Factors affect insulated glass performance

Factors affect insulated glass performance

Factors affect insulated glass performance
1. The spacer thickness: mainly by controlling the thickness to avoid the formation of turbulent airflow inside the insulated glass, the cold and hot airflow of the control gas interfere with each other, or control the airflow of the rising and falling air to interfere with each other to control the flow of the heat convection.
2.Gas type and humidity inside insulated glass: The inert gas filled in the interior of the insulated glass can reduce the heat insulation and sound
insulation of the insulated glass. For example,filled argon gas and sulfur fluoride can improve the heat insulation and sound insulation performance; the moisture content inside the glass will cause internal condensation or even water, which will affect the aesthetic effect of the insulated glass, and will increase the conduction heat transfer coefficient of the insulated glass and reduce the heat insulation effect.
3. Edge sealing: On the one hand, if the edge of the insulated glass is not well sealed, the proportion of water vapor entering the interior of the insulated glass through the sealing layer will increase, and the speed of failure of the insulated glass will also increase. Any product, no matter how good its initial performance, however, its life is very short, such a product can not be said to be a good product; on the other hand, if the edge material of the insulated glass has good thermal conductivity, then pass The heat transfer of the sealant connected to the glass at the edge of the insulated glass is relatively
large, and the heat coefficient of the insulated glass is improved, and the heat insulating performance is decreased.
4. Thermal Transmittance of Glass: In the above analysis, we can understand that convection and conduction heat transfer through insulated glass can
be basically controlled by reasonable space layer design and construction. The heat transfer of the insulated glass is mainly carried out by means of radiation heat transfer. If clear glass with high transmittance and low reflectivity is used, the insulating performance of the insulated glass is higher than that of the coated glass with high reflection and low transmittance or Low- E glass is much lower.
5. Glass size: Increasing the area of the insulated glass can reduce the heat loss per unit area of ​​the insulated glass and improve the overall heat insulation effect of the insulated glass.

Factors affect insulated glass performance

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