Group 6j - Energy and the Architectural Fenestration Industry, PART ii: The Future of High-Performance Fenestration Flashcards
the major components of future high-performance
fenestration, include:
better design of the frame and thermal barriers
more layers of glass in each panel
better glass and spacers
improved glass coating
better understanding and implementation of daylighting
Integrating IOT technology into glass.
better design of the frame and thermal barriers
better glass and spacers
improved glass coating
better understanding and implementation of daylighting
Integrating IOT technology into glass- probably legit, but wasn’t listed by AAMA.
Recycled aluminum maintains ___ percent of the strength of virgin aluminum.
60
70
85
100
100
Due to it’s high strength-to-weight ratio Aluminum frames ______
are well suited for the type of applications that include heavy glass packages
can be designed for excellent energy efficiency.
have high embodied energy and don’t make sense to recycle
allow for the design flexibility of large skylights and sloped glazing systems to let in abundant natural light
are well suited for the type of applications that include heavy glass packages
allow for the design flexibility of large skylights and sloped glazing systems to let in abundant natural light
can be designed for excellent energy efficiency. - this is true but it has nothing to do with high-strength to weight ratio
Aluminum is highly thermally conductive. It is therefore important to utilize a _______to slow the flow of heat energy.
warm-edge panel design
sill weep system
continuous sill receiver
thermal barrier
thermal barrier
_______ is an element made of material
with relatively low thermal conductivity, which is
inserted between two aluminum extrusions having
high thermal conductivity, in order to reduce the
heat transfer.
Thermal barrier
Thermal break
Hybrid PVC fenestration systems ______
energy-efficient and cost-effective alternative to Aluminum for use in commercial fenestration
are not strong enough to serve as
are in all cases an
can be a very
require reinforcement to be
can be a very
PVC windows and doors are available on the market in ___ and ___ commercial grade.
Architectural and commercial
Commercial and light commercial
Light commercial and Residential
Residential and architectural.
Architectural and commercial
Commercial and Architectural Hybrid PVC fenestration products are significantly different from residential PVC products in several ways, including:
exterior walls are thinner and lighter than
residential window wall designs
multiple insulating air chambers in the frame and sash, providing greater insulating value.
Thicker profile walls provide a greater weld area at
corners.
Steel or aluminum reinforcement attached at specific intervals
multiple insulating air chambers in the frame and sash, providing greater insulating value.
Steel or aluminum reinforcement attached at specific intervals
________fiberglass framing offers high insulation
and low conductivity, as well as high condensation
resistance.
Extruded
pultruded
hand-formed
milled
pultruded
Which is not one of the cited benefits of daylighting:
Improved test score in schools
Improved patient comfort in healthcare
Fewer overtime and night time hours
Better retail sales
Fewer overtime and night time hours
Glass types are compared and measured by these four criteria:
- Visible Light Transmittance (VLT)
- Solar Heat Gain Coefficient (SHGC)
- Emissivity (E)
- U-factor
Options available for improving the thermal performance of the glass and insulating glass (or IG) unit, include: (8)
Think about
attributes and treatments of the glass (3)
IG assembly options, qty, components (4)
Alt. support method (tensile)
Glazing
• Laminates
• Dynamic glazing
• Diffused light panels
Assembly: • Triple and quadruple glazing • Inert gases • Spacers (including warm edge) • Select exterior and interior lites
Mounting
• Suspended files
Traditional IG spacers, with minimal thermal resistance are made from: (2)
Hybrid - metal and polymers Carbon fiber Stainless Steel Aluminum Steel
Aluminum, Steel
Lower thermal conductivity (vs. traditional spacers) is achieved with IG spacer made of: (2)
Hybrid - metal and polymers Carbon fiber Stainless Steel Aluminum Steel
Hybrid - metal and polymers
Stainless Steel
The currently available IG spacers with the lowest thermal conductivity are high-performance, warm edge spacers made from:
Hybrid - metal and polymers Carbon fiber Stainless Steel Aluminum Steel
Hybrid - metal and polymers
Which of the following is not among the cited advantages of warm-edge IG panel spacers?
Energy savings, due to lower U-factor of the overall assembly.
Reduced air-intrusion
Reduced condensation risk (improved CRF) due to higher sightline temperatures.
Improved sound control
Improved structural performance
Reduction of SHGC.
Reduced air-intrusion
Improved structural performance
Reduction of SHGC.
