Comprehensive evaluation of a multi-energy complementary system

The multi-energy complementary system has the advantages of being clean, low-carbon, safe, and efficient. However, the standardized evaluation system has not yet been formed, and it is easy to have the problem of unclear construction goals. Therefore, a new comprehensive evaluation system that includes economic benefits, energy efficiency, environmental benefits, technical benefits, and social benefits was proposed. In the evaluation process, the analytic hierarchy process was used to determine the weight of each indicator, and the fuzzy comprehensive evaluation method was utilized to evaluate and analyze the indicators. In addition, the multi-energy complementary system of the Nanjing building complex was taken as an example for model verification. The results showed that compared with the primary system, the optimized system had great advantages in terms of economy, energy efficiency, and social impact. The fuzzy evaluation results of the primary system and the optimized system were 0.69 and 0.75, respectively. The comprehensive evaluation of the optimized system was better.