Evaluation model establishment of energy saving retrofitting for historic office buildings and case analysis in China

Based on the investigation and test data analysis of typical historic office buildings in Tianjin, summarizes their basic features, and presents the energy saving retrofitting technologies. Simulates and analyses the effect of several kinds of retrofitting technologies by DesignBuilder software. Considering the energy and environmental benefits, establishes an evaluation model of energy saving retrofitting based on the multiple objective decision making method. Analyses and compares the retrofitting technologies of windows, walls and roof, and ranks the comprehensive scores about these retrofitting technologies, which can be helpful to confirm the priorities of the retrofitting technologies.