LOW-E GLASS

About This Project

The large glass area in architectural design becomes popular, and Low-E glass is widely used for energy efficiency consideration. SGC Low-E glass produced by top quality glass manufacturers is outstanding in energy efficiency and in aesthetics with various colors, thus being the primary choice in architectural design. According to the structure of Low-E coating, Low-E glass may be classified as Single Silver Low-E glass, Double Silver Low-E glass and Triple Silver Low-E Glass.

Single Silver Low-E Glass

Within the coating structure of single silver Low-E glass, there is one silver layer. Single Silver Low-E glass has been widely used in various buildings at different locations worldwide.

Features

Visible light transmittance— adequate indoor natural daylighting.

Solar energy transmittance — a wide range of shading coefficient SC available, for different geological locations.

High far infrared reflectance — low U-value, reduced thermal transfer due to temperature difference.

Double Silver Low-E Glass

Within the coating structure of double silver Low-E glass, there are two silver layers. While maintaining the same visible light transmittance, it has lower shading coefficient, SC, than single               silver Low-E glass. In other words, it filters the sunshine as a cool lighting source to a larger extent and provides a solution to energy efficiency in design of high transparency architectures.

Features
Higher visible light transmittance — ensuring better natural lighting
Extremely low solar heat transmittance — effectively impeding solar heat radiation.

The differences among various types of glass is reflected in their spectral data as shown in the following figure.

Triple Silver Low-E Glass

Within the coating structure of triple silver Low-E glass, there are three silver layers. As a result, triple silver Low-E glass performs better against solar heat than double silver Low-E glass                  and is currently the best silver based Low-E glass in terms of high visible light transmission and energy efficiency. Triple silver Low-E glass is suited for high transparency buildings with                    special solar shading requirement.

Bendable and Post-Temperable Low-E Glass

Ordinary Low-E glass cannot be bent and post-tempered after coating which limits larger scale application of Low-E glass and promotion of energy efficient buildings. The bendable and post            temperable low-e glass is made by selected coating  materials which can be bent and post-tempered after coating to meet the need of curved Low-E glass in current architectural design.

Features
Can be bent and post-tempered after coating.
Has optical properties and energy efficiency as ordinary Low-E glass.

Specifications

Dimensions of standard sheet (mm): 2440×3660, 2400×3300, 2100×3300
Maximum dimension(mm): 3300×6000
Minimum dimension(mm): 300 x 800
Thickness(mm): 3, 4, 5, 6, 8, 10, 12, 15, 19
The other thicknesses and sizes may be available upon request.

• Quality
  Conforming to ASTM standard.
• Notes for use
  Acoustic and thermal insulation:
  Filling argon (Ar) in the Cavity of insulating glass may further lower the U-value, and raise the sound reduction index, Rw. Detailed data is available from SGC Los Angeles  Office.

Prevention of thermal breakage :
When products with solar energy absorbance approaching to or above 70% are selected, it is recommended that the products be tempered or heat-strengthened to prevent breaking due to thermal stress.

Selection of color:
The colors listed in the performance data table are outdoor natural reflective colors. When the background color changes, the observed reflective color may also change accordingly, therefore, the products should be observed at different locations from different angles for color selection.