Accredited Test and Research
Ublo Inc. with VS-A group conducts detailed
tests and researchs relating to UBLO’s thermal performance, water and air tightness,
wind pressure resistance, air ventilation and other relevant factors. Technical
R&D of UBLO is always in progress.
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The shield gasket with EPDM, which is
compressed when operable UBLO is closed, has been designed with an optimized
profile through trial and error. It can be easily opened and closed with a weak
force, and the latch parts of fixed Ublo and operable Ublo are tightly coupled due
to a constant elastic force. Which provides excellent airtight performance. UBLO
applied the KS F2292:2019 test method to obtain a confidential first grade
KOLAS result and confirmed that there was no infiltration at the highest 100Pa.
Fixed UBLO that faces the glazing is
designed with a delicate waterproofing and drainage system to prevent rainwater
to the interior. UBLO applied the KS F 2293:2008 test and received the highest
watertightness class 50 (Test pressure 500Pa).
The greatest heat loss in a building
envelope occurs in windows. As the carbon emissions reduction
target increases, the development of windows with improved thermal performance
is becoming more important. In particular, the metal frames of windows are
continuously thickening to maintain structural rigidity while adding the
thermal barrier to lower heat conduction.
UBLO can be operated without frames, and it
has excellent thermal performance as the part exposed to the outside does not
use metal which becomes a good heat conductor. Inside the UBLO, a translucent
high-performing insulation material, Aerogel, is placed or a double layer of
air is placed to increase thermal performance. Based on the KS F2278:2017 test
method, the heat transmission value, Uw = 1.476 W/m2K was obtained. It was
conducted with a 1.5mx1.5m window set with two UBLOs installed. With thermal
analysis simulation, this result was confirmed to be superior to the casement system
with the same window frame and glass.
IGU, perforated with 180 mm
is installed must be designed safe from strong winds outside. Structural
engineering determines the glass specifications according to the perforation
location and glass size.
Fixed UBLO is mounted with double sealed structures
on the engineered glass, and operable UBLO is firmly fixed with the latches of fixed
UBLO. To verify its safety, several computer simulations are preceded, and mock-up
tests were conducted at an accredited laboratory for performance certification.
The maximum pressure of 3600 Pa was tested on a 1.5mx1.5m window system by the
method presented by the client referring to KS F 2296:2019 test. UBLO window
set received the class 360, the highest level in this test.
Wind load resistance simulation in 3600Pa
Unlike in the past when buildings were not
airtight, architectures today have sealed envelopes. Building energy use
efficiency is higher as the carbon emissions reduction target increases,
but it is difficult to exchange internal/external air through infiltration.
UBLO is a natural ventilation system. When
the occupant determines that local ventilation is necessary, it is manually
opened and closed to inflow outside air into the room.
Natural ventilation is required to reliably
reduce the concentration of carbon dioxide and viruses, even in air
conditioners that circulate indoor air or in rooms with mechanical ventilation
where it is difficult to clean ducts and control the amount of external air.
The UBLO can be selected by the occupants considering the buoyant ventilation
of the height difference between the upper and lower openings. The CFD
simulation of optimal ventilation conditions according to UBLO 's location can
be checked in detail through the more link below. UBLO is the most reliable
natural ventilation method without energy consumption.