Basic theoretical research on evaluation system of building energy saving

A brief introduction on building energy consumption, building energy saving methods, laws and guidance on building energy saving, evaluation system on energy saving, up to nowadays, are presented in this paper. Some new concepts such as building energy flow, building mass flow, couple recovering of building discharge energy, integrated system of building energy, factor of building energy integration I, effect factor on atmospheric environment of building energy F, etc. are presented, and further improving ways are suggested. Positive effect of these new concepts and new methods on tradition approaches are predicted.