1. To be familiar with the concept, significance of the respiration, respiratory process (external respiration, gas transport and internal respiration).

2. The results show that the external respiration double skin facade has a superior energy efficiency potential and is one of the ecological building envelops.

3. External respiration is the exchange of oxygen and carbon dioxide in the lungs.

4. Since the 1830s, various inventors, even Alexander Graham Bell, had tinkered with devising some kind of external respiration.

5. The breathing of human being is one form of respiration, called external respiration.

6. Compares the heating and cooling energy consumption of buildings applying external respiration double skin facade with that of buildings applying four single glazing curtain walls.

7. The breathing of human beings is one form of respiration, called external respiration.

8. Simulates and analyses the velocity and temperature fields inside the external respiration double skin facade of a building.