THERMOBELT Ultra ®
Low-E Insulating Glass
ow, the energy-efficiency and the high aesthetics go hand-in-hand. Create bright, energy-efficient, comfy rooms for living and working, 24/7 all year around with Yalodomi’s THERMOBELT Ultra®. The “secret” of IG product lies in a virtually transparent coating, that allows it to be a net contributor of energy in buildings. Low-E stands for low emissivity, referring to the heat reflective property of the glass. With THERMOBELT Ultra®, one can reduce heat loss through the windows, while allowing great amount of light to enter the building. Low-E technology is applied to both double and triple-glazed windows. More precisely, Low-E has the following characteristics:
- excellent insulation values (Ug values)
- unparalleled light transmission
- advanced color neutrality (Ra value)
Energy Saving
The energy-efficiency is not anymore just a synonym for environmental friendliness, but also a huge source of cost-savings. With oil and gas prices rising quite frequently, heating cost has become rather exorbitant. It is true that sustainable heating methods, such as Low-E insulating glass, may seem pricey, but in the long-run, they prove to be more cost-effective. Getting the right type of glass is critical, since many buildings use redundant energy and therefore, there are more CO2 emissions than needed to keep people comfortably warm. Low-E glass technology, if massively used, can help to reduce CO2 emissions in the near future. Investing in Yalodomi’s energy-saving glass you get your money back, since the introduction of the energy Performance Certificate for buildings. There is also a wide range of state funding programs for improving the energy performance of both new and existing buildings. Using insulating glass from Yalodomi’s THERMOBELT Ultra® series, you can achieve maximum thermal insulation while using solar energy.
Quality of insulating glass
Yalodomi’s THERMOBELT Ultra® series insulating glass types are made of high grade tested materials. The edge connection provides optimum protection from the high strains to which an insulating glass unit is exposed, during its long product life. The quality of the final product is ensured by external quality control from a certified body and is continuously documented, according to EN 1279-6. Additionally, Yalodomi performs internal quality control tests several times a year.
Advantages
- Thanks to the higher surface temperature in the edge area of the inside pane (warm edge) valuable heat remains in the room.
- Better values of the heat transfer coefficient of the window (Uw-value)
- Lower heating energy losses
Most frequently Asked Questions
Q: Why MIGHT my new energy saving glass mist -up fr om the outside?
A: Outside condensate frequently forms on glass, during high humidity nights. The better the thermal insulation of the insulating glass, the more likely the formation of outside condensate. This is an indicator of the high quality of your windows. Due to the excellent insulation value, glazing’s heat transmittance is very low. That means that heat stays inside the room and hardly any of it passes to the outside. The outer pane therefore has a lower surface temperature than the outside air. With the corresponding high relative humidity in the outer air, the dew point on the glass pane is not reached and so condensate forms on the pane surface.
Q: Do I have to ventilate frequently?
A: If you install new windows you improve the air tightness of the room. That saves energy and heating costs. However, the moisture that builds up, no longer escapes to the outside through the new windows. So regular airing is needed after renovation.
TECHNICAL SPECIFICATIONS
Thermally optimized spacers, made of stainless steel and plastic composites, ensure markedly better insulation at the glass edge and hence, an improved room climate. They reduce the heat losses in the glass edge area, preventing the accumulation of condensate.
Near windows, the feeling of comfort in the room increases thanks to THERMOBELT Ultra®. That’s because a higher surface temperature is achieved in the inner window pane when compared to conventional type of glazing. As a result, the perception of cold air near windows is considerably reduced.
REFURBISHMENT – ENERGY SAVING
The heating energy required in existing buildings is three to four times higher than in new buildings, since the overall insulation was not efficient. Various funding programs like “Energy Saving in house”, keep low cost in addition to the saved energy costs. Using low g-value ensures outstanding solar heat gains, even in sunny winter weather. Overall, the solar gain is higher on the southern, eastern, western faces than the loss of heat via the glazing.
THERMOBELT Ultra® stands for:
- Excellent thermal insulation values (Ug-values)
- Energy saving and heating cost reduction
- High energy efficiency buildings
- Excellent light transmission · Excellent color neutrality Ra
- CO2 reduction
- Optional design with thermally optimized edge connection and hence, even lower Uw-value of the window
Thermally optimized (Warm-Edge) connection systems
The use of thermo-spacers leads to an additional energy saving rate
TERMINOLOGY
The heat transfer coefficient (Ug– value) The total thermal insulation of a window depends on the thermal insulation of the frame, the thermal insulation of the glazing and the thermal break spacers and is given by the coefficient Uw. The thermal insulation of the glazing alone is given by the coefficient Ug. This is the degree of heat loss (in watts), through a surface area of 1m2, for a heat difference of one degree Kelvin between inside and outside.
The total energy transmittance (g-value) is a quantity that can only be usefully obtained when the glass is the building material. It indicates the percentage of the solar energy that passes through the glass into the interior, including the secondary heat radiation which the glazing emits to the interior, as a result of absorbed solar energy.
The equivalent heat transfer coefficient (Ug-eq) indicates the heat quantity gained or lost through the glass on a yearly average Ug-eq= Ug-S x g (S-factor=direction).
The light transmittance (Tv) is the percentage of visible light passing through a glass relative to the brightness sensitivity of the human eye.
ΗΑΝΑΚΛΑΣΗ ΤΟΥ ΦΩΤΟΣ (Rv)δείχνει το ποσοστό του ορατού φωτός που ανακλάται από την επιφάνεια του υαλοπίνακα.
The Psi-value (ψ) can be illustrated with the length-related heat transfer coefficient describing the thermal bridge of a component. In the window, it describes the heat transfer at the glass edge, mainly from the interaction of the window frame, the insulating glass and the spacer. The psi-value indicates the amount of heat (W/m2K) passing per unit of time through 1m of a component connection at a temperature difference of 1K between the adjacent room and the outside air.
