1. Introductions for Double Skin Curtain Wall
The double ventilation curtain wall is applied widely
The double ventilation curtain wall appeared in Europe in the 1990s, and has been applied
gradually, which applied more widely especially in Germany. It plays a big role in increasing
the curtain wall insulation, heat insulation, sound insulation function. China is also designing
and constructing the double skin curtain wall.
Double skin facade classification
Double glazing curtain wall is mainly divided into inner and outer loop system, which has
similarities and differences. The common characteristic is form greenhouse effect between
the double glass, and exclude superheated air in greenhouse in summer outdoor, discharge
the solar thermal control into the room in winter, saving a lot of energy in the summer and
winter season.
The main features of the inner loop double skin curtain wall structure:
1. Its structural design can use steel portal frame thermal break or the unit thermal break
form;
2. Generally, the outer glass selects hollow steel, inner glass chooses monolithic steel.
3. Using coercive measures, electric control channel system to exclude most of the hot air in
bunk closed channel outdoor in summer daytime. In winter, spread the greenhouse effect
heat storage into the room through the pipeline loop system, to save energy. Its wind
between the inner and outer surfaces of the cavity thickness design is narrow, which is
generally within 120-200mm (individually about 400mm).
4. Need for additional sash channel for natural air into the interior room.
5. Ease of cleaning dust between the double glazing.
6. Use less material, so the cost is lower.
7. Need electronic drive ventilation, energy saving is lower than the outer loop structure.
The main features of outer loop double-layer glass curtain wall structure
1. The structural design can use the outer layer framework, the form of unit or point
connections; the inner frame thermal break or unit hollow glass thermal break form.
2. Generally the outer glass selects monolithic or laminated toughened, inner glass selects
hollow steel.
3. Use natural "Chimney" effect, exclude hot air from the greenhouse to the outdoors in
summer day, please note that the "chimney" effect in the different floors is different.
4. The cavity thickness of between the inner and outer layer design is thicker, making it easy

2. for the cavity personnel between inner and outer layers to enter the cleaning work;
5. Does not require additional special equipment for natural air into the window and inside the
house, the outer layer curtain wall design has air inlet and outlet; the inner curtain wall is
designed to open a door or window. Pay attention to prevent the entry of sand dust, channel
lower settings outside air into the exhaust port after the exchange of the air inlet of the cavity
and the upper hot air.
6. The dust between double glazing should be considered for easy cleaning
7. Use more materials, so the cost is higher.
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