Analysis of Energy Saving Potential of a Low-Energy Building in China

The objective of this study is to set up a road map for Chinese low-energy buildings with regards to technology solutions and economic perspectives. By simulation and calculation, different energy-efficient solutions were developed for a typical two floors villa in Chinese hot summer and cold winter zone. The energy-saving strategy adopted in this study can be summarized as: reducing demand; using high-efficient HVAC system; better control strategy; using renewable energy. By the careful design of building envelope, HVAC system and control strategy, the yearly energy consumption can be reduced by 90 % compared with the baseline of energy consumption in agreement with current Chinese building code. Proper use of renewable energy can be very helpful to achieve the final goal of low-energy building.