PREL-SHADE
Thermochromic Glass
PREL-SHADE – INSULATING GLASS
DESCRIPTION
Prel-Shade is a thermochromic glass that changes color when it is warmed by the sun. During
a period of strong sunshine, the glass will heat
up and become darker and will, as a result,
reduce the solar gain inside the building. As
the strength of the sun diminishes at the end
of the day or on cloudy overcast days, the glass
remains clear, permitting a greater amount of
natural light to enter.
Insulating glass : 5 mm clear, Prel-Shade interlayer, 5 mm clear / 11,5 mm Argon / 6 mm Low-e on clear
prelco.ca
PREL-SHADE
Thermochromic Glass
ADVANTAGES
LIMITS SOLAR HEAT
Because of its thermochromic properties, PrelShade mitigates heat gain when exposed to the
sun and allows natural light to enter once the
strong period of sunshine has passed. Air conditioning costs are thus reduced while maximizing
the effects of natural light. In winter, Prel-Shade
is equally advantageous because it remains
completely clear during cold sunny days thus
allowing a better heat gain.
REDUCES GLARE WHILE
PRESERVING THE APPEARANCE
OF THE BUILDING
Prel-Shade counters the glare and the visual
fatigue of occupants when the sun is strong. The
glazing eliminates the need for blinds, curtains
and other window treatments thus maintaining a
uniform appearance of the facade of the building
while increasing the comfort of the occupants.
INSTALLS LIKE REGULAR GLASS
AND ADAPTS TO THE EXISTING
WINDOWS
Prel-shade does not require electrical wiring or
any control system. The glazing is installed as
easily as regular glazing. Furthermore, with an
overall thickness of as little as 31 mm, the glazing
can be used in most curtain walls and window
frames.
AVAILABLE IN SEVERAL TINTS
The thermochromic interlayer can be used with
clear or tinted glass. When it is put together with
clear glass, the interlayer appears to be green.
This base color can be modified by using tinted
glass. In reacting to heat, Prel-Shade offers the
best performance when utilizing this last combination.
HAS THE SAME ADVANTAGES AS
TRADITIONAL LAMINATED GLASS
Just like regular laminated glass, Prel-Shade is
assembled using interlayers of PVB and has
all the same advantages. It offers increased
resistance to impact and meets the CPSC 16
CFR1201- Safety Standards for Architectural
Glazing Materials. It filters more than 99 %
of the UV rays, the primary cause of discoloration of interior surfaces and provides
sound-proofing that is superior to traditional
monolithic glass.
PREL-SHADE – CONTINUOUS CONTROL OF DAYLIGHT
APPLICATIONS
· Office buildings
· Schools and libraries
· Restaurants
· Canopies and skylights
· Heavily glazed residences
prelco.ca
PREL-SHADE
Thermochromic Glass
PREL-SHADE – CONTINUOUS CONTROL OF SOLAR HEAT GAIN
PERFORMANCE VALUES LOE3 366
PERFORMANCE VALUES GREEN TINTED
AND LOE2 272
Clear State
Tinted State
Clear State
Tinted State
(Laminate Temp 10°C)
(Laminate Temp 65°C)
(Laminate Temp 10°C)
(Laminate Temp 65°C)
SHGC
0.31
Continuously Variable
0.15
SHGC
0.24
Continuously Variable
0.11
Shading Cœfficient
0.35
Continuously Variable
0.17
Shading Cœfficient
0.28
Continuously Variable
0.13
Relative Heat Gain (BTU/HR*FT2)
74.0
Continuously Variable
37.0
Relative Heat Gain (BTU/HR*FT2)
59.0
Continuously Variable
29.0
Visible Light Transmission
52 %
Continuously Variable
11 %
Visible Light Transmission
53 %
Continuously Variable
11 %
Solar Transmission
20 %
Continuously Variable
6 %
Solar Transmission
19 %
Continuously Variable
4 %
TDW-ISO
0.32
Continuously Variable
0.06
TDW-ISO
0.31
Continuously Variable
0.06
U Value (BTU/HR*FT2*F)
U Value (BTU/HR*FT2*F)
0.24
0.23
* Performance values calculated by LBNL OPTICS 5.1 and WINDOW 6.3.9.0 programs, environmental conditions were NFRC 100-2010 with tilt of 90°.
**HS : Heat-Strengthened
PRODUCTION CAPABILITIES
mm
in
150 X 300
6 X 12
1650 x 3660
65 x 144
Double Insulating Glass Unit 31
1 7/32
Triple Insulating Glass Unit 47
1 7/8
Minimum Dimensions
Maximum Dimensions 1
Overall Thickness
2
3
1 : Maximum weight of the glazing should not exceed
318 kg (700 lb). Certain conditions may apply.
Contact us for additional information.
2 : 12 mm outside laminated glass / 11.5 mm air space /
6 mm inside glass.
3 : 12 mm outside laminated glass / 11.5 mm air space /
6 mm center glass / 11.5 mm air space /
6 mm inside glass.
prelco.ca
PREL-SHADE
Thermochromic Glass
T HERMOCHROMIC G LASS
PRODUCT FUNCTION
Prel-Shade glass gradually changes color when it
is exposed to direct sunlight. Optimal temperature
ranges lie between 25°C to 65°C (glass surface
temperature). It requires about 20 to 30 minutes
exposure to direct sun before the glass reaches its
darkest color. In the absence of sunlight, the same
time would be required for the glass to return to its
original state.
DURABILITY
Accelerated aging tests carried out by an independent laboratory show that the Prel-Shade interlayer
will last 20 years.
94, Cartier boulevard, Rivière-du-Loup
Quebec Canada G5R 2M9
Phone : 418 862-2274 Fax : 418 862-8181
www.prelco.ca
[email protected]
Toll free : 1 800 463-1325 / 1 888 277-3526
PS10812
Prelco Inc. reserves the right to make any changes without prior notice. - Printed in Canada. - Graphic Design : etincelle.ca
PREL-SHADE