Evaluation of energy efficiency measures sustainability by decision tree method

Renovation of the existing buildings is straight way to perform the targets of the Energy Efficiency Directive. Qualitative renovation begins by choosing energy efficiency measures and evaluation and prioritization of them depends on the chosen criteria. In order to increase sustainability of the renovation the criteria for energy efficiency measures evaluation reflecting sustainable attitude should be chosen. In this paper the five main criteria (energy efficiency, environmental impact, economical rationality, comfort and duration under Life cycle point of view) are defined and analyzed. Sequential prioritization and distribution decision tree is formed for distribution of energy efficiency measures to the basic and additional energy efficiency measures. The presented method optimizes the formation of packets of energy efficiency measures. The case study with five energy efficiency measures show the optimization results, when only four packets are formed instead 131 possible variants. All packets formed according the distribution decision tree has higher values of general sustainability criteria and small distribution of values (difference only 12%). This systemization is convenient tool for decision maker, independently if decision maker is machine or person.