Double-Skin Facade (DSF)

Definition: A double-skin facade (DSF), also known as a breathing facade, is an advanced building envelope system composed of inner and outer curtain wall layers. It represents the most technologically advanced and high-performance curtain wall system available today. Compared to traditional curtain wall systems, it offers superior physical properties. It can be specifically and strategically designed according to architectural requirements to optimize the overall performance of the building envelope.

Components of the Energy-Efficient Double-Skin Facade:

1. Inner and outer curtain wall layers.

2. Louvered blinds.

3. Plate ventilation units (including air filters, bird protection nets, etc.).

4. Standard ventilation units for the inner layer.

Feature Description:

• System Construction: The system features a unitized structure. The outer layer is a combination of point-supported ultra-clear glass and adjustable louvers. The inner layer consists of thermally broken insulation windows. Electrically controlled light-regulating blinds are positioned within the intermediate cavity. The opening and closing of the outer louvers enable the entire facade to "breathe" and facilitate air exchange.

• Thermal Insulation Performance: It provides excellent thermal insulation, with an average heat transfer coefficient (K-value) as low as 1.15 W/m²K. The average annual energy saving reaches 30%.

• Acoustic Insulation Performance: It offers outstanding sound insulation, with a weighted sound reduction index (Rw) exceeding 42 dB.

• Hybrid Ventilation: The ventilation rate is adjustable autonomously, independent of the building's central HVAC system, allowing for greater flexibility in design and construction.