Application and Performance Evaluation of Key Technologies in Green Buildings

To ensure the high-quality development of green buildings, a lot of attention has been paid to the post-evaluation of the actual operational performance of green buildings. Post-evaluation is a method to evaluate the effect of green buildings after putting them into use. It objectively expresses the actual implementation of green technologies, reflects occupants’ experience, and scientifically guides the project operation through questionnaires, field visits, data analysis, etc. Since most post-evaluation studies only focus on the overall performance of green buildings, this study carried out a systematic post-evaluation of six typical technologies of green buildings based on more than 50 green cases in China. The overall performance of green buildings mainly considers the energy performance and building satisfaction. The six typical technologies include cold source systems, air conditioning terminal systems, energy-saving lighting technology, air heat recovery, the natural lighting technique, and roof greening technologies. The application form and frequency of each technology are studied by investigation, and the actual effect of each technology is evaluated by practical tests and questionnaires. The results show that although the overall performance of case green buildings, including the energy efficiency and staff satisfaction, can basically meet the standard requirements, the application effect of energy-saving and environmental protection technology is difficult to meet the expectations. The overall performance of green buildings can be further improved by improving the application effect of individual energy-saving and environmental protection technologies.