Research on Energy Saving of the Existing Public Building in China

In this paper, in order to evaluate the economic performance of energy-saving retrofitting in existing buildings, we have researched the Chinese public building energy consumption structure. An existing public building was taken as an example in order to best evaluate the economic performance based on comparison between the annual electricity consumption before and after retrofitting, and also to analyze energy conservation of retrofitting. The results show that selecting the appropriate energy-saving technology can lead to a more satisfactory economic benefit in energy-saving commitments over the coming years.