In recent years, with increasing demands of improving public indoor environment for living in a more comfortable manner, a large number of mechanical equipment are applied to public buildings, making public buildings be major energy consumers in civil buildings. Passive technology is an effective way to design buildings of energy saving strategies. Therefore, this paper summarizes the overall energy consumption of public buildings in Shenzhen by collecting and analyzing statistical data through Shenzhen Statistical Yearbook over the years. Besides, using Ecotect’s sub-software “Weather tool” to analyze the local meteorological environment. Through the analysis of the psychrometric chart to get the different energy-saving potential used the specific six passive design strategies, the results have shown that the best combination of passive design strategies suitable for climate conditions are natural ventilation, passive solar heating, and thermal heating. Finally, these three passive design strategies are further analyzed and discussed to obtain the feasible schemes, which could provide constructive suggestions for passive energy-saving design of public buildings in Shenzhen.

Passive design of green buildings has three benefits: economy, ecology and society. At present, there is no authoritative definition of social benefits at home and abroad, so it is very difficult to evaluate and measure. Based on Maslow’s hierarchy of needs, economic and sociological theories, 5 first-level indicators and 20 second-level indicators of social benefit evaluation system for passive design of green buildings are obtained. In addition, the structural equation model was built by “AMOS” to analyze and compare these influencing factors. The research results showed that: Among the five latent variables, Environmental Effect is the most significant, followed by Sustainability, Economic Development Potential, Overall Measurement and People Oriented. And there is a significant positive impact between the latent variables. Among the secondary indicators, “Urban environment”, “Enterprise investment environment”, “Ecological environment policy”, “Industrial scale and openness” and “Thermal comfort” are the main influencing indicators. Finally, some suggestions were put forward to provide reference for the evaluation of social benefit of related projects in the future.

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