shades

• Soft fabrics or natural woven wood
  materials
• Inside or outside mount from 24 wide to 11.5
  wide with no light gaps
• Identical wiring and quiet, precise performance
  as roller shades
• Options include edge binding, valances and
  privacy linings

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the daylight management environment

• Sivoia QEDTM drapery track

• Customer-supplied drapery material typical
• Draperies up to 18 long (straight and curved)
  mount to wall or ceiling
• Left-draw, right-draw and split-draw systems
• Identical wiring and quiet, precise performance
  as roller and roman shades

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the daylight management environment

• Control Options

• Manual controls in a wide variety of colors and
  finishes
• Infrared remotes (receiver capability built into
  shade)
• Integration for control by other systems
• Balanced light control with Lutron lighting
  control systems

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the daylight management environment

• Fabric and materials

SheerShade

• Lutron provides a wide variety of SheerShade,
  Privacy and Blackout shade materials
• Available dual-sided fabrics are lighter on the
  outside and darker on the inside
• light outside surface reflects heat and provides
  uniform façade appearance
• dark inside surface allows for better view
• Other materials such as woven woods and PVC-free
  and/or halogen-free materials are also available

Privacy
Blackout
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the daylight management environment

• Specification overview Lutrons Sivoia
  QED technology offers

• Convenient, precise management of daylight to
  reduce glare and maintain balanced lighting
  levels and consistent façade appearance
• Quiet, smooth movement for elegant transitions
  with minimal disturbance and distraction
• Seamless integration with lighting control
  systems, audio/visual control systems or building
  management systems for complete light control
• Wide range of manual, automatic or integrated
  control options

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Lutron solutions for schools

• Inventor of Lighting Control

• Lutron invented the rotary dimmer in 1961
• Since then we have invented more firsts in
  lighting control than all other lighting control
  providers combined
• Rotary dimmer
• 1 dimming fluorescent lights
• Preset dimming systems
• Whole building lighting control systems
• Million-cycles switching systems
• Quiet electronic drive shading

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Lutron solutions for schools

• Focus on the Customer

• Lutron cornerstone principals have fostered our
  growth into the leading lighting control provider
  in the world
• We focus on listening to the customer and
  delivering value at every step of a project, from
  design to installation to long-term use
• Our continued investment into research and
  development keep our position as a global leader
  in innovation and quality
• We want to be first and best in everything we do

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Lutron solutions for schools

• Corporate Headquarters in Coopersburg, PA

London
Chicago
Beijing
Paris

• New York

Berlin
Madrid
Shanghai
Los Angeles
Barcelona
Tokyo
Ft. Lauderdale
Hong Kong
Dubai
Singapore
Sao Paolo
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Lutron solutions for schools

• Total Light Control - Dimming, Switching,
  Shading

• Light Control Strategies
• Manual control
• Daylight control
• Vacancy control
• Time Control
• Floor plan control
• High-end tuning
• Peak kW demand and load shed management
• System integration

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Lutron solutions for schools

• Total Light Control - Dimming, Switching,
  Shading

• Lutron Control Solutions
• Wall dimmers and switches
• Table lamp dimmers
• Preset room light controls
• Whole building light controls
• Million cycle switching systems
• Shading systems
• Automatic controls and sensors

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Lutron solutions for schools

• Lutron Benefits

• Performance
• Flicker-free lighting control
• Million-cycle switching
• Ultra-quiet shading solutions
• Safety
• Air gap off
• Emergency lighting
• Multiple failsafe modes

• Flexibility
• Field customizable controls
• Seamless integration
• Reliability
• 100 factory testing
• Power failure memory
• Surge protection
• 24/7 global support

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Lutron solutions for schools

• Prestigious Projects

• Statue of Liberty
• The White House
• Guggenheim Museum
• Bellagio Casino
• Bank of China
• Legoland
• Canary Wharf
• New York Times Headquarters

• Millennium Bridge
• Lincoln Financial Field
• Soldier Field
• Orange County Convention Center
• DC Convention Center
• Boston Convention Center
• Bill Gates Homes

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Lutron solutions for schools

• Strategic Client Relationships

• Marriott
• Hyatt
• Four Seasons
• Hilton
• Starwood
• AMC Theaters
• Cinemark

• Louis Vuitton
• Gap/Banana Republic
• Tiffany Co.
• Hard Rock
• Darden Restaurants
• Uno

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Lutron solutions for schools

• We want to help you delight your clients

• Make the light perfect
• Provide flexibility, value and reliability your
  clients expect
• Use one source for complete light control
  solutions
• Make the design and construction process faster
  and smoother with Lutron design tools and project
  support

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Lutron solutions for schools

• Other CEU Presentations

• Lighting Control for Sustainable Design and LEED
  Certification
• Manage Daylight with Window Systems
• Ambiance and Energy Savings
  Design the Hotel Experience
  with Lighting Control
• K-12
• Lighting in the Office

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Lutron Light Control Solutions for Managing
Daylight with Window Systems