Energy Saving IGUTo achieve an energy saving effect one must reduce the heat transmission through the material. This can be done by:
- Changing the air space between the two glass sheets in the IGU.
- use inertial gas (argon, crypton, etc.)
- Use of Low-E glass with soft and hard coating.
|4 float - 16 - 4 Low-E soft coating||79||13||21||19||25||64||1.3||1.1||29||15|
|4 float - 16 - 4 Low-E hard coating (KA)||72||16||35||16||16||72||1.8||1.6||29||15|
|5 float - 16 - 4 Low-E soft coating||78||13||21||21||24||63||1.3||1.1||30||20|
|5 float - 16 - 4 Low-E hard coating (KA)||74||17||33||25||16||71||1.7||1.5||30||20|
|6 float - 16 - 4 Low-E soft coating||78||13||20||23||23||62||1.3||1.1||31||25|
|6 float - 16 - 4 Low-E hard coating (KA)||73||17||32||26||16||70||1.7||1.5||31||25|
- Extremely low coefficient of heat transmission U with Low-E (low emittance) glass with soft coating, high energy saving properties and lower heating costs in the winter.
- High LT (Light transmission) and SF (Solar factor) and thus enough natural light in the winter season.
- Low SF (solar factor) in comparison to the conventional glazing and thus less heat transmission in the summer season. This effect is most noticable when glazing on the northen side, due to the low direct shortwave radiation.