Checking and evaluation system on energy efficiency reformation of existing residential buildings based on LCA

Presents the target of energy efficiency reformation for existing residential buildings in Northern China and the importance of checking and evaluating on the target. Points out the necessity of building up an evaluation system for the energy efficiency reformation. According to the evaluation procedure of life cycle assessment (LCA), establishes the three grade evaluation system for heat metering and energy efficiency reformation of existing residential buildings in heating areas of Northern China. Also, based on the multiindex comprehensive evaluation method combined with the analytical hierarchy process (AHP) and successful degree evaluation method, establishes a mathematical model for the evaluation system and provides a set of scientific method for evaluating energy efficiency reformation projects systematically, scientifically, comprehensively and objectively.