Analysis on Energy Saving of Large Scale Public Building Economy Taking Kaifeng City as an Example

Abstract

Today, in Chinese existing large public building energy conservation is facing severe challenges, but also has great potential. In this paper, taking Kaifeng city as an example to survey and analysis on energy consumption of large public buildings in China, and the proposed modification proposal for reference. According to the current trends, by 2020 China's annual energy consumption will reach 10.9 tons of standard coal, equivalent to about 29 430 billion kwh of electricity, it is more than 34 times the total annual power generation of Three Gorges power station. Among them, the existing large-scale public buildings consume 22% of the total energy consumption, has become the "black hole" and "giant", although their construction area of less than 4% of total urban construction. According to statistics, the total construction area of large public buildings in China existing is 5 billion m2 , power consumption is 70 to 300kwh/ m2 /year, excluding heating energy consumption equivalent to power 900 billion kwh/year. Moreover, in the China the development speed of large-scale public buildings is very fast, the annual increase is more than 50 million square meters, so the energy consumption of large public buildings will become a major growth point in the future energy consumption in many city. Therefore, in Chinese existing large public building energy conservation is facing severe challenges, but also has great potential. Kaifeng as a rapid rise of the Central Plains city, its current situation and characteristics of the energy consumption of large public buildings are regional representative strongly.