Comparison of Low-E Glass Selection Strategies in Different Climate Zones

2025-06-27 09:40:05

The selection of Low-E glass in different climate zones requires comprehensive consideration of insulation, shading, and energy-saving needs. The main strategies are compared as follows:

Severe cold regions (such as Northeast China)

Priority should be given to using high transparency dual silver/triple silver Low-E glass, with the film layer placed on the third side (indoor side) of the insulating glass to maximize the acquisition of winter sunlight heat energy. The recommended heat transfer coefficient K value is ≤ 1.5.

Sunshade coefficient Sc>0.6, balancing lighting and insulation.

Regions with hot summers and cold winters (such as Jiangsu, Zhejiang, and Shanghai)

Recommend sunshade type single silver Low-E glass, with the film layer placed on the second side (outdoor side), and the sunshade coefficient Sc controlled at 0.3-0.5 to balance winter and summer energy consumption.

The K value for the entire window should be 2.0-2.57.

Regions with hot summers and warm winters (such as South China)

Choose high reflection sunshade Low-E glass, with the film layer located on the second side, Sc＜0.3， Significantly reduce air conditioning load.

Online Low-E glass is more resistant to high temperatures and humidity.

Difference core: Northern region emphasizes insulation, Southern region emphasizes insulation, and the membrane surface position and Sc value need to be accurately matched with climate characteristics

Low-E glass

Type: Soft coat, hard Coat

Thickness: 4mm, 5mm, 6mm.

Size: 1830x2440mm,2140×3300/3660mm etc.

Color: Clear, blue, green.

More product details:https://www.longboglass.com/product/9.html