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When the outdoor temperature gets lower and lower, the thermal insulation effect of windows becomes more and more obvious. For people living in high latitudes, the windows of houses have problems such as ventilation and lack of heat preservation, and those people are starting to wonder how should we choose windows with more heat preservation performance to change from cold winter to warm winter? 

How to make window frames and glass more insulated, Jinan LIJIANG Glass is here to teach you some tips to help you warm through the winter.

The heat preservation of insulating glass 1

Insulating glass, also known as sealed and heat-insulating glass, is an extremely ideal material that can meet the thermal insulation requirements of modern buildings. It consists of two or more pieces of glass separated by an aluminum frame or plastic strip filled with desiccant, and the periphery is sealed. Dry air or inert gas can be filled between the glass. The sealant or structural adhesive can be used to seal the edge of the glass. Insulating glass not only has the daylighting performance of single-layer glass but also has heat preservation, heat insulation, sound insulation, and anti-condensation properties. It also improves the living environment and achieves safety and beauty.

According to relevant investigations, the heat transfer coefficient of ordinary 12mm thick double-layer insulating glass is 3.59W/ (m·K), which can save energy costs by 20%-40%; triple-layer insulating glass, or filled with a special gas or heat-absorbing glass, Heat-reflective glass, etc. are made of hollow glass, which can save energy up to 30%~70%.When the design heating index is 0.7W/ (m·K), the daylighting area is 20%, and the 12(3+6+3) mm double-layer hollow glass is used instead of 3mm single-layer glass under the condition of the same enclosure structure. Save 22%-28% of heating energy consumption.

The construction of insulating glass 1

The construction of insulating glass 1

In standard buildings in Tokyo, Japan, when 18mm (3+12+3) ordinary double-layer hollow glass is used instead of 3mm ordinary transparent glass, the energy consumption of air conditioning can be reduced by 21%. For example, the hollow glass is composed of heat-absorbing or heat-reflecting glass. , The air conditioning energy consumption is reduced more significantly. For example, using 3mm blue heat-absorbing glass + 6mm air layer + 3mm ordinary transparent glass composed of double-layer hollow glass instead of 3mm ordinary transparent glass, the air conditioning energy consumption can be reduced by 31%.

Japanese glass curtain wall building in winter 1

Japanese glass curtain wall building in winter 1

The headquarters of Royal Canadian Group uses 650n heat-reflective double-layer insulating glass, which can reduce heat loss by 70% in winter compared with single-layer glass and reflect 45% of solar radiant heat in summer.

 Canadian glass curtain wall building in winter 1

 Canadian glass curtain wall building in winter 1

In northern regions such as Siberia, condensation on the doors and windows of buildings is always a big problem. The internal dew point of insulating glass is lower than -40℃. For example, if 4+A12+4 insulating glass is used, when the room temperature is 20℃, the relative humidity is 40℃. %, when the outdoor temperature is -25℃, there will be no condensation, while using 4mm single-layer glass, it will condense when the outdoor temperature is -5℃. The use of hollow glass can effectively reduce the condensation temperature.

 Russian glass curtain wall building in winter 1

 Russian glass curtain wall building in winter 1

In short, the cost of installing insulating glass is higher than that of installing single-layer glass. However, the application of insulating glass reduces building heating and air conditioning costs, achieving building energy saving, reducing indoor noise, and improving the indoor environment. The overall benefits are cost-effective.


 For more information about Jinan LIJIANG Glass insulating glass processing equipment and insulating glass processing accessories, please click here to learn more. 

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