What is the advantage of warm edge spacer?
The main function of the insulating glass warm edge spacer is to prevent condensation on the edge of the glass and reduce the heat loss of the edge of the glass. The heat transfer coefficient K value of insulating glass only represents the performance of the central area of the glass, without considering the influence of the edge of the glass.
In fact, the edge is connected to the glass by the spacer frame and the sealant, and the heat is mainly conducted through solids. The K value of this part is obviously higher than that of the central area, the heat loss of the edge of the glass will increase in actual use, and the temperature of the edge of the indoor glass will be too low to cause condensation in winter.
The warm edge spacer is designed to solve these problems. The commonly used aluminum spacer has high thermal conductivity [about 160W/(m K)], and the warm edge spacer is made of stainless steel with low thermal conductivity [about 17W/(m K)]. K)] or even lower thermal conductivity polypropylene [about 0.22W/(m.K)] combination, or a combination of butyl sealant, desiccant and support material.
The picture below is a commonly used stainless steel polypropylene composite warm edge spacer, which has a certain rigid support strength, so it is not only suitable for the manufacture of insulating glass for doors and windows, but also for the manufacture of insulating glass for curtain walls.
The flexible warm edge spacer made only of butyl sealant and desiccant is only suitable for the manufacture of insulating glass for doors and windows due to the poor rigid support strength, and cannot be used for curtain wall insulating glass.
Using the insulating glass with warm edge spacers, the temperature of the edge of the indoor glass can be increased by about 3 °C in winter, the effect of preventing condensation is very obvious, and the K value of the whole window is reduced by about 0.1 [W/m2·K)].