Building Energy-saving Technology and Its Application Based on Low Carbon Concept

With the continuous development of social economy, of residents'living consumption structure upgrade, building energy consumption quantity huge, the increasing focus on research and application of building energy-saving technology. Based on low carbon concept, this paper expounds the necessity of building energy-saving, introducing building envelopes structure energy-saving technology, HVAC systems energy saving technology and new energy utilization technology, analyses the application of building energy-saving about the "Bird's Nest" and the "Water Cube", draw the urgency and the reality of building energy saving technology promotion and application.