Possible improvements for fenestration framing contributing to achieving net-zero energy may include
frame systems with higher dimensional tolerances
new finishes
different thermal-barrier materials
external shading devices
high-strength composite materials with low conductivity
new finishes
different thermal-barrier materials
high-strength composite materials with low conductivity
Which of the following is not among the cited improvements to glazing that may help reach net-zero energy buildings?
Advanced low-E coatings Enhanced films to lower u-factors Energy producing glazing Annealed glass Dynamic glazing Increased impact resistance
Annealed glass
Increased impact resistance
Dynamic Glazing refers to
Moving glass
Glass that can vary from clear to tinted state
Glass tested under dynamic pressure
IG panels that produce energy
Glass that can vary from clear to tinted state
Which of the following is not one of the types of dynamic glazing:
Thermochromic
Photocrhromic
Piezocrhromic
Electrochromic
Piezocrhromic
The most efficient gas fill for IG panels is:
Single panel glazing (no cavity to fill)
Xenon
Argon
No gas fill (Vacuum)
No gas fill (Vacuum)
Successful daylighting strategies integrate all but which one of the following: Climate Site Orientation Insulation
Insulation
Which of the following is not among the recommended strategies for realizing the full benefits of daylight? North or south-facing windows Avoid east- and west-facing windows Avoid north windows Light / reflective interior surfaces Include east facing windows
Avoid north windows
Include east facing windows
Physical attributes of a window assembly and surroundings that improve efficacy of daylighting from windows include all of the following, except:
Size and shape of window frame components
close proximity to interior walls and ceilings
high, open ceilings
frames canted to the interior
high, open ceilings
Which of the following is not a cited component of a daylight optimized window system:
Light shelf and External shade projection Lighting management system Mixture of VT and moderate VT glass Sloped openings Low SHGC glazing with warm edge spacers interior operable shades
Lighting management system
Low SHGC glazing with warm edge spacers
A daylight optimized system should be used with an interior lighting management controls, but the controls are not part of the optimized window system itself.
Which of the following is not a cited component of a daylight optimized window system:
Light shelf and External shade projection Automatic lighting controls Mixture of VT and moderate VT glass Sloped openings Low SHGC glazing with warm edge spacers interior operable shades
Lighting management system
Low SHGC glazing with warm edge spacers
A daylight optimized system should be used with an interior lighting management controls, but the controls are not part of the optimized window system itself.
Which of the following is not true?
Sun shades:
Should not be used with light shelves
Control how light enters the building
Reduce solar heat and glare
Harvest and direct natural light further into the building
Make automatic electric lighting controls unnecessary
Should not be used with light shelves
Make automatic electric lighting controls unnecessary
It is expected that, to save energy future windows and facade systems will ….
be replaced by more opaque, insulated wall surfaces
include photovoltaic glazing that may be opaque or transparent
be highly insulating and dynamic
include integral electric illumination
integrate with other facade systems in unified assemblies
include photovoltaic glazing that may be opaque or transparent
be highly insulating and dynamic
integrate with other facade systems in unified assemblies
Among growing trends in facade performance assemblies including _____ will produce the lowest thermal transmittance possible.
photovoltaic and photochromic solar facades
triple glazing with advanced thermal barrier designs
light redirecting films
Eliminating costly insulated glazing panels
triple glazing with advanced thermal barrier designs
This has all been about energy efficiency focused on wall mounted fenestration products. For more information from AAMA/FGIA on skylight and sloped glazing applications, one should:
give up and go home
go eat a sammich
go to aamanet.org/skylight
probably get a new job
aamanet.org/skylight
Quiz Q1:
Glass types are compared and selected for thermal performance based on center of glass U-factor along with all but which one of the following critera?
emissivity
SHGC
thickness
VT
thickness
Quiz Q2:
High performance ____ are made from metal and polymers, raise sightline temperatures, significantly improve both thermal efficiency and condensation resistance, and may even improve control of sound from outdoors.
glazings
sealants
warm-edge spacers
coatings
warm-edge spacers
Quiz Q3:
Further improvements in lowering U-factors are likely to center on all of the following except:
multiple coatings and IG air/gas spaces
sealants
warm-edge spacer designs and materials
new composite framing materials
sealants
Quiz Q4:
Which of the following new glass technologies produces energy in a window?
electrochromic
photochromic
thermochromic
photovoltaic
photovoltaic
Quiz Q5:
Which ONE of the following provides the most thermally efficient fill in an air space?
vacuum
argon
krypton
xenon
vacuum
